PRECIPITATION PROCESS IN Mg-Nd-Zn-Zr-Gd/Y ALLOY

被引：0
作者：
Li, J. H. [1 ,2 ]
Sha, G. [2 ,3 ]
Schumacher, P. [1 ,4 ]
Ringer, S. P. [2 ,3 ]
机构：
[1] Univ Leoben, Chair Casting Res, Dept Met, A-8700 Leoben, Austria
[2] Univ Sydney, Ctr Microscopy & Microanal, Sydney, NSW 2006, Australia
[3] Univ Sydney, ARC Ctr Excellence Design Light Met, Sydney, NSW 2006, Australia
[4] Austrian Foundry Res Inst, A-8700 Leoben, Austria
来源：
MAGNESIUM TECHNOLOGY 2011 | 2011年
关键词：
Mg-Nd-Zn-Zr-Gd/Y alloys; Age hardening; Precipitate; TEM; Atom probe tomography; MECHANICAL-PROPERTIES; MAGNESIUM ALLOYS; GADOLINIUM; MICROSTRUCTURE;
D O I：
暂无
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Transmission electron microscopy (TEM) and atom probe tomography (APT) were employed to investigate the solute clusters and precipitates formed in different Mg-Nd-Zn-Zr-Gd/Y alloys aged at 200 degrees C up to 100 h. TEM characterizations confirmed the precipitation in these alloys involved the formation of precipitates such as beta '', beta', beta 1 and beta Most precipitates habited on (01 (1) over bar0)(alpha-Mg) and a few thin plate (of 1-2 atomic layers in thickness) lying on (0001)(alpha-Mg). APT analyses revealed that the precipitates were enriched with Nd, Zn and Gd. Moreover, Nd partitioned more strongly into the precipitates than Gd and Zn. In contrast, Y was less prone to partition into precipitates than other alloying elements in these alloys.
引用
收藏
页码：255 / 259
页数：5
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