Fatigue crack propagation behavior of K40S cobalt-base superalloy at elevated temperature
文献类型：期刊论文
| 作者 | F. M. Yang ; X. F. Sun ; H. R. Guan ; W. L. Deng ; F. Liu ; Z. Q. Hu |
| 刊名 | Transactions of Nonferrous Metals Society of China
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| 出版日期 | 2003 |
| 卷号 | 13期号:1页码:50-54 |
| 关键词 | cobalt-base superalloy fatigue crack propagation fatigue threshold ductility growth-behavior alloy steel |
| ISSN号 | 1003-6326 |
| 中文摘要 | Fatigue crack propagation behavior of K40S cobalt-base superalloy under ambient atmosphere at 700 degreesC and 900 degreesC was investigated. The detailed fatigue crack propagation and fracture mechanism under the alternating loads were studied. The results show that, there is a defined threshold for K40S alloy at elevated temperatures. The fatigue threshold is 23. 9 MPa . m(1/2) at 700 degreesC and 12 MPa . m(1/2) at 900 V. The significant decrease of the threshold with increasing temperature is associated with the oxidation induced embrittlement at crack tip. Observation on the fatigue fracture surfaces indicates a ductile fracture mechanism related to the fatigue crack growth. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/36104]  |
| 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 | F. M. Yang,X. F. Sun,H. R. Guan,et al. Fatigue crack propagation behavior of K40S cobalt-base superalloy at elevated temperature[J]. Transactions of Nonferrous Metals Society of China,2003,13(1):50-54. |
| APA | F. M. Yang,X. F. Sun,H. R. Guan,W. L. Deng,F. Liu,&Z. Q. Hu.(2003).Fatigue crack propagation behavior of K40S cobalt-base superalloy at elevated temperature.Transactions of Nonferrous Metals Society of China,13(1),50-54. |
| MLA | F. M. Yang,et al."Fatigue crack propagation behavior of K40S cobalt-base superalloy at elevated temperature".Transactions of Nonferrous Metals Society of China 13.1(2003):50-54. |
入库方式： OAI收割
来源：金属研究所
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