Creep rupture Behavior of K40S alloy at elevated temperatures

IMR OpenIR

	Creep rupture Behavior of K40S alloy at elevated temperatures
	Yang, FM; Sun, XF; Guan, HR; Hu, ZQ
通讯作者	Yang, FM(fuminyang@sohu.com)
	2004-03-01
发表期刊	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN	1005-0302
卷号	20 期号:2 页码:175-179
摘要	Creep testing was conducted on K40S alloy. The detailed creep deformation and fracture mechanisms under constant load were studied. The results show that the stress exponent ranges between 7 and 14.4 at elevated temperature 973similar to1173 K, and that the activation energy is approximately 449.1 kJ/mol. During creep, the grain boundary sliding cut off primary carbides at the boundary, generating the "O" model cracks. The creep failure mode of K40S alloy is transgranular ductile and cracks originate at the primary carbides. A long carbide and matrix interface is often a preferential path for crack propagation. The creep mechanism is discussed in light of the creep microstructure, the stress exponent and the activation energy.
关键词	K40S alloy creep fracture crack propagation
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:000220705300013
出版者	JOURNAL MATER SCI TECHNOL
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/80961
通讯作者	Yang, FM
作者单位	Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Yang, FM,Sun, XF,Guan, HR,et al. Creep rupture Behavior of K40S alloy at elevated temperatures[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2004,20(2):175-179.
APA	Yang, FM,Sun, XF,Guan, HR,&Hu, ZQ.(2004).Creep rupture Behavior of K40S alloy at elevated temperatures.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,20(2),175-179.
MLA	Yang, FM,et al."Creep rupture Behavior of K40S alloy at elevated temperatures".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 20.2(2004):175-179.