Investigation of superplasticity in a Ni50Al20Fe30 intermetallic compound

被引：11
作者：
Zhou, WL
Guo, JT
Chen, RS
Zhou, JY
机构：
[1] Chinese Acad Sci, Inst Met Res, Shenyang 110015, Peoples R China
[2] Dalian Univ Technol, Dept Mat Engn, Dalian 116024, Peoples R China
来源：
MATERIALS LETTERS | 2001年 / 51卷 / 04期
关键词：
Ni50Al20Fe30; superplasticity; intermetallics;
D O I：
10.1016/S0167-577X(01)00316-0
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The high-temperature deformation capacity of a multiphase Ni50Al20Fe30 intermetallic compound. displaying dynamic recrystallization (DRX), is explored in a wide range of testing condition. This intermetallics exhibited superplasticity with a maximum elongation as high as 470% at 1023-1253 K and strain rates of 1.67 x 10(-4) to 3.34 x 10(-3) s(-1). The superplastic deformation mechanism is proposed to be the grain boundary and phase boundary sliding accommodated by dislocation movement and DRX The superplastic fracture results from the interaction of microcrack and cavities. (C) 2001 Elsevier Science B.V. All rights reserved.
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收藏
页码：342 / 346
页数：5
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