An investigation of the dynamic recrystallisation behaviour of magnesium AZ31 alloy at 450°C using plane strain compression testing as a tool

被引：0

作者：

Wynne, B. P. ^{[1
]}

Bhattacharya, R. ^{[2
]}

Davis, B. ^{[3
]}

Rainforth, W. M. ^{[1
]}

机构：

[1] Univ Sheffield, IMMPETUS Inst Microstruct & Mech Proc Engn, Sheffield S10 2TN, S Yorkshire, England

[2] Univ Warwick, Warwick Mfg Grp, Warwick, England

[3] Magnesium Elekt North Amer, Madison, IL USA

来源：

RECRYSTALLIZATION AND GRAIN GROWTH IV | 2012年 / 715-716卷

关键词：

Hot working; dynamic recrystallisation; AZ31; microstructure; flow stress; texture;

D O I：

10.4028/www.scientific.net/MSF.715-716.164

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The dynamic recrystallisation (DRX) behaviour of magnesium AZ31 is investigated using a plane train compression (PSC) testing machine at 450 degrees C. The variables included strain rate, double hit including intermittent anneal and double hits with different strain rate at each hit. The alloy shows higher peak stress and strain with increasing strain rates. Predominant basal texture with different intensities are observed at different strain rates. The annealing treatment between double tests leads to strong basal texture. Reversal of strain rate during double hit results in similar flow curves. This shows that in AZ31 alloy, DRX mechanism is independent of the initial microstructure and only depends on the test condition viz, temperature, strain rate and total equivalent strain.

引用

页码：164 / +

页数：2

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