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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
刊名	Rare metals
	2008-10-01
卷号	27期号:5页码:526-530
关键词	Single crystal superalloy Thermal fatigue Crack growth behavior Dendrite orientation
ISSN号	1001-0521
通讯作者	Liu yuan(yuanliu@imr.ac.cn)
英文摘要	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.
WOS关键词	PROPAGATION
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	NONFERROUS METALS SOC CHINA
WOS记录号	WOS:000260547100016
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2389689
专题	中国科学院大学
通讯作者	Liu Yuan
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
推荐引用方式 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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