Investigation on low cycle fatigue behaviors of the [001] and [011] oriental single crystal superalloy at 760 degrees C

doi:10.1016/j.msea.2018.07.078

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	Investigation on low cycle fatigue behaviors of the [001] and [011] oriental single crystal superalloy at 760 degrees C
	Liu, Liu 1,2; Meng, Jie 2; Liu, Jinlai 2; Zhang, Haifeng 1,3; Sun, Xudong 1; Zhou, Yizhou 2
刊名	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
	2018-09-12
卷号	734 页码:1-6
关键词	Single crystal superalloy Low cycle fatigue Anisotropy Deformation mechanism
ISSN号	0921-5093
DOI	10.1016/j.msea.2018.07.078
通讯作者	Meng, Jie(jmeng@imr.ac.cn)
英文摘要	Low cycle fatigue behaviors of a 3Re Ni-base single crystal superalloy with the [001] and [011] orientations have been investigated. At 760 degrees C, both the [001] and [011] specimens fracture along crystallographic planes. However, the results also indicate a large difference in fatigue deformation behaviors of these two oriented specimens, which is reflected in different deformation mechanisms. For the cyclic stability behavior of the [001] specimens, uneven cross-slip and tangled dislocations and continuous stacking faults cause local stress concentration in the matrix and have an influence on work hardening, while the stress concentration is reduced by dislocation pairs and stacking faults shearing gamma' phases. With respect to the [011] specimens, high density matrix dislocations, parallel dislocations and secondary cracks increase resistance to dislocation movement, resulting in cyclic hardening. We discovered continuous stacking faults that have been rarely reported in the low cycle fatigue. Also, these findings might bring about substantial insights that fatigue fracture and deformation mechanisms are responsible for low cycle fatigue anisotropy at intermediate temperature.
资助项目	National Natural Science Foundation of China[51571196] ; National Natural Science Foundation of China[51671188] ; National Natural Science Foundation of China[5160119] ; Shenyang Science and Technology Project[17-101-2-00]
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000445993900001
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/321006/129600]
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.Northeastern Univ, Sch Mat Sci & Engn, Shenyang 110819, Liaoning, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Superalloys Div, Shenyang 110016, Liaoning, Peoples R China 3.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Liu, Liu,Meng, Jie,Liu, Jinlai,et al. Investigation on low cycle fatigue behaviors of the [001] and [011] oriental single crystal superalloy at 760 degrees C[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2018,734:1-6.
APA	Liu, Liu,Meng, Jie,Liu, Jinlai,Zhang, Haifeng,Sun, Xudong,&Zhou, Yizhou.(2018).Investigation on low cycle fatigue behaviors of the [001] and [011] oriental single crystal superalloy at 760 degrees C.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,734,1-6.
MLA	Liu, Liu,et al."Investigation on low cycle fatigue behaviors of the [001] and [011] oriental single crystal superalloy at 760 degrees C".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 734(2018):1-6.