AZ31镁合金压缩过程中的变形性能及组织演变

艾桃桃; 冯小明; 张会

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AZ31镁合金压缩过程中的变形性能及组织演变
Deformation Behavior and Microstructure Evolution of AZ31 Magnesium Alloy during Compression
2009年29卷第4期页码：372-374
纸质出版日期： 2009 ，
DOI：

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[1]艾桃桃,冯小明,张会.AZ31镁合金压缩过程中的变形性能及组织演变[J].特种铸造及有色合金,2009,29(04):372-374+293.

Ai Taotao, Feng Xiaoming, Zhang Hui. Deformation Behavior and Microstructure Evolution of AZ31 Magnesium Alloy during Compression[J]. Special Casting & Nonferrous Alloys, 2009,29(4):372-374.
[1]艾桃桃,冯小明,张会.AZ31镁合金压缩过程中的变形性能及组织演变[J].特种铸造及有色合金,2009,29(04):372-374+293. DOI：

Ai Taotao, Feng Xiaoming, Zhang Hui. Deformation Behavior and Microstructure Evolution of AZ31 Magnesium Alloy during Compression[J]. Special Casting & Nonferrous Alloys, 2009,29(4):372-374. DOI：

摘要

在不同温度下对AZ31镁合金进行了热压缩

研究了试验合金高温变形时变形量与温度之间的关系以及组织演变。结果表明

随着温度升高

AZ31镁合金塑变能力增加

适宜在高于240℃进行热加工。非基面滑移系开动是AZ31镁合金塑性提高的主要原因。随着变形量的增大

晶粒逐渐细化。当变形量达70%时

晶粒细化至2～3μm。发生动态再结晶是高温压缩过程中晶粒细化的主要原因。

Abstract

Hot compression test of AZ31 magnesium alloy was performed at different temperature to investigate relationship between deformation rate and deformation temperature as well as microstructure evolution of the tested alloy during high temperature hot compression. The results show that with increasing in deformation temperature

the plastic deformability of the AZ31 magnesium alloy is improved

which is attributed to the movement of non-datum plane slipping system

so the alloy is suitable for being hot worked at above 240 ℃. Grain size in the deformed AZ31 alloy can be refined with the increase of deformation rate

which is the result of dynamic recrystalization during the high temperature compression. The grain size with 2

μm can be observed with 70% deformation rate.