Studies of high-temperature notch fatigue property and fracture of a directional solidified Co-base superalloy

IMR OpenIR

	Studies of high-temperature notch fatigue property and fracture of a directional solidified Co-base superalloy
	Jiang, WH; Yao, XD; Guan, HR; Hu, ZQ
通讯作者	Jiang, WH()
	1998-12-01
发表期刊	RARE METAL MATERIALS AND ENGINEERING
ISSN	1002-185X
卷号	27 期号:6 页码:340-343
摘要	The notch fatigue behaviours of a directionally solidified Co - base superalloy at 700 degrees C and 900 degrees C in air have been investigated and the fracture surfaces have been observed using SEM. The results show that the alloy possesses a high notch fatigue resistance, and that the notch fatigue limits at 700 degrees C and 900 degrees C are 285 MPa and 203 MPa, respectively. The alloy exhibits low notch sensitivity(about 0.15). Ar 700 degrees C, a fatigue crack propagates along the {111} slip plane, while at 900 degrees C, under the effect of a cyclic stress and environmental oxidization, the crack grows initially along the {001} cleavage plane and then propagates with a striate made. The high notch fatigue resistance of the alloy is attributed to its peculiar microstructure and excellent static mechanical properties, especially high ductility.
关键词	directional solidification Co-base superalloy notch fatigue property fractograph
收录类别	SCI
语种	英语
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000078056700006
出版者	NORTHWEST INST NONFERROUS METAL RESEARCH
引用统计	被引频次：7[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/321006/107721
专题	中国科学院金属研究所
通讯作者	Jiang, WH
作者单位	Chinese Acad Sci, Inst Met Res, Dept 6, Shenyang 110015, Peoples R China
推荐引用方式 GB/T 7714	Jiang, WH,Yao, XD,Guan, HR,et al. Studies of high-temperature notch fatigue property and fracture of a directional solidified Co-base superalloy[J]. RARE METAL MATERIALS AND ENGINEERING,1998,27(6):340-343.
APA	Jiang, WH,Yao, XD,Guan, HR,&Hu, ZQ.(1998).Studies of high-temperature notch fatigue property and fracture of a directional solidified Co-base superalloy.RARE METAL MATERIALS AND ENGINEERING,27(6),340-343.
MLA	Jiang, WH,et al."Studies of high-temperature notch fatigue property and fracture of a directional solidified Co-base superalloy".RARE METAL MATERIALS AND ENGINEERING 27.6(1998):340-343.