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

页码：228 / 232

页数：5

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