Low cycle fatigue properties and fracture mechanisms of M38 nickel base superalloy at high temperature

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	Low cycle fatigue properties and fracture mechanisms of M38 nickel base superalloy at high temperature
	Huang Zhiwei ; Yuan Fuhe ; Wang Zhongguang ; Zhu Shijie ; Wang Fagang
通讯作者	Wang Zhongguang(zhgwang@imr.ac.cn)
	2007-10-01
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	43 期号:10 页码:1025-1030
摘要	Low cycle fatigue tests of the cast nickel base superalloy M38 have been conducted at 900 degrees C in air under fully reversed total strain control, strain ratio of -1 and the strain rate of 1 X 10(-2) s(-1). After failure, the fracture surfaces and longitudinal sections of the specimens were examined using SEM. Experimental results revealed that the fatigue property of M38 is similar to that of IN738LC. At high strain amplitudes, crack tended to initiate at the stress concentration sites such as surface carbides. While at low strain amplitudes, oxidation played an important role on crack initiation. The Cr-rich surface connected grain boundaries and Ti-rich surface carbides were observed to be favorable crack initiation sites. Under all strain amplitudes,,,the crack propagation modes were transgranular.
关键词	nickel base superalloy high temperature low cycle fatigue fracture mechanism crack initiation and propagation
收录类别	SCI
语种	英语
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000250991200004
出版者	SCIENCE PRESS
引用统计	被引频次：6[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/90665
专题	中国科学院金属研究所
通讯作者	Wang Zhongguang
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Dalian Univ Technol, Sch Mat Sci & Engn, Dalian 116023, Peoples R China 3.Fukuoka Inst Technol, Dept Intelligent Mech Engn, Fukuoka, Japan
推荐引用方式 GB/T 7714	Huang Zhiwei,Yuan Fuhe,Wang Zhongguang,et al. Low cycle fatigue properties and fracture mechanisms of M38 nickel base superalloy at high temperature[J]. ACTA METALLURGICA SINICA,2007,43(10):1025-1030.
APA	Huang Zhiwei,Yuan Fuhe,Wang Zhongguang,Zhu Shijie,&Wang Fagang.(2007).Low cycle fatigue properties and fracture mechanisms of M38 nickel base superalloy at high temperature.ACTA METALLURGICA SINICA,43(10),1025-1030.
MLA	Huang Zhiwei,et al."Low cycle fatigue properties and fracture mechanisms of M38 nickel base superalloy at high temperature".ACTA METALLURGICA SINICA 43.10(2007):1025-1030.