Study of the Discontinuity Parameters due to Cold Work for 3005 Aluminum Alloy using Positron
Publication: Publication Date: 1 December 2015
Positron annihilation lifetime spectroscopy
(PALS) was used to monitor discontinuities in
3005 aluminum alloy. The positron lifetime value
was found to be influenced by changes in the
concentration of discontinuities. PALS measurements
were used to study the behavior of the
discontinuity concentration for 3005 aluminum
alloy with deformations. Data were analyzed using
the PALSfit program. The mean lifetime and
trapping rates were studied for samples deformed
up to 40.30%. The concentrations of discontinuities
and dislocation densities were found to
increase as a function of the thickness reduction.
The behaviors of these parameters were matched
with theoretical calculations.
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