Elevated temperature compressive behavior of Nb-22Ti-16Si-7Cr-3Al-3Ta-2Hf alloy with minor Ho addition

被引：4
|
作者：
Tian, Y. X. [1 ]
Guo, J. T. [1 ]
Cheng, G. A. [2 ]
Sheng, L. Y. [1 ]
Zhou, L. Z. [1 ]
He, L. L. [2 ]
Ye, H. Q. [2 ]
机构：
[1] Chinese Acad Sci, Inst Met Res, Superalloy Div, Shenyang 110016, Peoples R China
[2] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
来源：
INTERNATIONAL JOURNAL OF MATERIALS RESEARCH | 2008年 / 99卷 / 02期
关键词：
intermetallics; microstructure; mechanical properties; Ho;
D O I：
10.3139/146.101628
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The microstructure and elevated temperature compressive behavior of Nb-22Ti-16Si-7Cr-3Al-3Ta-2Hf alloys with and without 0.1 at.% Ho were investigated by using scanning electron microscopy, X-ray diffraction, transmission electron microscopy, and compression tests. The results show that the addition of 0.1 at.% Ho to the matrix alloy significantly increases its elevated temperature strength at a higher strain rate, while the strengthening effect becomes weak at a lower strain rate. The elevated temperature compressive deformation behavior of the Ho-doped alloy can be adequately described by the power-law equation. The mechanism of Ho addition on elevated-temperature compressive behavior of the alloy is discussed in the paper.
引用
收藏
页码：228 / 232
页数：5
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