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

IMR OpenIR

	Experimental investigation of a Portevin-Le Chatelier band in Ni-Co-based superalloys in relation to gamma' precipitates at 500 degrees C
	Liu, Yanke; Cai, Yulong; Tian, Chenggang; Zhang, Guoliang; Han, Guoming; Fu, Shihua; Cui, Chuanyong; Zhang, Qingchuan
	2020-07-15
发表期刊	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
卷号	49 页码:35-41
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.
DOI	10.1016/j.jmst.2020.02.001
WOS记录号	WOS:000537326300005
引用统计	被引频次：14[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/321006/155687
专题	中国科学院金属研究所
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.