Knowledge Management System Of Institute of metal research,CAS
Core structures and planar faults associated with < 111 > screw superdislocations in B2 alloys) | |
Yan, J. X.; Zhang, Z. J.; Li, K. Q.; Xia, Z. Y.; Yang, J. B.; Zhang, Z. F. | |
2019-07-01 | |
Source Publication | INTERMETALLICS
![]() |
ISSN | 0966-9795 |
Volume | 110 |
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 |
Indexed By | SCI |
Language | 英语 |
WOS ID | WOS:000471355400001 |
Publisher | ELSEVIER SCI LTD |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.imr.ac.cn/handle/321006/80947 |
Collection | 中国科学院金属研究所 |
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. |
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. |
MLA | Yan, J. X.,et al."Core structures and planar faults associated with < 111 > screw superdislocations in B2 alloys)".INTERMETALLICS 110(2019). |
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