Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1580861 | Materials Science and Engineering: A | 2010 | 6 Pages |
Abstract
The strain-hardening behavior of Mg alloy AZ31B-H24 deformed in tension was analyzed using the Kocks-Mecking phenomenological approach. The relationship between strain-hardening behavior and dynamic recrystalliztion at elevated temperatures was investigated in this work. At room temperature, stage II strain-hardening consistent with the forest hardening mechanism, which was similar to that observed in face-centered cubic metals, was observed. The specimens tested at temperatures above 250 °C did not show stage II strain-hardening, and their stage III with a decreasing of strain-hardening rate took place immediately after yielding. The absence of stage II strain-hardening should be related to the dynamic recovery and recrystallization, causing the softening effects. The onset of dynamic recovery occurred earlier than that of the dynamic recrystallization (DRX).
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Authors
Horng-Yu Wu, Feng-Zheng Lin,