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Localized dislocation interactions within slip bands and crack initiation in Mg-10Gd-3Y-0.3Zr alloy
He, Chao1,2; Li, Xue1; Liu, Yongjie1,2; Wang, Chong1,2; Zhang, Hong1,2; Li, Lang1,2; Wang, Qingyuan1,3; Shao, Xiaohong4; Chen, Qiang5
Corresponding AuthorLiu, Yongjie(liuyongjie@scu.edu.cn) ; Wang, Qingyuan(wangqy@scu.edu.cn)
2021-09-01
Source PublicationINTERNATIONAL JOURNAL OF FATIGUE
ISSN0142-1123
Volume150Pages:10
AbstractThe 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.
KeywordFatigue crack initiation Slip bands Magnesium alloy Dislocation intensity zone (c plus a) dislocation
Funding OrganizationNational Natural Science Foundation of China ; National Key Research and Development Program of China ; Sichuan University & ZiGong government Support Program
DOI10.1016/j.ijfatigue.2021.106302
Indexed BySCI
Language英语
Funding ProjectNational 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 Research AreaEngineering ; Materials Science
WOS SubjectEngineering, Mechanical ; Materials Science, Multidisciplinary
WOS IDWOS:000663091500002
PublisherELSEVIER SCI LTD
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/160502
Collection中国科学院金属研究所
Corresponding AuthorLiu, Yongjie; Wang, Qingyuan
Affiliation1.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
Recommended Citation
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.
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