The variation of work hardening characteristics of Al-5 wt% Mg alloy during phase transition
The aim of this study is to investigate the effect of aging conditions on the stress−strain behavior along with microstructure changes of the Al-5 wt% Mg alloy. Following solid solution treatment and aging of specimens at temperatures ranging from 373 to 573 K for various aging times (1/4 to 4 h), s...
Gespeichert in:
Veröffentlicht in: | Physica. B, Condensed matter Condensed matter, 2010-09, Vol.405 (17), p.3616-3623 |
---|---|
Hauptverfasser: | , , , |
Format: | Artikel |
Sprache: | eng |
Schlagworte: | |
Online-Zugang: | Volltext |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
Zusammenfassung: | The aim of this study is to investigate the effect of aging conditions on the stress−strain behavior along with microstructure changes of the Al-5
wt% Mg alloy. Following solid solution treatment and aging of specimens at temperatures ranging from 373 to 573
K for various aging times (1/4 to 4
h), stress−strain tests were performed at different testing temperatures (313−343
K). The work hardening parameters (
σ
y,
σ
f,
χ
p and
Y) were found to decrease continuously with pre-aging times at all aging and testing temperatures, where the softening parameters (
ε
f and
L) oppose this behavior. The variation in stress−strain parameters with increasing aging temperatures and aging times was explained on the basis of structural transformations taking place in the Al−Mg alloy. A precipitate-dislocation intersections mechanism was assumed as the rate-controlling mechanism for alloy. |
---|---|
ISSN: | 0921-4526 1873-2135 |
DOI: | 10.1016/j.physb.2010.05.051 |