Effects of rare earth elements on the microstructure and mechanical properties of NiAl-based eutectic alloy

被引：49
|
作者：
Guo, J. T.
Huai, K. W.
Gao, Q.
Ren, W. L.
Li, G. S.
机构：
[1] Chinese Acad Sci, Inst Met Res, Dept Superalloys & Intermet, Shenyang 110016, Peoples R China
[2] Dalian Univ Technol, Dept Mat Engn, Dailian, Peoples R China
来源：
INTERMETALLICS | 2007年 / 15卷 / 5-6期
基金：
中国国家自然科学基金;
关键词：
nickel aluminides; based on NiAl; microalloying; microstructure; mechanical properties at ambient temperature;
D O I：
10.1016/j.intermet.2006.10.020
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The effects of rare earth elements (REEs) (like Y, Ce, Nd and Dy) on the microstructure and mechanical properties of cast NiAl-28Cr-5.5Mo-0.5Hf alloy were investigated. The results suggest that the microstructure of REEs-doped alloys gradually refines with increasing REEs addition and the appropriate addition of REEs can improve the compressive ductility and yield strength at room temperature. In addition, REEs additions increase the elevated temperature strength and deformation ability of the alloys. The elevated temperature compression deformation behavior of Nd-doped alloy can be property described by power-law equation. (c) 2006 Elsevier Ltd. All rights reserved.
引用
收藏
页码：727 / 733
页数：7
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