Role of Zn in enhancing the creep resistance of Mg-RE alloys

被引：24

作者：

Choudhuri, Deep ^{[1
]}

Jaeger, David ^{[1
]}

Gibson, Mark A. ^{[2
]}

Banerjee, Rajarshi ^{[1
]}

机构：

[1] Univ N Texas, Dept Mat Sci & Engn, Denton, TX 76207 USA

[2] CSIRO Proc Sci & Engn, Clayton, Vic 3169, Australia

来源：

SCRIPTA MATERIALIA | 2014年 / 86卷

关键词：

Magnesium alloys; Creep; Precipitation; TEM; Atom probe; MAGNESIUM ALLOYS; PRECIPITATION;

D O I：

10.1016/j.scriptamat.2014.04.026

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Addition of Zn to Mg-Nd-La alloys resulted in an order of magnitude drop in the minimum creep rate. This remarkable improvement in creep resistance resulted from a high number density of highly refined gamma" precipitates within the alpha-Mg matrix coupled with preferential segregation of Zn atoms to defect/dislocation structures. These two microstructural features are expected to enhance the creep resistance by retarding dislocation motion within the alpha-Mg matrix. (C) 2014 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：32 / 35

页数：4

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