Flow softening behavior during dynamic recrystallization in Mg-3Al-1Zn magnesium alloy

被引：33

作者：

Bhattacharya, R. ^{[1
,2
]}

Wynne, B. P. ^{[2
]}

Rainforth, W. M. ^{[2
]}

机构：

[1] Univ Strathclyde, Adv Forming Res Ctr, Glasgow PA4 9LJ, Lanark, Scotland

[2] Univ Sheffield, Inst Microstruct & Mech Proc Engn, Sheffield S1 3JD, S Yorkshire, England

来源：

SCRIPTA MATERIALIA | 2012年 / 67卷 / 03期

基金：

英国工程与自然科学研究理事会;

关键词：

Magnesium alloys; Dynamic recrystallization; Strain rate; Hot working; Flow softening; DEFORMATION; STRESS;

D O I：

10.1016/j.scriptamat.2012.04.040

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

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.

引用

页码：277 / 280

页数：4

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