Localized dislocation interactions within slip bands and crack initiation in Mg-10Gd-3Y-0.3Zr alloy

doi:10.1016/j.ijfatigue.2021.106302

IMR OpenIR

	Localized dislocation interactions within slip bands and crack initiation in Mg-10Gd-3Y-0.3Zr alloy
	He, Chao 1,2; Li, Xue 1; Liu, Yongjie 1,2; Wang, Chong 1,2; Zhang, Hong 1,2; Li, Lang 1,2; Wang, Qingyuan 1,3; Shao, Xiaohong 4; Chen, Qiang 5
通讯作者	Liu, Yongjie(liuyongjie@scu.edu.cn) ; Wang, Qingyuan(wangqy@scu.edu.cn)
	2021-09-01
发表期刊	INTERNATIONAL JOURNAL OF FATIGUE
ISSN	0142-1123
卷号	150 页码:10
摘要	The underlying low-stress cyclic deformation and associated dislocation activities within the slip bands (SBs) in a rare earth-containing magnesium (RE-Mg) alloy were characterized. The results show that basal slip is the predominant deformation at grain scale, but the gliding of (c + a) dislocation is also visible near grain boundaries to accommodate localized inhomogeneous deformation. The interaction between basal (a) dislocations and nonbasal (c + a) dislocations results in the nucleation of dislocation intensity zones (DIZs), which subsequently hinders the development of the basal slip bands. Therefore, it is suggested that the DIZs contributed to the enhanced high cycle fatigue resistance of RE-Mg alloys.
关键词	Fatigue crack initiation Slip bands Magnesium alloy Dislocation intensity zone (c plus a) dislocation
资助者	National Natural Science Foundation of China ; National Key Research and Development Program of China ; Sichuan University & ZiGong government Support Program
DOI	10.1016/j.ijfatigue.2021.106302
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[12072212] ; National Natural Science Foundation of China[11832007] ; National Key Research and Development Program of China[2018YFE0307104] ; Sichuan University & ZiGong government Support Program[2019-CDZG-4]
WOS研究方向	Engineering ; Materials Science
WOS类目	Engineering, Mechanical ; Materials Science, Multidisciplinary
WOS记录号	WOS:000663091500002
出版者	ELSEVIER SCI LTD
引用统计	被引频次：23[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/321006/160502
专题	中国科学院金属研究所
通讯作者	Liu, Yongjie; Wang, Qingyuan
作者单位	1.Sichuan Univ, Coll Architecture & Environm, Key Lab Deep Earth Sci & Engn, Minist Educ, Chengdu 610065, Peoples R China 2.Sichuan Univ, Key Lab Sichuan Prov, Failure Mech & Engn Disaster Prevent & Mitigat, Chengdu 610065, Peoples R China 3.Chengdu Univ, Sch Architecture & Civil Engn, Chengdu 610106, Peoples R China 4.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 5.Kyushu Univ, Fac Engn, Fatigue & Fracture Mat Lab, Fukuoka 8190395, Japan
推荐引用方式 GB/T 7714	He, Chao,Li, Xue,Liu, Yongjie,et al. Localized dislocation interactions within slip bands and crack initiation in Mg-10Gd-3Y-0.3Zr alloy[J]. INTERNATIONAL JOURNAL OF FATIGUE,2021,150:10.
APA	He, Chao.,Li, Xue.,Liu, Yongjie.,Wang, Chong.,Zhang, Hong.,...&Chen, Qiang.(2021).Localized dislocation interactions within slip bands and crack initiation in Mg-10Gd-3Y-0.3Zr alloy.INTERNATIONAL JOURNAL OF FATIGUE,150,10.
MLA	He, Chao,et al."Localized dislocation interactions within slip bands and crack initiation in Mg-10Gd-3Y-0.3Zr alloy".INTERNATIONAL JOURNAL OF FATIGUE 150(2021):10.