Journal
SCRIPTA MATERIALIA
Volume 67, Issue 3, Pages 277-280Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2012.04.040
Keywords
Magnesium alloys; Dynamic recrystallization; Strain rate; Hot working; Flow softening
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Funding
- EPSRC
- EPSRC [EP/F023464/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/F023464/1] Funding Source: researchfish
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The flow softening behavior of Mg-3Al-1Zn magnesium alloy in the temperature range 325-500 degrees C is quantified using plane strain compression. The flow softening ratio, defined as the steady-state stress at 0.6 strain to the peak stress, shows a linear relationship with the Zener-Hollomon (Z) parameter and varies from 45 to 70%. Higher levels of flow softening at high Z are associated with fully recrystallized structures, whereas lower flow softening levels at low Z exhibit a mix of large recrystallized and fine non-recrystallized grains. (C) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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