Dissociation of Tilt Dislocation Walls in Au
Geng, Yu-Juan1,2; Wang, Chun-Yang3; Yan, Jing-Xin1,4; Zhang, Zhen-Jun1; Yang, Hua-Jie1; Yang, Jin-Bo1,2; Du, Kui3; Zhang, Zhe-Feng1,2
Corresponding AuthorYang, Jin-Bo( ; Du, Kui( ; Zhang, Zhe-Feng(
AbstractThe movement or dissociation of dislocations is significantly important for better understanding the plastic deformation mechanisms and mechanical properties of metals. It is commonly believed that a dislocation < 110 > /2 in Au is easy to dissociate into a pair of Shockley partial dislocations < 112 > /6 due to low stacking fault energy (SFE). Contrary to this prevailing perception, the present atomistic modeling demonstrates that this reaction could be completely suppressed when dislocations < 110 > /2 are grouped into tilt walls, consistent with our experimental observations. Such phenomenon is actually the extreme case accompanying with the variation of Burgers vectors of partials with tilt angle, as revealed by a series of simulations, from which it is clearly seen that the Burgers vectors of partials deviate considerably from that of Shockley partials, enormously depending on the tilt angle. Our findings could facilitate a better understanding on many phenomena and properties of face-centered cubic metals (FCC).
KeywordDislocation Tilt wall Stacking fault Dissociation Grain boundary
Funding OrganizationNational Natural Science Foundation of China ; K.C. Wong Education Foundation
Indexed BySCI
Funding ProjectNational Natural Science Foundation of China[52071316] ; National Natural Science Foundation of China[51771206] ; National Natural Science Foundation of China[51571198] ; K.C. Wong Education Foundation[GJTD-2020-09]
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000798472500002
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Document Type期刊论文
Corresponding AuthorYang, Jin-Bo; Du, Kui; Zhang, Zhe-Feng
Affiliation1.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
4.Chongqing Jiaotong Univ, Sch Mat Sci & Engn, Chongqing 400074, Peoples R China
Recommended Citation
GB/T 7714
Geng, Yu-Juan,Wang, Chun-Yang,Yan, Jing-Xin,et al. Dissociation of Tilt Dislocation Walls in Au[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2022:6.
APA Geng, Yu-Juan.,Wang, Chun-Yang.,Yan, Jing-Xin.,Zhang, Zhen-Jun.,Yang, Hua-Jie.,...&Zhang, Zhe-Feng.(2022).Dissociation of Tilt Dislocation Walls in Au.ACTA METALLURGICA SINICA-ENGLISH LETTERS,6.
MLA Geng, Yu-Juan,et al."Dissociation of Tilt Dislocation Walls in Au".ACTA METALLURGICA SINICA-ENGLISH LETTERS (2022):6.
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