Effects of Heat Treatment on a High-Pressure Die-Cast Mg-La-Y Alloy

被引：2

作者：

Gavras, Serge ^{[1
]}

Zhu, Suming ^{[1
]}

Easton, Mark A. ^{[1
]}

Gibson, Mark A. ^{[2
]}

Nie, Jian-Feng ^{[1
]}

机构：

[1] Monash Univ, Dept Mat Engn, CAST CRC, Clayton, Vic 3800, Australia

[2] CSIRO, Proc Sci & Engn, CAST CRC, Clayton, Vic 3168, Australia

来源：

LIGHT METALS TECHNOLOGY V | 2011年 / 690卷

关键词：

Magnesium alloys; creep; high-pressure die-cast; heat treatment; precipitation; AL;

D O I：

10.4028/www.scientific.net/MSF.690.210

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this study effects of heat treatments on the creep resistance at 177 degrees C/90MPa of a high-pressure die-cast Mg-2.70La-1.50Y (wt.%) alloy were examined. It was found that ageing at 160 degrees C for 24 h (T5) or a solution treatment at 520 degrees C for 1 h (T4) improved creep resistance and caused no blistering on the surface or dimensional changes to the die-cast specimens. TEM was used to characterize the microstructures of heat-treated samples. Improvements to creep resistance might be attributed to the pinning or otherwise retarding of dislocation motion by precipitates and/or solute atoms during creep.

引用

页码：210 / +

页数：2

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