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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
Source PublicationMATERIALS & DESIGN
ISSN0261-3069
Volume88Pages:123-131
AbstractTensile 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.
description.department[tian, chenggang ; han, guoming ; cui, chuanyong ; sun, xiaofeng] chinese acad sci, inst met res, superalloys div, shenyang 110016, peoples r china
KeywordSuperalloys Co Tensile Behavior Isolated Faults Microtwins
Funding OrganizationNational Basic Research Program (973 Program) of China [2010CB631206]; National Natural Science Foundation of China (NSFC) [51171179, 51128101, 51271174 51331005, U1037601, 11332010]
Indexed Bysci
Language英语
WOS IDWOS:000364257300016
Citation statistics
Cited Times:33[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/74782
Collection中国科学院金属研究所
Corresponding Authorchycui@imr.ac.cn
Recommended Citation
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.
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