Direct observation of precipitation along twin boundaries and dissolution in a magnesium alloy annealing at high temperature

被引：38

作者：

Guan, Dikai ^{[1
]}

Nutter, John ^{[1
]}

Sharp, Joanne ^{[1
]}

Gao, Junheng ^{[1
]}

Rainforth, W. Mark ^{[1
]}

机构：

[1] Univ Sheffield, Dept Mat Sci & Engn, Sheffield S1 3JD, S Yorkshire, England

来源：

SCRIPTA MATERIALIA | 2017年 / 138卷

基金：

英国工程与自然科学研究理事会;

关键词：

Magnesium alloy; Twinning; Annealing; Precipitation; Recrystallization; RARE-EARTH ALLOYS; RECRYSTALLIZATION MECHANISMS; TEXTURE EVOLUTION; SEGREGATION; SOLUTE; DEFORMATION; STRAIN; ZN;

D O I：

10.1016/j.scriptamat.2017.05.015

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Precipitation along twin boundaries and dissolution in a cold-rolled Mg-Y-Nd alloy was directly observed for the first time during annealing at 490 degrees C Precipitation occurred concurrently with recrystallization and the combined effect of precipitation and solute segregated to twin boundaries modified the recrystallization behaviour. Precipitates later dissolved into the matrix at the point where full recrystallization was nearly complete. The precipitates and higher solute concentration along original twin boundaries hindered grain growth of newly formed recrystallized grains. Even where twin boundaries had been consumed by recrystallization, the size of recrystallized grains were still controlled by the pre-existing twin boundaries. (C) 2017 Acta Materialia Inc. Published by Elsevier Ltd.

引用

页码：39 / 43

页数：5

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