Low cycle fatigue behavior of K40S cobaltbase superalloy at elevated temperature - I. Fatigue properties
文献类型：期刊论文
| 作者 | Yang, FM; Sun, XF; Guan, HR; Hu, ZQ |
| 刊名 | ACTA METALLURGICA SINICA
 |
| 出版日期 | 2002-10-01 |
| 卷号 | 38期号:10页码:1047-1052 |
| 关键词 | cobalt-base superalloy high temperature low cycle fatigue dislocation |
| ISSN号 | 0412-1961 |
| 通讯作者 | Yang, FM() |
| 英文摘要 | Isothermal cyclic deformation tests were conducted on K40S cobalt-base superalloy with total strain amplitude from +/-0.1% to +/-1.0% at 700 degreesC and 900 degreesC. Correlations between microscopic cyclic deformation and cycle stress response with various microstructural phenomena were established through scanning electron microscopy (SEM) and transmission electron microscopy (TEM), detailing the deformation substructure and carbide precipitation. The results show that K40S alloy possesses high low cycle fatigue resistance in comparison with X-40 alloy. K40S superalloy exhibits cyclic stress response of cyclic hardening at 700 degreesC, and of initial hardening followed by softening at 900 degreesC. In addition, at both temperatures, cyclic hardening during cycle deformation increases with increasing strain amplitude, while the fatigue lifetime decreases. The cyclic stress response behavior can be rationalized based on the mechanisms associated with dislocation-dislocation interactions, dislocation-precipitate (M23C6) interactions and interactions between the solute atoms and the dislocations. |
| WOS研究方向 | Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000179227700008 |
| 出版者 | SCIENCE CHINA PRESS |
| 源URL | [http://ir.imr.ac.cn/handle/321006/115597]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Yang, FM |
| 作者单位 | Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, FM,Sun, XF,Guan, HR,et al. Low cycle fatigue behavior of K40S cobaltbase superalloy at elevated temperature - I. Fatigue properties[J]. ACTA METALLURGICA SINICA,2002,38(10):1047-1052. |
| APA | Yang, FM,Sun, XF,Guan, HR,&Hu, ZQ.(2002).Low cycle fatigue behavior of K40S cobaltbase superalloy at elevated temperature - I. Fatigue properties.ACTA METALLURGICA SINICA,38(10),1047-1052. |
| MLA | Yang, FM,et al."Low cycle fatigue behavior of K40S cobaltbase superalloy at elevated temperature - I. Fatigue properties".ACTA METALLURGICA SINICA 38.10(2002):1047-1052. |
入库方式： OAI收割
来源：金属研究所
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