中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Fatigue and creep-fatigue behavior of a nickel-base superalloy at 850 degrees C

文献类型:期刊论文

作者L. J. Chen ; G. Yao ; J. F. Tian ; Z. G. Wang ; H. Y. Zhao
刊名International Journal of Fatigue
出版日期1998
卷号20期号:7页码:543-548
关键词low-cycle fatigue creep-fatigue nickel-base superalloy life prediction low-cycle fatigue high-temperature fracture damage alloy
ISSN号0142-1123
中文摘要Fully reversed total strain-controlled low-cycle fatigue tests with continuously cycling, equal hold in tension and compression, hold in tension or in compression have been conducted at 850 degrees C in air to study fatigue and creep-fatigue behavior of nickel-base alloy GH4049. At higher strain amplitudes, the alloy exhibits cyclic strain hardening followed by softening while a stable cyclic stress response is shown at low strain amplitudes. A significant reduction in fatigue life is observed with hold time in compression or in both tension and compression. The influence of tensile hold on fatigue life is more complicated. The opposite mean stress develops during tensile and compressive hold tests. The degree of work hardening increases during cycling due to introduction of hold time. The SEM analysis of fracture surfaces shows that crack initiation and stage I growth is transgranular, but crack growth in stage II is intergranular. In addition, a linear damage summation method, comprising both creep and fatigue damage, is considered to provide a good correlation of measured life with predicted life. (C) 1998 Elsevier Science Ltd. All rights reserved.
原文出处://WOS:000075214100007
公开日期2012-04-14
源URL[http://ir.imr.ac.cn/handle/321006/37638]  
专题金属研究所_中国科学院金属研究所
推荐引用方式
GB/T 7714
L. J. Chen,G. Yao,J. F. Tian,et al. Fatigue and creep-fatigue behavior of a nickel-base superalloy at 850 degrees C[J]. International Journal of Fatigue,1998,20(7):543-548.
APA L. J. Chen,G. Yao,J. F. Tian,Z. G. Wang,&H. Y. Zhao.(1998).Fatigue and creep-fatigue behavior of a nickel-base superalloy at 850 degrees C.International Journal of Fatigue,20(7),543-548.
MLA L. J. Chen,et al."Fatigue and creep-fatigue behavior of a nickel-base superalloy at 850 degrees C".International Journal of Fatigue 20.7(1998):543-548.

入库方式: OAI收割

来源:金属研究所

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