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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 AuthorLiu Yuan(yuanliu@imr.ac.cn)
2008-10-01
Source PublicationRARE METALS
ISSN1001-0521
Volume27Issue:5Pages:526-530
AbstractThe 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.
Keywordsingle crystal superalloy thermal fatigue crack growth behavior dendrite orientation
Indexed BySCI
Language英语
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000260547100016
PublisherNONFERROUS METALS SOC CHINA
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/94625
Collection中国科学院金属研究所
Corresponding AuthorLiu Yuan
Affiliation1.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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