3D Systems, 2021, 3D Printers, Software, Manufacturing & Digital Healthcare, https://www.3dsystems.com (accessed 13 August 2021)

Abdelrahman, M., E.W. Reutzel, A.R. Nassar, and T.L. Starr, 2017, “Flaw Detection in Powder Bed Fusion using Optical Imaging,” Addit. Manuf., Vol. 15, pp. 1–11, https://doi.org/10.1016/j.addma.2017.02.001

Ahsan, F., and L. Ladani, 2020, “Temperature Profile, Bead Geometry, and Elemental Evaporation in Laser Powder Bed Fusion Additive Manufacturing Process,” JOM, Vol. 72, pp. 429–439, https://doi.org/10.1007/s11837-019-03872-3

Aldrin, J.C., and E.A. Lindgren, 2018, “The Need and Approach for Characterization-U.S. Air Force Perspectives on Materials State Awareness,” AIP Conference Proceedings, Vol. 1949, https://doi.org/10.1063/1.5031501

All3DP, 2021, 3D Printed Iron Man Suit: The Most Incredible Projects | All3DP, https://all3dp.com/2/3d-printed-iron-man-suit

AlMangour, B., D. Grzesiak, and J.-M. Yang, 2017, “Selective Laser Melting of TiB2/H13 Steel Nanocomposites: Influence of Hot Isostatic Pressing Post-Treatment,” J. Mater. Process. Technol., Vol. 244, pp. 344–353, https://doi.org/10.1016/j.jmatprotec.2017.01.019

Baker, R., 1920, Method of Making Decorative Articles, US Patent 1,533,300, filed 12 November 1920, and issued 14 April 1925

Balla, V.K., P.D. DeVasConCellos, W. Xue, S. Bose, and A. Bandyopadhyay, 2009, “Fabrication of Compositionally and Structurally Graded Ti-TiO2 Structures Using Laser Engineered Net Shaping (LENS),” Acta Biomater., Vol. 5, No. 5, pp. 1831–1837, https://doi.org/10.1016/j.actbio.2009.01.011

Bandyopadhyay, A., and B. Heer, 2018, “Additive Manufacturing of Multi-Material Structures,” Mater. Sci. Eng.: R: Reports, Vol. 129, pp. 1–16, https://doi.org/10.1016/j.mser.2018.04.001

Batista, M., V. Furlanetto, and S.D. Brandi, 2020, “Development of a Resistance Spot Welding Process Using Additive Manufacturing,” Metals (Basel), Vol. 10, pp. 1–12, https://doi.org/10.3390/met10050555

Bayat, M., A. Thanki, S. Mohanty, A. Witvrouw, S. Yang, J. Thorborg, N.S. Tiedje, and J.H. Hattel, 2019, “Keyhole-Induced Porosities in Laser-Based Powder Bed Fusion (L-PBF) of Ti6Al4V: High-Fidelity Modelling and Experimental Validation,” Addit. Manuf., Vol. 30, https://doi.org/10.1016/j.addma.2019.100835

Bermingham, M.J., D. Kent, H. Zhan, D.H. Stjohn, and M.S. Dargusch, 2015, “Controlling the Microstructure and Properties of Wire Arc Additive Manufactured Ti-6Al-4V with Trace Boron Additions,” Acta Mater., Vol. 91, pp. 289–303, https://doi.org/10.1016/j.actamat.2015.03.035

Bi, G., C.-N. Sun, H.-C. Chen, F.L. Ng, and C.C.K. Ma, 2014, “Microstructure and Tensile Properties of Superalloy IN100 Fabricated by Micro-laser Aided Additive Manufacturing,” Mater. & Des., Vol. 60, pp. 401–408, https://doi.org/10.1016/j.matdes.2014.04.020

Blank, M., P. Nair, and T. Pöschel, 2019, “Capillary Viscous Flow and Melting Dynamics: Coupled Simulations for Additive Manufacturing Applications,” Int. J. Heat Mass Transf., Vol. 131, pp. 1232–1246, https://doi.org/10.1016/j.ijheatmasstransfer.2018.11.154

Boettinger, W.J., S.R. Coriell, A.L. Greer, A. Karma, W. Kurz, M. Rappaz, and R. Trivedi, 2000, “Solidification Microstructures: Recent Developments, Future Directions,” Acta Mater., Vol. 48, pp. 43–70, https://doi.org/10.1016/S1359-6454(99)00287-6

Brandl, E., A. Schoberth, and C. Leyens, 2012, “Morphology, Microstructure, and Hardness of Titanium (Ti-6Al-4V) Blocks Deposited by Wire-Feed Additive Layer Manufacturing (ALM),” Mater. Sci. Eng. A., Vol. 532, pp. 295–307, https://doi.org/10.1016/j.msea.2011.10.095

Brice, C.A., and W.H. Hofmeister, 2013, “Determination of Bulk Residual Stresses in Electron Beam Additive-Manufactured Aluminum,” Metall. Mater. Trans. A, Vol. 44, pp. 5147–5153, https://doi.org/10.1007/s11661-013-1847-z

Brown, C.O., E.M. Breinan, and B.H. Kear, 1979, Method for Fabricating Articles by Sequential Layer Deposition, US Patent 4,323,756, filed 29 October 1979, and issued 6 April 1982

Buynak, C.F., J. Blackshire, E.A. Lindgren, and K.V. Jata, 2008, “Challenges and Opportunities in NDE, ISHM and Material State Awareness for Aircraft Structures: US Air Force Perspective,” AIP Conference Proceedings, Vol. 975, https://doi.org/10.1063/1.2902653

Calta, N., 2019, Final Technical Report Project Title: In-situ Data Acquisition and Tool Development for Additive Manufacturing Metal Powder Systems, pp. 925–423

Calta, N., P. Collins, A. Martin, M. Matthews, J.N. Weker, R. Ott, K. Stone, and C. Tassone, 2019, “In-situ Data Acquisition and Tool Development for Additive Manufacturing Metal Powder Systems,” Technical Report, SLAC National Accelerator Lab and Lawrence Livermore National Lab, https://doi.org/10.2172/1505627

Carroll, B.E., T.A. Palmer, and A.M. Beese, 2015, “Anisotropic Tensile Behavior of Ti-6Al-4V Components Fabricated with Directed Energy Deposition Additive Manufacturing,” Acta Materialia, Vol. 87, pp. 309–320, https://doi.org/10.1016/j.actamat.2014.12.054

Chalmers, B., 1964, Principles of Solidification, Wiley, New York, NY

Chlebus, E., B. Ku′znicka, R. Dziedzic, and T. Kurzynowski, 2015, “Titanium Alloyed with Rhenium by Selective Laser Melting,” Mater. Sci. Eng.: A, Vol. 620, pp. 155–163, https://doi.org/10.1016/j.msea.2014.10.021

Collins, P.C., 2004, “A Combinatorial Approach to the Development of Composition-Microstructure-Property Relationships in Titanium Alloys Using Directed Laser Deposition,” PhD thesis, Ohio State University, Columbus, OH, Publication No. AAI3144861

Collins, P.C., C. V. Haden, I. Ghamarian, B.J. Hayes, T. Ales, G. Penso, V. Dixit, and G. Harlow, 2014, “Progress toward an Integration of Process-Structure-Property-Performance Models for ‘Three-Dimensional (3-D) Printing’ of Titanium Alloys,” JOM, Vol. 66, pp. 1299–1309, https://doi.org/10.1007/s11837-014-1007-y

Collins, P.C., D.A. Brice, P. Samimi, I. Ghamarian, and H.L. Fraser, 2016, “Microstructural Control of Additively Manufactured Metallic Materials,” Annu. Rev. Mater. Res., Vol. 46, pp. 63–91, https://doi.org/10.1146/annurev-matsci-070115-031816

Cottam, R., J. Wang, and V. Luzin, 2014, “Characterization of Microstructure and Residual Stress in a 3D H13 Tool Steel Component Produced by Additive Manufacturing,” J. Mater. Res., Vol. 29, pp. 1978–1986, https://doi.org/10.1557/jmr.2014.190

Cunningham, R., C. Zhao, N. Parab, C. Kantzos, J. Pauza, K. Fezzaa, T. Sun, and A.D. Rollett, 2019, “Keyhole Threshold and Morphology in Laser Melting Revealed by Ultrahigh-Speed X-ray Imaging,” Science, Vol. 363, No. 6429, pp. 849–852, https://doi.org/10.1126/science.aav4687

Daehn, G.S., and A. Taub, 2018, “Metamorphic Manufacturing: The Third Wave in Digital Manufacturing,” Manuf. Lett., Vol. 15, pp. 86–88, https://doi.org/10.1016/j.mfglet.2018.02.014

Davis, J.E., N.W. Klingbeil, and S. Bontha, 2009, “Effect of Free-Edges on Melt Pool Geometry and Solidification Microstructure in Beam-Based Fabrication of Thin-Wall Structures,” 20th Annual Int. Solid Free. Fabr. Symp. (SFF 2009), pp. 320–331

DeMott, R., N. Haghdadi, X. Liao, S.P. Ringer, and S. Primig, 2021, “3D Characterization of Microstructural Evolution and Variant Selection in Additively Manufactured Ti-6Al-4 V,” J. Mater. Sci., Vol. 56, pp. 14763–14782, https://doi.org/10.1007/s10853-021-06216-2

Denlinger, E.R., J. Irwin, and P. Michaleris, 2014, “Thermomechanical Modeling of Additive Manufacturing Large Parts,” J. Manuf. Sci. Eng., Vol. 136, pp. 1–8, https://doi.org/10.1115/1.4028669

Denlinger, E.R., J.C. Heigel, P. Michaleris, and T.A. Palmer, 2015, “Effect of Inter-Layer Dwell Time on Distortion and Residual Stress in Additive Manufacturing of Titanium and Nickel Alloys,” J. Mater. Process. Technol., Vol. 215, pp. 123–131, https://doi.org/10.1016/j.jmatprotec.2014.07.030

Dinda, G.P., A.K. Dasgupta, and J. Mazumder, 2012, “Texture Control during Laser Deposition of Nickel-based Superalloy,” Scr. Mater., Vol. 67, pp. 503–506, https://doi.org/10.1016/j.scriptamat.2012.06.014

du Plessis, A., S.G. le Roux, J. Els, G. Booysen, and D.C. Blaine, 2015, “Application of microCT to the Non-destructive Testing of an Additive Manufactured Titanium Component,” Case Studies in Nondestruct. Test. and Eval., Vol. 4, pp. 1–7, https://doi.org/10.1016/j.csndt.2015.09.001

Du, W., Q. Bai, Y. Wang, and B. Zhang, 2018, “Eddy Current Detection of Subsurface Defects for Additive/Subtractive Hybrid Manufacturing,” Int. J. Adv. Manuf. Technol., Vol. 95, pp. 3185–3195, https://doi.org/10.1007/s00170-017-1354-2

Ehlers, H., M. Pelkner, and R. Thewes, 2020, “Heterodyne Eddy Current Testing Using Magnetoresistive Sensors for Additive Manufacturing Purposes,” IEEE Sensors Journal, Vol. 20, No. 11, pp. 5793–5800, https://doi.org/10.1109/JSEN.2020.2973547

Ferry, M., 2006, Direct Strip Casting of Metals and Alloys: Processing, Microstructure and Properties, Woodhead, Cambridge, UK

Feucht, T., J. Lange, B. Waldschmitt, A.-K. Schudlich, M. Klein, and M. Oechsner, 2020, “Welding Process for the Additive Manufacturing of Cantilevered Components with the WAAM,” Advanced Joining Processes, pp. 67–78, https://doi.org/10.1007/978-981-15-2957-3_5

Gan, Z., G. Yu, X. He, and S. Li, 2017, “Surface-Active Element Transport and Its Effect on Liquid Metal Flow in Laser-Assisted Additive Manufacturing,” Int. Commun. Heat Mass Transf., Vol. 86, pp. 206–214, https://doi.org/10.1016/j.icheatmasstransfer.2017.06.007

Gardan, N., and A. Schneider, 2015, “Topological Optimization of Internal Patterns and Support in Additive Manufacturing,” J. Manuf. Syst., Vol. 37, Part 1, pp. 417–425, https://doi.org/10.1016/j.jmsy.2014.07.003

Gobert, C., E.W. Reutzel, J. Petrich, A.R. Nassar, and S. Phoha, 2018, “Application of Supervised Machine Learning for Defect Detection during Metallic Powder Bed Fusion Additive Manufacturing using High Resolution Imaging,” Addit. Manuf., Vol. 21, pp. 517–528, https://doi.org/10.1016/j.addma.2018.04.005

Good, A., and E. Landau, 2017, “’Space Fabric’ Links Fashion and Engineering,” Jet Propulsion Laboratory, https://www.jpl.nasa.gov/news/space-fabric-links-fashion-and-engineering

Griffiths, R.J., D. Garcia, J. Song, V.K. Vasudevan, M.A. Steiner, W. Cai, and H.Z. Yu, 2021, “Solid-State Additive Manufacturing of Aluminum and Copper using Additive Friction Stir Deposition: Process-Microstructure Linkages,” Materialia, Vol. 15, https://doi.org/https://doi.org/10.1016/j.mtla.2020.100967

Griffiths, R.J., M.E.J. Perry, J.M. Sietins, Y. Zhu, N. Hardwick, C.D. Cox, H.A. Rauch, and H.Z. Yu, 2019, “A Perspective on Solid-State Additive Manufacturing of Aluminum Matrix Composites Using MELD,” J. Mater. Eng. Perform., Vol. 28, pp. 648–656, https://doi.org/10.1007/s11665-018-3649-3

Gunenthiram, V., P. Peyre, M. Schneider, M. Dal, F. Coste, I. Koutiri, and R. Fabbro, 2018, “Experimental Analysis of Spatter Generation and Melt-Pool Behavior During the Powder Bed Laser Beam Melting Process,” J. Mater. Process. Technol., Vol. 251, pp. 376–386, https://doi.org/10.1016/j.jmatprotec.2017.08.012

Gutowski, T., S. Jiang, D. Cooper, G. Corman, M. Hausmann, J.A. Manson, T. Schudeleit, K. Wegener, M. Sabelle, J. Ramos-Grez, and D.P. Sekulic, 2017, “Note on the Rate and Energy Efficiency Limits for Additive Manufacturing,” J. Ind. Ecol., Vol. 21, pp. S69–S79, https://doi.org/10.1111/jiec.12664

Hackel, L., J.R. Rankin, A. Rubenchik, W.E. King, and M. Matthews, 2018, “Laser Peening: A Tool for Additive Manufacturing Post-processing,” Addit. Manuf., Vol. 24, pp. 67–75, https://doi.org/10.1016/j.addma.2018.09.013

Haghdadi, N., M. Laleh, M. Moyle, and S. Primig, 2021, “Additive Manufacturing of Steels: A Review of Achievements and Challenges,” J. Mater. Sci., Vol. 56, pp. 64–107, https://doi.org/10.1007/s10853-020-05109-0

Haghdadi, N., R. DeMott, P.L. Stephenson, X.Z. Liao, S.P. Ringer, and S. Primig, 2020, “Five-Parameter Characterization of Intervariant Boundaries in Additively Manufactured Ti-6Al-4V,” Mater. & Des., Vol. 196, https://doi.org/10.1016/j.matdes.2020.109177

Hascoet, J.Y., K.P. Karunakaran, and S. Marya, 2014, “Additive Manufacturing Viewed from Material Science: State of the Art & Fundamentals,” Mater. Sci. Forum, Vol. 783–786, pp. 2347–2352, https://doi.org/10.4028/www.scientific.net/msf.783-786.2347

Hayes, B.J., B.W. Martin, B. Welk, S.J. Kuhr, T.K. Ales, D.A. Brice, I. Ghamarian, A.H. Baker, C. V. Haden, D.G. Harlow, H.L. Fraser, and P.C. Collins, 2017, “Predicting Tensile Properties of Ti-6Al-4V Produced via Directed Energy Deposition,” Acta Mater., Vol. 133, pp. 120–133, https://doi.org/10.1016/j.actamat.2017.05.025

Henry, S., 1943, Study of the Nucleation and Growth of Feathery Grains in Aluminum Alloys, EPFL

Henry, S., and M. Rappaz, 2000, “Twinned Feathery Grains and Related Morphologies in Aluminum Alloys,” Mater. Sci. Forum., Vol. 329, pp. 65–72, https://doi.org/10.4028/www.scientific.net/msf.329-330.65

Hofmeister, W., M. Griffith, M. Ensz, and J. Smugeresky, 2001, “Solidification in Direct Metal Deposition by LENS Processing,” JOM, Vol. 53, pp. 30–34, https://doi.org/10.1007/s11837-001-0066-z

Hojjatzadeh, S.M.H., N.D. Parab, W. Yan, Q. Guo, L. Xiong, C. Zhao, M. Qu, L.I. Escano, X. Xiao, K. Fezzaa, W. Everhart, T. Sun, and L. Chen, 2019, “Pore Elimination Mechanisms during 3D Printing of Metals,” Nat. Commun., Vol. 10, pp. 1–8, https://doi.org/10.1038/s41467-019-10973-9

Huang, W.C., C.S. Chuang, C.C. Lin, C.H. Wu, D.Y. Lin, S.H. Liu, W.P. Tseng, and J. Bin Horng, 2014, “Microstructure-Controllable Laser Additive Manufacturing Process for Metal Products,” Phys. Procedia., Vol. 56, pp. 58–63, https://doi.org/10.1016/j.phpro.2014.08.096

Hull, C.W., 1984, Apparatus for Production of Three-Dimensional Objects by Stereolithography, US Patent 4,575,330, filed 8 August 1984, and issued 19 December 1989

Hussein, A., L. Hao, C. Yan, R. Everson, and P. Young, 2013, “Advanced Lattice Support Structures for Metal Additive Manufacturing,” J. Mater. Process. Technol., Vol. 213, No. 7, pp. 1019–1026, https://doi.org/10.1016/j.jmatprotec.2013.01.020

Ida, N., and N. Meyendorf, 2019, Handbook of Advanced Nondestructive Evaluation, Springer International Publishing

Jacobs, L.J., 2014, “Nonlinear Ultrasonics for Material State Awareness,” AIP Conference Proceedings, Vol. 1581, https://doi.org/10.1063/1.4864797

Janousek, L., Z. Chen, N. Yusa, and K. Miya, 2005, “Excitation with Phase Shifted Fields-Enhancing Evaluation of Deep Cracks in Eddy-Current Testing,” NDT & E Int., Vol. 38, pp. 508–515, https://doi.org/10.1016/j.ndteint.2005.01.012

Jop, M., R. Wartbichler, P. Staron, E. Maawad, S. Mayer, and H. Clemens, 2020, “Microstructural and Phase Analysis of an Additively Manufactured Intermetallic TiAl Alloy using Metallographic Techniques and High-Energy X-Rays,” Pract. Metallogr., Vol. 57, pp. 84–95, https://doi.org/10.3139/147.110611

Joseph, J., T. Jarvis, X. Wu, N. Stanford, P. Hodgson, and D.M. Fabijanic, 2015, “Comparative Study of the Microstructures and Mechanical Properties of Direct Laser Fabricated and Arc-Melted AlxCoCrFeNi High Entropy Alloys,” Mater. Sci. Eng.: A, Vol. 633, pp. 184–193, https://doi.org/10.1016/j.msea.2015.02.072

Juechter, V., M.M. Franke, T. Merenda, A. Stich, C. Körner, and R.F. Singer, 2018, “Additive Manufacturing of Ti-45Al-4Nb-C by Selective Electron Beam Melting for Automotive Applications,” Addit. Manuf., Vol. 22, pp. 118–126, https://doi.org/10.1016/j.addma.2018.05.008

Kamath, R.R., P. Nandwana, Y. Ren, and H. Choo, 2021, “Solidification Texture, Variant Selection, and Phase Fraction in a Spot-Melt Electron-Beam Powder Bed Fusion Processed Ti-6Al-4V,” Addit. Manuf., Vol. 46, https://doi.org/10.1016/j.addma.2021.102136

Kelly, J.P., J.W. Elmer, F.J. Ryerson, J.R.I. Lee, and J.J. Haslam, 2021, “Directed Energy Deposition Additive Manufacturing of Functionally Graded Al-W Composites,” Addit. Manuf., Vol. 39, https://doi.org/10.1016/j.addma.2021.101845

Kenel, C., D. Grolimund, X. Li, E. Panepucci, V.A. Samson, D.F. Sanchez, F. Marone, and C. Leinenbach, 2017, “In Situ Investigation of Phase Transformations in Ti-6Al-4V under Additive Manufacturing Conditions Combining Laser Melting and High-Speed Micro-X-ray Diffraction,” Sci. Rep., Vol. 7, pp. 1–10, https://doi.org/10.1038/s41598-017-16760-0

Kenney, M.J., K. O’Donnell, M.J. Quintana, and P.C. Collins, 2021, “Spherical Pores as ‘Microstructural Informants’: Understanding Compositional, Thermal, and Mechanical Gyrations in Additively Manufactured Ti-6Al-4V,” Scripta Materialia, Vol. 198, https://doi.org/10.1016/j.scriptamat.2021.113827

Khairallah, S.A., A.T. Anderson, A. Rubenchik, and W.E. King, 2016, “Laser Powder-Bed Fusion Additive Manufacturing: Physics of Complex Melt Flow and Formation Mechanisms of Pores, Spatter, and Denudation Zones,” Acta Mater., Vol. 108, pp. 36–45, https://doi.org/10.1016/j.actamat.2016.02.014

King, W.E., A.T. Anderson, R.M. Ferencz, N.E. Hodge, C. Kamath, S.A. Khairallah, and A.M. Rubenchik, 2015, “Laser Powder Bed Fusion Additive Manufacturing of Metals; Physics, Computational, and Materials Challenges,” Appl. Phys. Rev., Vol. 2, https://doi.org/10.1063/1.4937809

King, W.E., H.D. Barth, V.M. Castillo, G.F. Gallegos, J.W. Gibbs, D.E. Hahn, C. Kamath, and A.M. Rubenchik, 2014, “Observation of Keyhole-Mode Laser Melting in Laser Powder-Bed fusion Additive Manufacturing,” J. Mater. Process. Technol., Vol. 214, No. 12, pp. 2915–2925, https://doi.org/10.1016/j.jmatprotec.2014.06.005

Kobryn, P.A., N.R. Ontko, L.P. Perkins, and J.S. Tiley, 2006, “Additive Manufacturing of Aerospace Alloys for Aircraft Structures,” Cost Effective Manufacture via Net-Shape Processing Meeting Proceedings, RTO-MP-AVT-139, Paper 3, https://apps.dtic.mil/sti/pdfs/ADA521726.pdf

Kodama, H., 1998, “Automatic Method for Fabricating a Three-Dimensional Plastic Model with Photo-Hardening Polymer,” Rev. Sci. Instrum., Vol. 52, https://doi.org/ 10.1063/1.1136492

Koester, L., H. Taheri, T. Bigelow, and L. Bond, 2018, “Nondestructive Testing for Metal Parts Fabricated Using Powder Based Additive Manufacturing,” Materials Evaluation, Vol. 76, No. 4, pp. 514–524

Kumar, A., and K. Maji, 2020, “Selection of Process Parameters for Near-Net Shape Deposition in Wire Arc Additive Manufacturing by Genetic Algorithm,” J. Mater. Eng. Perform., Vol. 29, pp. 3334–3352, https://doi.org/10.1007/s11665-020-04847-1

Kumar, S., S.R. Vijayan, P. Nandwana, J.D. Poplawsky, C. Yan, and S.S. Babu, 2021, “Role of Thermo-Mechanical Gyrations on the α/β Interface Stability in a Ti6Al4V AM Alloy,” Scr. Mater., Vol. 204, https://doi.org/10.1016/j.scriptamat.2021.114134

Kumara, C., A.R. Balachandramurthi, S. Goel, F. Hanning, and J. Moverare, 2020, “Toward a Better Understanding of Phase Transformations in Additive Manufacturing of Alloy 718,” Materialia, Vol. 13, https://doi.org/10.1016/j.mtla.2020.100862

Kunze, K., T. Etter, J. Grässlin, and V. Shklover, 2015, “Texture, Anisotropy in Microstructure and Mechanical Properties of IN738LC Alloy Processed by Selective Laser Melting (SLM),” Mater. Sci. Eng.: A., Vol. 620, pp. 213–222, https://doi.org/https://doi.org/10.1016/j.msea.2014.10.003

Laleh, M., A.E. Hughes, W. Xu, N. Haghdadi, K. Wang, P. Cizek, I. Gibson, and M.Y. Tan, 2019, “On the Unusual Intergranular Corrosion Resistance of 316L Stainless Steel Additively Manufactured by Selective Laser Melting,” Corros. Sci., Vol. 161, https://doi.org/10.1016/j.corsci.2019.108189

Lévesque, D., C. Bescond, M. Lord, X. Cao, P. Wanjara, and J.-P. Monchalin, 2016, “Inspection of Additive Manufactured Parts using Laser Ultrasonics,” AIP Conf. Proc., Vol. 1706, https://doi.org/10.1063/1.4940606

Li, Y., Z. Feng, L. Hao, L. Huang, C. Xin, Y. Wang, E. Bilotti, K. Essa, H. Zhang, Z. Li, F. Yan, and T. Peijs, 2020, “A Review on Functionally Graded Materials and Structures via Additive Manufacturing: From Multi-Scale Design to Versatile Functional Properties,” Adv. Mater. Technol., Vol. 5, No. 6, https://doi.org/10.1002/admt.201900981

Lim, S., R.A. Buswell, T.T. Le, S.A. Austin, A.G.F. Gibb, and T. Thorpe, 2012, “Developments in Construction-Scale Additive Manufacturing Processes,” Autom. Constr., Vol. 21, pp. 262–268, https://doi.org/10.1016/j.autcon.2011.06.010

Liu, J., A.T. Gaynor, S. Chen, Z. Kang, K. Suresh, A. Takezawa, L. Li, J. Kato, J. Tang, C.C.L. Wang, L. Cheng, X. Liang, and A.C. To, 2018, “Current and Future Trends in Topology Optimization for Additive Manufacturing,” Struct. Multidiscip. Optim., Vol. 57, pp. 2457–2483, https://doi.org/10.1007/s00158-018-1994-3

Liu, J., R.L. Davidchack, and H.B. Dong, 2013, “Molecular Dynamics Calculation of Solid-Liquid Interfacial Free Energy and Its Anisotropy during Iron Solidification,” Comput. Mater. Sci., Vol. 74, pp. 92–100, https://doi.org/10.1016/j.commatsci.2013.03.018

Love, L.J., B. Richardson, R. Lind, R. Dehoff, B. Peter, and C. Blue, 2013, “Free Form Fluidics,” Mechanical Engineering, Vol. 135, No. 6, pp. 17–20, https://doi.org/10.1115/1.2013-JUN-9

Lu, Q.Y., N.V. Nguyen, A.J.W. Hum, T. Tran, and C.H. Wong, 2019, “Optical In-Situ Monitoring and Correlation of Density and Mechanical Properties of Stainless Steel Parts Produced by Selective Laser Melting Process Based on Varied Energy Density,” J. Mater. Process. Technol., Vol. 271, pp. 520–531, https://doi.org/10.1016/j.jmatprotec.2019.04.026

Madireddy, G., C. Li, J. Liu, and M.P. Sealy, 2019, “Modeling Thermal and Mechanical Cancellation of Residual Stress from Hybrid Additive Manufacturing by Laser Peening,” Nanotechnology and Precis. Eng., Vol. 2, pp. 49–60, https://doi.org/10.1016/j.npe.2019.07.001

Mandache, C., 2019, “Overview of Non-destructive Evaluation Techniques for Metal-based Additive Manufacturing,” Mater. Sci. Technol., Vol. 35, pp. 1007–1015, https://doi.org/10.1080/02670836.2019.1596370

Marini, D., and J.R. Corney, 2020, “Process Selection Methodology for Near Net Shape Manufacturing,” International Journal of Advanced Manufacturing Technology, Vol. 106, pp. 1967–1987, https://doi.org/10.1007/s00170-019-04561-w

Martin, A.A., N.P. Calta, S.A. Khairallah, J. Wang, P.J. Depond, A.Y. Fong, V. Thampy, G.M. Guss, A.M. Kiss, K.H. Stone, C.J. Tassone, J. Nelson Weker, M.F. Toney, T. van Buuren, and M.J. Matthews, 2019, “Dynamics of Pore Formation during Laser Powder Bed Fusion Additive Manufacturing,” Nat. Commun., Vol. 10, pp. 1–10, https://doi.org/10.1038/s41467-019-10009-2

Matthews, M.J., G. Guss, S.A. Khairallah, A.M. Rubenchik, P.J. Depond, and W.E. King, 2016, “Denudation of Metal Powder Layers in Laser Powder Bed Fusion Processes,” Acta Mater., Vol. 114, pp. 33–42, https://doi.org/10.1016/j.actamat.2016.05.017

McNeil, J.L., K. Sisco, C. Frederick, M. Massey, K. Carver, F. List, C. Qiu, M. Mader, S. Sundarraj, and S.S. Babu, 2020, “In-Situ Monitoring for Defect Identification in Nickel Alloy Complex Geometries Fabricated by L-PBF Additive Manufacturing,” Metall. Mater. Trans. A, Vol. 51, pp. 6528–6545, https://doi.org/10.1007/s11661-020-06036-0

Menasche, D.B., W.D. Musinski, M. Obstalecki, M.N. Shah, S.P. Donegan, J.V. Bernier, P. Kenesei, J.-S. Park, and P.A. Shade, 2021, “AFRL Additive Manufacturing Modeling Series: Challenge 4, In Situ Mechanical Test of an IN625 Sample with Concurrent High-Energy Diffraction Microscopy Characterization,” Integr. Mater. Manuf. Innov., Vol. 10, pp. 338–347, https://doi.org/https://doi.org/10.1007/s40192-021-00218-3

Meng, L., W. Zhang, D. Quan, G. Shi, L. Tang, Y. Hou, P. Breitkopf, J. Zhu, and T. Gao, 2020, “From Topology Optimization Design to Additive Manufacturing: Today’s Success and Tomorrow’s Roadmap,” Archives of Computational Methods in Engineering, Vol. 27, pp. 805–830, https://doi.org/10.1007/s11831-019-09331-1

Mercelis, P., and J.P. Kruth, 2006, “Residual Stresses in Selective Laser Sintering and Selective Laser Melting,” Rapid Prototyping Journal, Vol. 12, No. 5, pp. 254–265, https://doi.org/10.1108/13552540610707013

Michaleris, P., 2014, “Modeling Metal Deposition in Heat Transfer Analyses of Additive Manufacturing Processes,” Finite Elem. Anal. Des., Vol. 86, pp. 51–60, https://doi.org/10.1016/j.finel.2014.04.003

Morris, L., and W. Winegard, 1969, “Segregation and Morphology of Cells during Freezing,” J. Inst. Met., Vol. 97, pp. 220–222

Mullins, W.W., 1957, “Theory of Thermal Grooving,” J. Appl. Phys., Vol. 28, No. 3, https://doi.org/10.1063/1.1722742

Mullins, W.W., 1958, “The Effect of Thermal Grooving on Grain Boundary Motion,” Acta Metall., Vol. 6, No. 6, pp. 414–427, https://doi.org/10.1016/0001-6160(58)90020-8

Nanekar, P.P., and B.K. Shah, 2003, “Characterization of Material Properties by Ultrasonics,” BARC Newsletter, Vol. 249, pp. 25–38

Niendorf, T., S. Leuders, A. Riemer, H.A. Richard, T. Tröster, and D. Schwarze, 2013, “Highly Anisotropic Steel Processed by Selective Laser

Melting,” Metall. Mater. Trans. B, Vol. 44, pp. 794–796, https://doi.org/10.1007/s11663-013-9875-z

Obielodan, J., and B. Stucker, 2013, “Characterization of LENS-Fabricated Ti6Al4V and Ti6Al4V/TiC Dual-Material Transition Joints,” Int. J. Adv. Manuf. Technol., Vol. 66, pp. 2053–2061, https://doi.org/10.1007/s00170-012-4481-9

Petrov, P., C. Georgiev, and G. Petrov, 1998, “Experimental Investigation of Weld Pool Formation in Electron Beam Welding,” Vacuum, Vol. 51, No. 3, pp. 339–343, https://doi.org/10.1016/S0042-207X(98)00110-9

Pieris, D., T. Stratoudaki, Y. Javadi, P. Lukacs, S. Catchpole-Smith, P.D. Wilcox, A. Clare, and M. Clark, 2020, “Laser Induced Phased Arrays (LIPA) to Detect Nested Features in Additively Manufactured Components,” Mater. & Des., Vol. 187, https://doi.org/10.1016/j.matdes.2019.108412

Pogson, S., P. Fox, W. O’Neill, and C.J. Sutcliffe, 2004, “The Direct Metal Laser Remelting of Copper and Tool Steel Powders,” Mater. Sci. Eng.: A, Vol. 386, pp. 453–459, https://doi.org/10.1016/j.msea.2004.08.015

Polonsky, A.T., N. Raghavan, M.L.P. Echlin, M.M. Kirka, R.R. Dehoff, and T.M. Pollock, 2020, “3D Characterization of the Columnar-to-Equiaxed Transition in Additively Manufactured Inconel 718,” Superalloys 2020, pp. 990–1002, https://doi.org/10.1007/978-3-030-51834-9_97

Qiu, C., G.A. Ravi, and M.M. Attallah, 2015, “Microstructural Control during Direct Laser Deposition of a β-Titanium Alloy,” Mater. & Des., Vol. 81, pp. 21–30, https://doi.org/https://doi.org/10.1016/j.matdes.2015.05.031

Quintana, M.J., K. O’Donnell, M.J. Kenney, and P.C. Collins, 2021, “Differences in Defect Distribution across Scan Strategies in Electron Beam AM Ti-6Al-4V,” Adv. Mater. Process., Vol. 179, No. 5, pp. 20–23

Quintana, M.J., M.J. Kenney, P. Agrawal, and P.C. Collins, 2020, “Texture Analysis of Additively Manufactured Ti-6Al-4V Deposited Using Different Scanning Strategies,” Metall. Mater. Trans. A, Vol. 51, pp. 6574–6583, https://doi.org/10.1007/s11661-020-06040-4

Raghavan, A., H.L. Wei, T.A. Palmer, and T. DebRoy, 2013, “Heat Transfer and Fluid Flow in Additive Manufacturing,” J. Laser Appl., Vol. 25, No. 5, https://doi.org/10.2351/1.4817788

Repossini, G., V. Laguzza, M. Grasso, and B.M. Colosimo, 2017, “On the Use of Spatter Signature for In-Situ Monitoring of Laser Powder Bed Fusion,” Addit. Manuf., Vol. 16, pp. 35–48, https://doi.org/10.1016/j.addma.2017.05.004

Riveiro, A., J. del Val, R. Comesaña, F. Lusquiños, F. Quintero, M. Boutinguiza, and J. Pou, 2019, “Laser Additive Manufacturing Processes for Near Net Shape Components,” in Near Net Shape Manufacturing Processes, pp. 105–141, https://doi.org/10.1007/978-3-030-10579-2_5

Roberts, I.A., C.J. Wang, R. Esterlein, M. Stanford, and D.J. Mynors, 2009, “A Three-Dimensional Finite Element Analysis of the Temperature Field during Laser Melting of Metal Powders in Additive Layer Manufacturing,” Int. J. Mach. Tools & Manuf., Vol. 49, pp. 916–923, https://doi.org/10.1016/j.ijmachtools.2009.07.004

Sato, Y., and T. Kuwana, 1995, “Oxygen Absorption in Iron and Steel Weld Metal,” ISIJ International, Vol. 35, No. 10, pp. 1162–1169

Saville, A.I., S.C. Vogel, A. Creuziger, J.T. Benzing, A.L. Pilchak, P. Nandwana, J. Klemm-Toole, K.D. Clarke, S.L. Semiatin, and A.J. Clarke, 2021, “Texture Evolution as a Function of Scan Strategy and Build Height in Electron Beam Melted Ti-6Al-4V,” Addit. Manuf., Vol. 46, https://doi.org/10.1016/j.addma.2021.102118

Schwartz, J.J., and A.J. Boydston, 2019, “Multimaterial Actinic Spatial Control 3D and 4D Printing,” Nature Communications, Vol. 10, https://doi.org/10.1038/s41467-019-08639-7

Schwendner, K.I., R. Banerjee, P.C. Collins, C.A. Brice, and H.L. Fraser, 2001, “Direct Laser Deposition of Alloys from Elemental Powder Blends,” Scr. Mater., Vol. 45, No. 10, pp. 1123–1129, https://doi.org/10.1016/S1359-6462(01)01107-1

Semiatin, S.L., V.G. Ivanchenko, S. V. Akhonin, and O.M. Ivasishin, 2004, “Diffusion Models for Evaporation Losses during Electron-Beam Melting of Alpha/Beta-Titanium Alloys,” Metall. Mater. Trans. B, Vol. 35, pp. 235–245, https://doi.org/10.1007/s11663-004-0025-5

Shao, M., S. Vijayan, P. Nandwana, and J.R. Jinschek, 2020, “The Effect of Beam Scan Strategies on Microstructural Variations in Ti-6Al-4V Fabricated by Electron Beam Powder Bed Fusion,” Mater. & Des., Vol. 196, https://doi.org/10.1016/j.matdes.2020.109165

Sharratt, B.M., 2015, “Non-destructive Techniques and Technologies for Qualification of Additive Manufactured Parts and Processes: A Literature Review,” Sharratt Res. Consult. Inc., Victoria, BC, Contract Rep. No. DRDCRDDC-2015-C035

Slotwinski, J.A., E.J. Garboczi, and K.M. Hebenstreit, 2014, “Porosity Measurements and Analysis for Metal Additive Manufacturing Process Control,” J. Res. Natl. Inst. Stand. Technol., Vol. 119, p. 494–528

Smith, J., W. Xiong, W. Yan, S. Lin, P. Cheng, O.L. Kafka, G.J. Wagner, J. Cao, and W.K. Liu, 2016a, “Linking Process, Structure, Property, and Performance for Metal-based Additive Manufacturing: Computational Approaches with Experimental Support,” Comput. Mech., Vol. 57, pp. 583–610, https://doi.org/10.1007/s00466-015-1240-4

Smith, R.J., M. Hirsch, R. Patel, W. Li, A.T. Clare, and S.D. Sharples, 2016b, “Spatially Resolved Acoustic Spectroscopy for Selective Laser Melting,” J. Mater. Process. Technol., Vol. 236, pp. 93–102, https://doi.org/10.1016/j.jmatprotec.2016.05.005

Smith, R.J., W. Li, J. Coulson, M. Clark, M.G. Somekh, and S.D. Sharples, 2014, “Spatially Resolved Acoustic Spectroscopy for Rapid Imaging of Material Microstructure and Grain Orientation,” Meas. Sci. Technol., Vol. 25, No. 5, 055902

Sochalski-Kolbus, L.M., E.A. Payzant, P.A. Cornwell, T.R. Watkins, S.S. Babu, R.R. Dehoff, M. Lorenz, O. Ovchinnikova, and C. Duty, 2015, “Comparison of Residual Stresses in Inconel 718 Simple Parts Made by Electron Beam Melting and Direct Laser Metal Sintering,” Metall. Mater. Trans. A, Vol. 46, pp. 1419–1432, https://doi.org/10.1007/s11661-014-2722-2

Song, J.Y., S. Sato, Y. Koizumi, and A. Chiba, 2014, “Effect of Cobalt Addition on the Deformation and Recrystallization Textures of Polycrystalline IN713C Nickel Based Superalloy,” Adv. Mater. Res., Vol. 922, pp. 711–715, https://doi.org/10.4028/www.scientific.net/AMR.922.711

Sotelo, L.D., H. Hadidi, C.S. Pratt, M.P. Sealy, and J.A. Turner, 2021, “Ultrasonic Mapping of Hybrid Additively Manufactured 420 Stainless Steel”, Ultrasonics, Vol. 110, https://doi.org/10.1016/j.ultras.2020.106269

Stephenson, P.L., N. Haghdadi, R. DeMott, X.Z. Liao, S.P. Ringer, and S. Primig, 2020, “Effect of Scanning Strategy on Variant Selection in Additively Manufactured Ti-6Al-4V,” Addit. Manuf., Vol. 36, https://doi.org/10.1016/j.addma.2020.101581

Sun, S.H., Y. Koizumi, S. Kurosu, Y.P. Li, H. Matsumoto, and A. Chiba, 2014, “Build Direction Dependence of Microstructure and High-Temperature Tensile Property of Co-Cr-Mo Alloy Fabricated by Electron Beam Melting,” Acta Mater., Vol. 64, pp. 154–168 https://doi.org/10.1016/j.actamat.2013.10.017

Taheri, H., M.R.B.M. Shoaib, L.W. Koester, T.A. Bigelow, P.C. Collins, and L.J. Bond, 2017, “Powder-based Additive Manufacturing – A Review of Types of Defects, Generation Mechanisms, Detection, Property Evaluation and Metrology,” Int. J. Addit. Subtractive Mater. Manuf., Vol. 1, No. 2, pp. 172–209

Tammas-Williams, S., and I. Todd, 2017, “Design for Additive Manufacturing with Site-Specific Properties in Metals and Alloys,” Scr. Mater., Vol. 135, pp. 105–110, https://doi.org/10.1016/j.scriptamat.2016.10.030

Tammas-Williams, S., H. Zhao, F. Léonard, F. Derguti, I. Todd, P.B. Prangnell, 2015, “XCT Analysis of the Influence of Melt Strategies on Defect Population in Ti-6Al-4V Components Manufactured by Selective Electron Beam Melting,” Mater. Charact., Vol. 102, pp. 47–61, https://doi.org/10.1016/j.matchar.2015.02.008

Tang, H.P., G.Y. Yang, W.P. Jia, W.W. He, S.L. Lu, and M. Qian, 2015, “Additive Manufacturing of a High Niobium-Containing Titanium Aluminide Alloy by Selective Electron Beam Melting,” Mater. Sci. Eng. A., Vol. 636, pp. 103–107, https://doi.org/10.1016/j.msea.2015.03.079

Tao, W., and M.C. Leu, 2016, “Design of Lattice Structure for Additive Manufacturing,” International Symposium on Flexible Automation, 1–3 August, Cleveland, OH, pp. 325–332

Todorov, E., P. Boulware, and K. Gaah, 2018, “Demonstration of Array Eddy Current Technology for Real-Time Monitoring of Laser Powder Bed Fusion Additive Manufacturing Process,” Proceedings Vol. 10599, Nondestruct. Charact. Monit. Adv. Mater. Aerospace, Civ. Infrastructure, and Transp. XII, International Society for Optics and Photonics, https://doi.org/10.1117/12.2297511

Vaissier, B., J.P. Pernot, L. Chougrani, and P. Véron, 2019, “Genetic-Algorithm Based Framework for Lattice Support Structure Optimization in Additive Manufacturing,” Computer-Aided Design, Vol. 110, pp. 11–23, https://doi.org/10.1016/j.cad.2018.12.007

Vilaro, T., C. Colin, and J.D. Bartout, 2011, “As-Fabricated and Heat-Treated Microstructures of the Ti-6Al-4V Alloy Processed by Selective Laser Melting,” Metall. Mater. Trans. A, Vol. 42, pp. 3190–3199, https://doi.org/10.1007/s11661-011-0731-y

Vilaro, T., C. Colin, J.D. Bartout, L. Nazé, and M. Sennour, 2012, “Microstructural and Mechanical Approaches of the Selective Laser Melting Process Applied to a Nickel-Base Superalloy,” Mater. Sci. Eng. A, Vol. 534, pp. 446–451, https://doi.org/10.1016/j.msea.2011.11.092

Wang, Y., L. Zhang, S. Daynes, H. Zhang, S. Feih, and M.Y. Wang, 2018, “Design of Graded Lattice Structure with Optimized Mesostructures for Additive Manufacturing,” Materials & Design, Vol. 142, pp. 114–123, https://doi.org/10.1016/j.matdes.2018.01.011

Williams, S.W., F. Martina, A.C. Addison, J. Ding, G. Pardal, and P. Colegrove, 2016, “Wire + Arc Additive Manufacturing,” Mater. Sci. Technol., Vol. 32, No. 7, pp. 641–647, https://doi.org/10.1179/1743284715Y.0000000073

Wolff, S.J., S. Lin, E.J. Faierson, W.K. Liu, G.J. Wagner, and J. Cao, 2017, “A Framework to Link Localized Cooling and Properties of Directed Energy Deposition (DED)-Processed Ti-6Al-4V,” Acta Mater., Vol. 132, pp. 106–117, https://doi.org/10.1016/j.actamat.2017.04.027

Wu, H.-Y., M. Rubinstein, E. Shih, J. Guttag, F. Durand, and W. Freeman, 2012, “Eulerian Video Magnification for Revealing Subtle Changes in the World,” ACM Transactions on Graphics, Vol. 31, pp. 1–8, https://doi.org/10.1145/2185520.2185561

Wu, X., R. Sharman, J. Mei, and W. Voice, 2002, “Direct Laser Fabrication and Microstructure of a Burn-Resistant Ti Alloy,” Mater. & Des., Vol. 23, pp. 239–247, https://doi.org/https://doi.org/10.1016/S0261-3069(01)00086-3

Xavier, M.S., S. Yang, C. Comte, A. Bab-Hadiashar, N. Wilson, and I. Cole, 2020, “Nondestructive Quantitative Characterisation of Material Phases in Metal Additive Manufacturing using Multi-energy Synchrotron X-rays Microtomography,” Int. J. Adv. Manuf. Technol., Vol. 106, pp. 1601–1615, https://doi.org/10.1007/s00170-019-04597-y

Xie, Y., H. Zhang, and F. Zhou, 2016, “Improvement in Geometrical Accuracy and Mechanical Property for Arc-Based Additive Manufacturing Using Metamorphic Rolling Mechanism,” J. Manuf. Sci. Eng. Trans., Vol. 138, No. 11, https://doi.org/10.1115/1.4032079

Yin, H., and S.D. Felicelli, 2010, “Dendrite Growth Simulation during Solidification in the LENS Process,” Acta Mater., Vol. 58, No. 4, pp. 1455–1465, https://doi.org/10.1016/j.actamat.2009.10.053

Yoder, J.K., R.J. Griffiths, and H.Z. Yu, 2021, “Deformation-Based Additive Manufacturing of 7075 Aluminum with Wrought-Like Mechanical Properties,” Materials & Design, Vol. 198, https://doi.org/10.1016/j.matdes.2020.109288

Zalameda, J.N., E.R. Burke, R.A. Hafley, K.M. Taminger, C.S. Domack, A. Brewer, and R.E. Martin, 2013, “Thermal Imaging for Assessment of Electron-Beam Freeform Fabrication (EBF 3) Additive Manufacturing Deposits,” Proceedings of Thermosense: Thermal Infrared Applications XXXV, Vol. 8705, https://doi.org/10.1117/12.2018233

Zecevic, M., R.J. McCabe, and M. Knezevic, 2015, “Spectral Database Solutions to Elasto-viscoplasticity within Finite Elements: Application to a Cobalt-Based FCC Superalloy,” Int. J. Plast., Vol. 70, pp. 151–165, https://doi.org/10.1016/j.ijplas.2015.03.007

Zhang, B., S. Liu, and Y.C. Shin, 2019a, “In-Process Monitoring of Porosity during Laser Additive Manufacturing Process,” Addit. Manuf., Vol. 28, pp. 497–505, https://doi.org/10.1016/j.addma.2019.05.030

Zhang, Q., J. Xie, Z. Gao, T. London, D. Griffiths, and V. Oancea, 2019b, “A Metallurgical Phase Transformation Framework Applied to SLM Additive Manufacturing Processes,” Materials & Design, Vol. 166, https://doi.org/10.1016/j.matdes.2019.107618

Zhang, Y., and A. Bandyopadhyay, 2019, “Direct Fabrication of Bimetallic Ti6Al4V+Al12Si Structures via Additive Manufacturing,” Addit. Manuf., Vol. 29, https://doi.org/10.1016/j.addma.2019.100783

Zhou, X., D. Wang, X. Liu, D.D. Zhang, S. Qu, J. Ma, G. London, Z. Shen, and W. Liu, 2015, “3D-Imaging of Selective Laser Melting Defects in a Co-Cr-Mo Alloy by Synchrotron Radiation Micro-CT,” Acta Materialia, Vol. 98, pp. 1–16, https://doi.org/10.1016/j.actamat.2015.07.014