Microstructure and mechanical properties of Cu-Ni-Si alloys

被引：183

作者：

Monzen, Ryoichi ^{[1
]}

Watanabe, Chihiro ^{[1
]}

机构：

[1] Kanazawa Univ, Grad Sch Nat Sci & Technol, Div Innovat Technol & Sci, Kanazawa, Ishikawa 9201192, Japan

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2008年 / 483-84卷

基金：

日本学术振兴会;

关键词：

Cu-Ni-Si alloy; age hardening; mechanical properties; stress relaxation;

D O I：

10.1016/j.msea.2006.12.163

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The microstructure and mechanical properties of 0.1 wt.% Mg-added and Mg-free Cu-2.0 wt.% Ni-0.5 wt.% Si alloys aged at 400 degrees C have been examined. The addition of Mg promotes the formation of disk-shaped Ni(2)Si precipitates. The Cu-Ni-Si-Mg alloy exhibits higher strength and resistance to stress relaxation than the Cu-Ni-Si alloy. The higher strength or stress relaxation resistance is attributable to the reduction in inter-precipitate spacing by the Mg addition or the drag effect of Mg atoms on dislocation motion. The Cu-Ni-Si alloy with a large grain size of 150 mu m shows higher stress relaxation resistance than the alloy with a small grain size of 10 mu m because of a lower density of mobile dislocations in the former alloy. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：117 / 119

页数：3

共 11 条

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