Microstructures and creep behavior of a directionally solidified NiAl-Fe(Nb) multiphase intermetallic alloy

被引：0
|
作者：
Qi, YH [1 ]
Guo, JT [1 ]
Cui, CY [1 ]
机构：
[1] Chinese Acad Sci, Met Res Inst, Dept Superalloys, Shenyang 110016, Peoples R China
来源：
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY | 2003年 / 19卷 / 01期
关键词：
NiAl; multiphase intermetallic alloy; microstructure; creep;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The microstructure and creep behavior of a DS NiAl-Fe(Nb) multiphase intermetallic alloy have been investigated. This alloy exhibits dendritic structure, in which dendritic arm is beta-(Ni,Fe)(Fe,Al) phase surrounded by interdendritic region of gamma'/gamma phase. The results of the creep test indicated that all of the creep curves have similar characteristic, which is a short primary creep stage and a dominant steady state creep stage, and the creep strain ranges from 18% to 52%. The apparent stress exponent and the apparent activation energy were analyzed and discussed. The. mechanism of the creep deformation was also analyzed by the observation of TEM.
引用
收藏
页码：59 / 62
页数：4
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