Temperature dependence of tensile behavior of Ni-based superalloy M951

被引：79

作者：

Lian, Z. W. ^{[1
]}

Yu, J. J. ^{[1
]}

Sun, X. F. ^{[1
]}

Guan, H. R. ^{[1
]}

Hu, Z. Q. ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2008年 / 489卷 / 1-2期

关键词：

M951; alloy; tensile strength; ductility; dislocation;

D O I：

10.1016/j.msea.2008.02.013

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Tensile properties of M951 alloy are shown to be significantly dependent on temperatures in this study. Like in other superalloys, the yield and tensile strengths decreased slightly between room temperature and 600 degrees C, then both strengths showed peak values at intermediate temperatures, and both decreased sharply above 850 degrees C. The elongation fluctuated with temperature with its minimum at 800 degrees C. The TEM observations showed that at low temperature the dominant deformation mechanism was gamma' shearing by dislocation pairs and slip bands. At high temperature, the deformation was dominated by gamma' by-pass. At intermediate temperature it showed a transition from gamma' shearing to by-passing. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：227 / 233

页数：7

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