| Core structures and planar faults associated with < 111 > screw superdislocations in B2 alloys) | |
| Yan, J. X.1,2; Zhang, Z. J.1; Li, K. Q.1,2; Xia, Z. Y.1,2; Yang, J. B.1,2; Zhang, Z. F.1,2 | |
| Corresponding Author | Yang, J. B.(jbyang@imr.ac) ; Zhang, Z. F.(zhfzhang@imr.ac.cn) |
| 2019-07-01 | |
| Source Publication | INTERMETALLICS
 |
| ISSN | 0966-9795 |
| Volume | 110Pages:8 |
| Abstract | The core structures, planar faults, and mobility associated with [111] screw superdislocations are systematically investigated by atomistic simulations using six different EAM potentials in FeAl. The results demonstrate that the core structures of [111] screw superdislocations transfer from two-fold into triple configurations, and the planar faults vary from metastable to unstable states in different FeAl alloys. The energy minimization (EM) approach is provided to quantitatively predict the core structures and planar faults of [111] superdislocations, where the Burgers vectors of partials and the state of planar faults are adjustable to optimize the system energy. Moreover, the consecutive transformation of core structures takes place before the activation of cross-slip under shear stresses at finite temperatures. In this case, the cross-slip mechanism dominated by core transformations is proposed, and it implies that the EM approach could be utilized to evaluate the cross-slip behaviors of super dislocations. |
| Keyword | Molecular dynamics simulation Dislocation geometry and arrangement Planar faults Intermetallics Dislocation structure |
| Funding Organization | Program of One Hundred Talented People of the Chinese Academy of Sciences ; National Natural Science Foundation of China (NSFC) |
| DOI | 10.1016/j.intermet.2019.04.013 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | Program of One Hundred Talented People of the Chinese Academy of Sciences ; National Natural Science Foundation of China (NSFC)[51571198] ; National Natural Science Foundation of China (NSFC)[51771206] ; National Natural Science Foundation of China (NSFC)[51331007] |
| WOS Research Area | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000471355400001 |
| Publisher | ELSEVIER SCI LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/133946 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Yang, J. B.; Zhang, Z. F. |
| Affiliation | 1.Chinese Acad Sci, Inst Met Res, Mat Fatigue & Fracture Div, Shenyang 110016, Liaoning, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China |
| Recommended Citation GB/T 7714 | Yan, J. X.,Zhang, Z. J.,Li, K. Q.,et al. Core structures and planar faults associated with < 111 > screw superdislocations in B2 alloys)[J]. INTERMETALLICS,2019,110:8. |
| APA | Yan, J. X.,Zhang, Z. J.,Li, K. Q.,Xia, Z. Y.,Yang, J. B.,&Zhang, Z. F..(2019).Core structures and planar faults associated with < 111 > screw superdislocations in B2 alloys).INTERMETALLICS,110,8. |
| MLA | Yan, J. X.,et al."Core structures and planar faults associated with < 111 > screw superdislocations in B2 alloys)".INTERMETALLICS 110(2019):8. |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment