Primary Creep of Die-Cast Magnesium-Rare Earth Based Alloys

被引：29
|
作者：
Zhu, S. M.
Gibson, M. A. [2 ]
Nie, J. F. [1 ]
Easton, M. A.
Dunlop, G. L. [3 ]
机构：
[1] Monash Univ, Dept Mat Engn, Clayton, Vic 3800, Australia
[2] CSIRO Mat Sci & Engn, Clayton, Vic 3169, Australia
[3] Univ Queensland, St Lucia, Qld 4072, Australia
来源：
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2009年 / 40A卷 / 09期
关键词：
Creep Resistance; Primary Creep; Dynamic Precipitation; Precipitate Plate; Solid Solution Strengthen Effect;
D O I：
10.1007/s11661-009-9896-z
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The creep response of die-cast Mg-2.5RE-0.6Zn (wt pct) alloys with different rare earth (RE) mixtures has been investigated at 177 A degrees C. The Nd-rich alloy displayed significantly lower primary creep than its La-rich counterpart. Microstructural analyses revealed the formation of additional Nd-containing precipitates on dislocations in the Nd-rich alloy during creep. The degree of supersaturation of RE solutes in the alpha-Mg matrix after die casting is suggested to be the key factor in influencing primary creep.
引用
收藏
页码：2036 / 2041
页数：6
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