High temperature creep behavior of cast Ni base superalloy K44

IMR OpenIR

	High temperature creep behavior of cast Ni base superalloy K44
	Hou, JS ; Zhang, YL ; Guo, JT ; Ji, G ; Zhou, LZ ; Ye, HQ
通讯作者	Guo, JT()
	2004-06-01
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	40 期号:6 页码:579-584
摘要	High temperature tensile creep behaviors of cast nickel-based superalloy K44 in the temperature range of 850-900degreesC and under the applied stress range of 225-380 MPa have been studied. The results indicate that all of the creep curves of test alloys have similar shape: a short primary creep and a dominant accelerated creep stage, and the long accelerated stage is due to the interaction between rafting gamma' particles and dislocations. As the creep strain is a softening stage, the accelerated creep can be approximately described by expression (epsilon) overdot = (epsilon) overdot(min)(1 + c'Deltaepsilon)exp(n'Deltaepsilon). The creep fracture data follow the Monkman-Grant relationship. Cracks originate from the cavities at grain boundary or interdendritic.
关键词	nickel-based superalloy high temperature creep creep fracture
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:000222338500004
出版者	SCIENCE CHINA PRESS
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/81147
通讯作者	Guo, JT
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.PLA Off Harbin Turbine Co Ltd, Harbin 150046, Peoples R China
推荐引用方式 GB/T 7714	Hou, JS,Zhang, YL,Guo, JT,et al. High temperature creep behavior of cast Ni base superalloy K44[J]. ACTA METALLURGICA SINICA,2004,40(6):579-584.
APA	Hou, JS,Zhang, YL,Guo, JT,Ji, G,Zhou, LZ,&Ye, HQ.(2004).High temperature creep behavior of cast Ni base superalloy K44.ACTA METALLURGICA SINICA,40(6),579-584.
MLA	Hou, JS,et al."High temperature creep behavior of cast Ni base superalloy K44".ACTA METALLURGICA SINICA 40.6(2004):579-584.