IMR OpenIR
Mechanism transition of cross slip with stress and temperature in face-centered cubic metals
Li, K. Q.1,2; Zhang, Z. J.1; Yan, J. X.1,2; Yang, J. B.1,2; Zhang, Z. F.1,2
Corresponding AuthorYang, J. B.(ybyang@imr.ac.cn) ; Zhang, Z. F.(zhfzhang@imr.ac.cn)
2020-11-15
Source PublicationJOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN1005-0302
Volume57Pages:159-171
AbstractA < 110 >/2 screw dislocation is commonly dissociated into two < 112 >/6 Shockley partial dislocations on {111} planes in face-centered cubic metals. As the two partials are not purely screw, different mechanisms of cross-slip could take place, depending on the stacking fault energy, applied stress and temperature. It is crucial to classify the mechanisms of cross-slip because each mechanism possesses its own reaction path with a special activation process. In this work, molecular dynamics simulations have been performed systematically to explore the cross-slip mechanism under different stresses and temperatures in three different metals Ag, Cu and Ni that have different stacking fault energies of 17.8, 44.4 and 126.8 mJ/m(2), respectively. In Ag and Cu with low stacking fault energy, it is observed that the cross-slip mechanism of screw dislocations changes from the Fleischer obtuse angle (FLOA), to the Friedel-Escaig (FE), and then to the FL acute angle (FLAA) at low temperatures, with increasing the applied stress. However, when the temperature increases, the FE mechanism gradually becomes dominant, while the FLAA only occurs at the high stress region. In particular, the FLOA has not been observed in Ni because of its high stacking fault energy. (C) 2020 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
KeywordCross-slip Molecular dynamics simulation Face-centered cubic metals Stacking fault energy
Funding OrganizationProgram of OneHundred Talented People of the Chinese Academy of Sciences ; National Natural Science Foundation of China
DOI10.1016/j.jmst.2020.04.035
Indexed BySCI
Language英语
Funding ProjectProgram of OneHundred Talented People of the Chinese Academy of Sciences ; National Natural Science Foundation of China[51871223] ; National Natural Science Foundation of China[51771206] ; National Natural Science Foundation of China[51790482]
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000572537200016
PublisherJOURNAL MATER SCI TECHNOL
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/140624
Collection中国科学院金属研究所
Corresponding AuthorYang, J. B.; Zhang, Z. F.
Affiliation1.Chinese Acad Sci, Inst Met Res, Lab Fatigue & Fracture Mat, Shenyang 110016, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Li, K. Q.,Zhang, Z. J.,Yan, J. X.,et al. Mechanism transition of cross slip with stress and temperature in face-centered cubic metals[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2020,57:159-171.
APA Li, K. Q.,Zhang, Z. J.,Yan, J. X.,Yang, J. B.,&Zhang, Z. F..(2020).Mechanism transition of cross slip with stress and temperature in face-centered cubic metals.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,57,159-171.
MLA Li, K. Q.,et al."Mechanism transition of cross slip with stress and temperature in face-centered cubic metals".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 57(2020):159-171.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Li, K. Q.]'s Articles
[Zhang, Z. J.]'s Articles
[Yan, J. X.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Li, K. Q.]'s Articles
[Zhang, Z. J.]'s Articles
[Yan, J. X.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Li, K. Q.]'s Articles
[Zhang, Z. J.]'s Articles
[Yan, J. X.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.