Effects of Co content on tensile properties and deformation behaviors of Ni-based disk superalloys at different temperatures

IMR OpenIR

	Effects of Co content on tensile properties and deformation behaviors of Ni-based disk superalloys at different temperatures
	Tian, Chenggang; Han, Guoming; Cui, Chuanyong; Sun, Xiaofeng; chycui@imr.ac.cn
	2015
发表期刊	MATERIALS & DESIGN
ISSN	0261-3069
卷号	88 页码:123-131
摘要	Tensile properties of three Ni-based disk superalloys with 5 wt.%, 15 wt.% and 23 wt.% Co contents were investigated from room temperature (RT) to 725 degrees C with a constant strain rate of 3 x 10(-4) s(-1). It is found that addition of Co enhances the yield strength and the strain hardening capacity of the alloy in the studied temperature regime. It is due to the following two reasons: i.e. the interactions between a large volume fraction of fine secondary and tertiary gamma' precipitates with the dislocations in slip bands at lower temperatures and the formation of deformation microtwins at higher temperatures. However, the formation of deformation microtwins in the high Co-containing content alloy sharply decreases the ductility at higher temperatures. (C) 2015 Elsevier Ltd. All rights reserved.
部门归属	[tian, chenggang ; han, guoming ; cui, chuanyong ; sun, xiaofeng] chinese acad sci, inst met res, superalloys div, shenyang 110016, peoples r china
关键词	Superalloys Co Tensile Behavior Isolated Faults Microtwins
资助者	National Basic Research Program (973 Program) of China [2010CB631206]; National Natural Science Foundation of China (NSFC) [51171179, 51128101, 51271174 51331005, U1037601, 11332010]
收录类别	sci
语种	英语
WOS记录号	WOS:000364257300016
引用统计	被引频次：69[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/321006/74782
专题	中国科学院金属研究所
通讯作者	chycui@imr.ac.cn
推荐引用方式 GB/T 7714	Tian, Chenggang,Han, Guoming,Cui, Chuanyong,et al. Effects of Co content on tensile properties and deformation behaviors of Ni-based disk superalloys at different temperatures[J]. MATERIALS & DESIGN,2015,88:123-131.
APA	Tian, Chenggang,Han, Guoming,Cui, Chuanyong,Sun, Xiaofeng,&chycui@imr.ac.cn.(2015).Effects of Co content on tensile properties and deformation behaviors of Ni-based disk superalloys at different temperatures.MATERIALS & DESIGN,88,123-131.
MLA	Tian, Chenggang,et al."Effects of Co content on tensile properties and deformation behaviors of Ni-based disk superalloys at different temperatures".MATERIALS & DESIGN 88(2015):123-131.