Influences of Re on low-cycle fatigue behaviors of single crystal superalloys at intermediate temperature

doi:10.1016/j.jmst.2019.05.026

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	Influences of Re on low-cycle fatigue behaviors of single crystal superalloys at intermediate temperature
	Liu, Liu 1,2; Meng, Jie 1; Liu, Jinlai 1; Zou, Mingke 1; Zhang, Haifeng 3; Sun, Xudong 2; Zhou, Yizhou 1
刊名	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
	2019-09-01
卷号	35 期号:9 页码:1917-1924
关键词	Single crystal superalloys Low-cycle fatigue Deformation behaviors Deformation mechanisms
ISSN号	1005-0302
DOI	10.1016/j.jmst.2019.05.026
通讯作者	Meng, Jie(JMeng@imr.ac.cn)
英文摘要	Low-cycle fatigue behaviors of Ni-base single crystal superalloys containing different Re contents have been investigated at 760 degrees C. During heat treatment, Re retards gamma' phases coarsening and equalizes the distribution of gamma' phases. As Re content increases, fatigue life increases and slip bands distribute more inhomogeneously. Moreover, adding Re not only reduces stacking fault energy of the matrix, but also promotes the element segregation to increase the lattice misfit. However, the larger lattice misfit does not lead to the formation of dislocation networks, but which activates dislocation movement and promotes dislocations cross-slip and climbing movement under high temperature and applied stress. On the other hand, with the addition of Re, cyclic deformation behaviors change from cyclic hardening to cyclic stability, mainly depending on a transformation of deformation mechanisms from slip bands cutting through gamma and gamma phases to stacking faults shearing. (C) 2019 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[51671188] ; National Natural Science Foundation of China[51571196] ; National Natural Science Foundation of China[51601192] ; Shenyang Science and Technology Project[17-101-2-00]
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:000475870600013
资助机构	National Natural Science Foundation of China ; Shenyang Science and Technology Project
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/134613]
专题	金属研究所_中国科学院金属研究所
通讯作者	Meng, Jie
作者单位	1.Chinese Acad Sci, Superalloys Div, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China 2.Northeastern Univ, Key Lab Anisotropy & Texture Mat, Shenyang 110819, Liaoning, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Liu, Liu,Meng, Jie,Liu, Jinlai,et al. Influences of Re on low-cycle fatigue behaviors of single crystal superalloys at intermediate temperature[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2019,35(9):1917-1924.
APA	Liu, Liu.,Meng, Jie.,Liu, Jinlai.,Zou, Mingke.,Zhang, Haifeng.,...&Zhou, Yizhou.(2019).Influences of Re on low-cycle fatigue behaviors of single crystal superalloys at intermediate temperature.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,35(9),1917-1924.
MLA	Liu, Liu,et al."Influences of Re on low-cycle fatigue behaviors of single crystal superalloys at intermediate temperature".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 35.9(2019):1917-1924.