| Crack, growth behavior of SRR99 single crystal superalloy under thermal fatigue | |
| Liu Yuan1,2; Yu Jinjiang1; Xu Yan1; Sun Xiaofeng1; Guan Hengrong1; Hu Zhuangqi1 | |
| Corresponding Author | Liu Yuan(yuanliu@imr.ac.cn) |
| 2008-10-01 | |
| Source Publication | RARE METALS
 |
| ISSN | 1001-0521 |
| Volume | 27Issue:5Pages:526-530 |
| Abstract | The thermal fatigue behavior of a single crystal superalloy SRR99 was investigated. Specimens with V-type notch were tested at the peak temperatures of 900, 1000, and 1100 degrees C. The crack growth curves as a function of the number of cycles were plotted. With the increase of peak temperature, the crack initiation life was shortened dramatically. Through optical microscopy (OM) and scanning electron microscopy (SEM) observation, it was found that multiple small cracks nucleated at the notch tip region but only one or two of them continued to develop in the following thermal cycles. The primary cracks generally propagated along a preferential direction. Microstructure changes after thermal fatigue were also discussed on the basis of SEM observation. |
| Keyword | single crystal superalloy thermal fatigue crack growth behavior dendrite orientation |
| Indexed By | SCI |
| Language | 英语 |
| WOS Research Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000260547100016 |
| Publisher | NONFERROUS METALS SOC CHINA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/94625 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Liu Yuan |
| Affiliation | 1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China |
| Recommended Citation GB/T 7714 | Liu Yuan,Yu Jinjiang,Xu Yan,et al. Crack, growth behavior of SRR99 single crystal superalloy under thermal fatigue[J]. RARE METALS,2008,27(5):526-530. |
| APA | Liu Yuan,Yu Jinjiang,Xu Yan,Sun Xiaofeng,Guan Hengrong,&Hu Zhuangqi.(2008).Crack, growth behavior of SRR99 single crystal superalloy under thermal fatigue.RARE METALS,27(5),526-530. |
| MLA | Liu Yuan,et al."Crack, growth behavior of SRR99 single crystal superalloy under thermal fatigue".RARE METALS 27.5(2008):526-530. |
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