Experimental investigation of a Portevin-Le Chatelier band in Ni-Co-based superalloys in relation to gamma' precipitates at 500 degrees C

doi:10.1016/j.jmst.2020.02.001

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	Experimental investigation of a Portevin-Le Chatelier band in Ni-Co-based superalloys in relation to gamma' precipitates at 500 degrees C
	Liu, Yanke 1; Cai, Yulong 1; Tian, Chenggang 2; Zhang, Guoliang 2; Han, Guoming 3; Fu, Shihua 1,4; Cui, Chuanyong 2; Zhang, Qingchuan 1
刊名	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
	2020-07-15
卷号	49 页码:35-41
关键词	gamma' Precipitate Ni-Co-based superalloy Dynamic strain aging Portevin-Le Chatelier effect Digital image correlation
ISSN号	1005-0302
DOI	10.1016/j.jmst.2020.02.001
通讯作者	Cui, Chuanyong(chycui@imr.ac.cn) ; Zhang, Qingchuan(zhangqc@ustc.edu.cn)
英文摘要	The macroscopically localized deformation behaviors of Ni-Co-based superalloys with different gamma' precipitate content were investigated at 500 degrees C and 1 x 10(-4) s(-1) via an in situ method namely, digital image correlation (DIC). The DIC results showed that the serrated flow of the stress-strain curves was accompanied by localized deformation of the specimens. The fracture morphology was characterized mainly by transgranular fracture with numerous dimples in the low gamma' content alloy, and intergranular fracture with large fracture section in the high gamma' content alloy. The Portevin-Le Chatelier (PLC) effect occurred in the investigated Ni-Co-based superalloys. Furthermore, the localized deformation of the high gamma' content alloy was more severe than that of the low gamma' content alloy, and the band width was slightly larger. Moreover, for the first-time ever, a special propagation feature, namely +/- 60 degrees zigzag bands characterized by head-to-tail connections, was observed in the high gamma' content alloy. (C) 2020 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
资助项目	National Natural Science Foundation of China[11335010] ; National Natural Science Foundation of China[51271174] ; National Natural Science Foundation of China[11802080] ; National Natural Science Foundation of China[11627803] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB22040502]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	JOURNAL MATER SCI TECHNOL
WOS记录号	WOS:000537326300005
资助机构	National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/139189]
专题	金属研究所_中国科学院金属研究所
通讯作者	Cui, Chuanyong; Zhang, Qingchuan
作者单位	1.Univ Sci & Technol China, CAS Key Lab Mech Behav & Design Mat, Hefei 230027, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Superalloy Div, Shenyang 110016, Peoples R China 3.AVIC Commercial Aircraft Engine Co Ltd, Shanghai 201108, Peoples R China 4.Hainan Univ, Haikou 570228, Hainan, Peoples R China
推荐引用方式 GB/T 7714	Liu, Yanke,Cai, Yulong,Tian, Chenggang,et al. Experimental investigation of a Portevin-Le Chatelier band in Ni-Co-based superalloys in relation to gamma' precipitates at 500 degrees C[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2020,49:35-41.
APA	Liu, Yanke.,Cai, Yulong.,Tian, Chenggang.,Zhang, Guoliang.,Han, Guoming.,...&Zhang, Qingchuan.(2020).Experimental investigation of a Portevin-Le Chatelier band in Ni-Co-based superalloys in relation to gamma' precipitates at 500 degrees C.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,49,35-41.
MLA	Liu, Yanke,et al."Experimental investigation of a Portevin-Le Chatelier band in Ni-Co-based superalloys in relation to gamma' precipitates at 500 degrees C".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 49(2020):35-41.