Application of Doppler Broadening of Annihilation Radiation Technique to Evaluate the Microhardness Variations during Isochronal Annealing of Al and Al (Mn) Alloys
Magda Mohammed El Sayed Abd El Wahab; W. Arafa;
Abstract
Doppler broadening measurements have been carried out to study the isochronal annealing of cold-worked
commercial pure Al (99.5%) and Al-1 wt.% Mn alloys. The deduced line shape and wing parameters
are investigated in the range from room temperature to 823 K and correlated with the corresponding
microhardness measurements. The vacancy migration and the effect of the precipitated Al6 Mn in Al (Mn)
alloys could be probed as a function of annealing temperature. Three stages of microstructures can be
distinguished in both Al and Al (Mn) alloys, which are recovery, partial recrystallization, and complete
recrystallization. The line shape parameter-wing parameter (S-W) map indicates the same behavior in
both alloys at high temperature. However, at low temperatures, Al (Mn) shows different behavior from
the linear trajectory Al alloy.
commercial pure Al (99.5%) and Al-1 wt.% Mn alloys. The deduced line shape and wing parameters
are investigated in the range from room temperature to 823 K and correlated with the corresponding
microhardness measurements. The vacancy migration and the effect of the precipitated Al6 Mn in Al (Mn)
alloys could be probed as a function of annealing temperature. Three stages of microstructures can be
distinguished in both Al and Al (Mn) alloys, which are recovery, partial recrystallization, and complete
recrystallization. The line shape parameter-wing parameter (S-W) map indicates the same behavior in
both alloys at high temperature. However, at low temperatures, Al (Mn) shows different behavior from
the linear trajectory Al alloy.
Other data
Title | Application of Doppler Broadening of Annihilation Radiation Technique to Evaluate the Microhardness Variations during Isochronal Annealing of Al and Al (Mn) Alloys | Authors | Magda Mohammed El Sayed Abd El Wahab ; W. Arafa | Keywords | Al and Al (Mn) alloys, Doppler broadening, positron annihilation, microhardness, recovery, recrystallization, S-W map | Issue Date | Jun-2000 | Publisher | Springer | Journal | Journal of Materials Engineering and Performance | Series/Report no. | 9(3); |
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