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Atomic-resolution studies on reactions between basal dislocations and {10(1)over-bar2} coherent twin boundaries in a Mg alloy
Su, Huhu1; Zhou, Xinzhe1; Zheng, Shijian2; Ye, Hengqiang1,3; Yang, Zhiqing1
Corresponding AuthorYang, Zhiqing(yangzq@imr.ac.cn)
2021-03-10
Source PublicationJOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN1005-0302
Volume66Pages:28-35
AbstractReactions between basal < a(60)> dislocations and {10 (1) over bar2} coherent twin boundaries (CTBs) in a Mg alloy were studied with atomic resolution. Individual dislocation-CTB reactions produced steps with residual dislocations and multiple twinning dislocations (TDs) gliding away, consequently resulting in TB migration. Reactions between {10 (1) over bar2} CTBs and low-angle grain boundaries composed of basal < a(60)> dislocations created either basal-prismatic/prismatic-basal interfaces or asymmetric tilt grain boundaries, depending on whether TDs gliding away or not. Not only the emission of TDs by dislocation-TB reactions may drive TB migration, but also the resultant steps or facets along TBs can act as TD sources to facilitate TB migration. Our results indicate that roughness or severe loss of local coherency induced by dislocation-TB reactions does not intrinsically impede TB migration in Mg alloys. Dislocation-TB reactions may provide another feasible strategy to improve the ductility of Mg alloys, in addition to other techniques like grain refinement and texture modification. (C) 2021 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
KeywordMg alloys Dislocation Twin boundary Migration Plastic deformation
Funding OrganizationNational Natural Science Foundation of China ; Key Research Program of Frontier Sciences, CAS
DOI10.1016/j.jmst.2020.06.017
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[51971225] ; National Natural Science Foundation of China[51771202] ; National Natural Science Foundation of China[51771201] ; Key Research Program of Frontier Sciences, CAS[QYZDY-SSW-JSC027]
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000610200200004
PublisherJOURNAL MATER SCI TECHNOL
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/159106
Collection中国科学院金属研究所
Corresponding AuthorYang, Zhiqing
Affiliation1.Univ Sci & Technol China, Chinese Acad Sci, Sch Mat Sci & Engn, Shenyang Natl Lab Mat Sci,Inst Met Res, Shenyang 110016, Peoples R China
2.Hebei Univ Technol, State Key Lab Reliabil & Intelligence Elect Equip, Tianjin 300130, Peoples R China
3.Jihua Lab, Foshan 528251, Peoples R China
Recommended Citation
GB/T 7714
Su, Huhu,Zhou, Xinzhe,Zheng, Shijian,et al. Atomic-resolution studies on reactions between basal dislocations and {10(1)over-bar2} coherent twin boundaries in a Mg alloy[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2021,66:28-35.
APA Su, Huhu,Zhou, Xinzhe,Zheng, Shijian,Ye, Hengqiang,&Yang, Zhiqing.(2021).Atomic-resolution studies on reactions between basal dislocations and {10(1)over-bar2} coherent twin boundaries in a Mg alloy.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,66,28-35.
MLA Su, Huhu,et al."Atomic-resolution studies on reactions between basal dislocations and {10(1)over-bar2} coherent twin boundaries in a Mg alloy".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 66(2021):28-35.
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