Deformation mechanisms of a nickel-based single-crystal superalloy during low-cycle fatigue at different temperatures

被引:52
|
作者
Wang, X. G. [1 ]
Liu, J. L. [1 ]
Jin, T. [1 ]
Sun, X. F. [1 ]
Zhou, Y. Z. [1 ]
Hu, Z. Q. [1 ]
Do, J. H. [2 ]
Choi, B. G. [2 ]
Kim, I. S. [2 ]
Jo, C. Y. [2 ]
机构
[1] Chinese Acad Sci, Inst Met Res, Superalloys Div, Shenyang 110016, Peoples R China
[2] Korea Inst Mat Sci, High Temp Mat Res Grp, Chang Won 641831, Gyeongnam, South Korea
基金
中国国家自然科学基金;
关键词
Low-cycle fatigue; Slip band; Dislocation configuration; Ni-based superalloy; CREEP; BEHAVIORS; PHASE; ROOM;
D O I
10.1016/j.scriptamat.2014.11.026
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Deformation mechanisms of an Ni-based superalloy during low-cycle fatigue at various temperatures were studied. A new configuration of cross-slip dislocation was observed in the gamma matrix during the deformation at 760 and 900 degrees C, which is an important component of the slip band at 900 degrees C. Slip bands with different morphologies were observed at room temperature and 900 degrees C, corresponding to the obvious work-hardening. It was observed that stacking faults spread throughout the gamma/gamma' interface. (C) 2014 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:57 / 60
页数:4
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