Effect of hot torsion deformation on microstructure in AZ31 magnesium alloy

被引：0

作者：

Zarandi, Faramarz ^{[1
]}

Verma, Ravi ^{[2
]}

Essadiqi, Elhachmi ^{[3
]}

Yue, Stephen ^{[1
]}

机构：

[1] McGill Univ, Dept Met & Mat Engn, 3610 Univ, Montreal, PQ H3A 2B2, Canada

[2] Gen Motors R&D, Mat & Proc Lab, Warren, MI 48090 USA

[3] Mat Technol Lab CANMET, Ottawa, ON K1A 0G1, Canada

来源：

MAGNESIUM TECHNOLOGY 2006, PROCEEDINGS | 2006年

基金：

加拿大自然科学与工程研究理事会;

关键词：

torsion deformation; hot rolling; recrystallization; twinning;

D O I：

暂无

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Strength and ductility are desired characteristics in sheet materials for applications in the automobile industry. Such characteristics are developed during hot rolling of the as cast material to obtain sheet. Therefore, it is important to understand the evolution of microstructure during rolling. Because of the involvement of large strains in industrial sheet rolling, torsion deformation is a more suitable laboratory process to simulate the industrial rolling practice, compared to compressive or tensile deformation. In this work, an as cast AZ31 magnesium alloy was deformed in torsion under different thermomechanical conditions and the resultant microstructures were examined. At high temperatures, recrystallization through necklacing is the principal mechanism for microstructure evolution with nucleation of new grains at as cast grain boundaries. On the contrary, twinning contributes to the evolution of microstructure at low temperatures.

引用

页码：367 / +

页数：2

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