Study on fracture behavior of nickel-based single crystal superalloy subjected to high temperature fatigue using digital image correlation

doi:10.1016/j.ijfatigue.2021.106598

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	Study on fracture behavior of nickel-based single crystal superalloy subjected to high temperature fatigue using digital image correlation
	Duan, Q. Y.2; Xue, H. W.2; Yang, Y. H.3; Zhou, Y. Z.3; Xie, H. M.2; He, W.1
刊名	INTERNATIONAL JOURNAL OF FATIGUE
	2022-02-01
卷号	155 页码:16
关键词	High-temperature Anisotropy Fatigue crack closure Crack opening ratio
ISSN号	0142-1123
DOI	10.1016/j.ijfatigue.2021.106598
通讯作者	Xie, H. M.(xiehm@mail.tsinghua.edu.cn) ; He, W.(hewei2008@hnu.edu.cn)
英文摘要	Anisotropic mechanical behavior of nickel-based single crystal superalloy (NBSCS) is studied based on the displacement field near the crack tip during the fatigue crack growth at 980C. A new distortion calibration technique for bi-prism-based single-lens 3D digital image correlation (BSL3DDIC) is proposed to in-situ and online characterize 3D full-field deformation with high precision. Virtual displacement extensometers (VDEs) are arranged from the displacement field for the crack opening displacement (COD) determination. To the best of our knowledge, the effect of VDEs locations on the precision of COD measurement is first theoretically analyzed, and the arrangement of VDEs has been optimized. Noticeably, similar quantitative analyses are conducted to determine crack opening ratio (COR) for crack closure evaluation. Moreover, via fitting full-field displacement data to a theoretical model for anisotropic material, not only mode-I effective stress intensity factor (SIF) expressed as KIeff and mode-II effective SIF (K pi eff), but also theoretical SIF (KItheo), crack opening SIF (KIopen) and crack opening load ratio (COLR) are obtained. Based on these important fatigue parameters, modified Paris' law is used to describe the high-temperature anisotropic crack growth behavior.
资助项目	National Natural Science Foundation of China[12032013] ; National Natural Science Foundation of China[11972209] ; National Natural Science Foundation of China[11802156] ; National Key Research and Development Program of China[2017YFB1103900] ; National Science and Technology Major Project of China[2017-VI-0003-0073]
WOS研究方向	Engineering ; Materials Science
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000789619000001
资助机构	National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Science and Technology Major Project of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/172695]
专题	金属研究所_中国科学院金属研究所
通讯作者	Xie, H. M.; He, W.
作者单位	1.Hunan Univ, Coll Mech & Vehicle Engn, Changsha, Peoples R China 2.Tsinghua Univ, Sch Aerosp Engn, AML, Beijing, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang, Peoples R China
推荐引用方式 GB/T 7714	Duan, Q. Y.,Xue, H. W.,Yang, Y. H.,et al. Study on fracture behavior of nickel-based single crystal superalloy subjected to high temperature fatigue using digital image correlation[J]. INTERNATIONAL JOURNAL OF FATIGUE,2022,155:16.
APA	Duan, Q. Y.,Xue, H. W.,Yang, Y. H.,Zhou, Y. Z.,Xie, H. M.,&He, W..(2022).Study on fracture behavior of nickel-based single crystal superalloy subjected to high temperature fatigue using digital image correlation.INTERNATIONAL JOURNAL OF FATIGUE,155,16.
MLA	Duan, Q. Y.,et al."Study on fracture behavior of nickel-based single crystal superalloy subjected to high temperature fatigue using digital image correlation".INTERNATIONAL JOURNAL OF FATIGUE 155(2022):16.