Low temperature superplasticity of nanocrystalline electrodeposited Ni-Co alloy

被引：27
|
作者：
Wang, GF
Chan, KC [1 ]
Zhang, KF
机构：
[1] Hong Kong Polytech Univ, Adv Mfg Technol Res Ctr, Dept Ind & Syst Engn, Hong Kong, Hong Kong, Peoples R China
[2] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 15001, Peoples R China
来源：
SCRIPTA MATERIALIA | 2006年 / 54卷 / 05期
关键词：
Ni-Co alloy; low temperature superplasticity; pulse current electrodeposition; nanocrystalline microstructure;
D O I：
10.1016/j.scriptamat.2005.11.024
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The superplasticity of an electrodeposited nanocrystalline Ni-Co alloy with an average grain size of 20 nm was investigated. A maximum elongation of 279% was obtained at a temperature of 773 K and a strain rate of 5 x 10(-3) s(-1), and a significant amount of twinning and dislocation was observed in the deformed specimens. The relatively low superplasticity of the alloy is discussed in terms of its grain growth and accommodation mechanisms. (c) 2005 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：765 / 770
页数：6
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