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 | |
| 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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