Cross-slip mechanisms of < 111 > screw superdislocations in FeAl
文献类型：期刊论文
| 作者 | Yan, J. X.1,2; Zhang, Z. J.1; Li, K. Q.1,2; Yang, J. B.1,2; Zhang, Z. F.1,2 |
| 刊名 | COMPUTATIONAL MATERIALS SCIENCE
 |
| 出版日期 | 2021-03-01 |
| 卷号 | 189页码:10 |
| 关键词 | Molecular dynamics simulations Dislocations and disclinations Cross-slip High-pressure Intermetallics |
| ISSN号 | 0927-0256 |
| DOI | 10.1016/j.commatsci.2020.110261 |
| 通讯作者 | Yang, J. B.(jbyang@imr.ac.cn) ; Zhang, Z. F.(zhfzhang@imr.ac.cn) |
| 英文摘要 | The evolution of the core structure and the cross-slip behavior of a screw [111] superdislocation are investigated by molecular dynamics simulations at external pressures and shear stresses in FeAl with the B2 structure. The result reveals that the transformation between different core configurations generally determines the cross-slip behavior of a dissociated superdislocation after the application of pressures and shear stresses. In terms of the core transformation, two novel cross-slip mechanisms are provided for a dissociated superdislocation. Furthermore, a numerical calculation method is proposed to quantitatively assess the critical shear stress of the core transformation and cross-slip at distinct pressures, the result of which shows a great agreement with the simulation results. In addition, the influence of applied stresses on the competition between the glide and cross-slip behaviors of a dissociated superdislocation is discussed. It shows that the numerical calculation can advance the understanding for the dependence of the core configuration and the motion of dissociated superdislocations on applied pressures and shear stresses. |
| 资助项目 | National Natural Science Foundation of China (NSFC)[51571198] ; National Natural Science Foundation of China (NSFC)[51771206] |
| WOS研究方向 | Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000618925400001 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China (NSFC) |
| 源URL | [http://ir.imr.ac.cn/handle/321006/161313]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Yang, J. B.; Zhang, Z. F. |
| 作者单位 | 1.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yan, J. X.,Zhang, Z. J.,Li, K. Q.,et al. Cross-slip mechanisms of < 111 > screw superdislocations in FeAl[J]. COMPUTATIONAL MATERIALS SCIENCE,2021,189:10. |
| APA | Yan, J. X.,Zhang, Z. J.,Li, K. Q.,Yang, J. B.,&Zhang, Z. F..(2021).Cross-slip mechanisms of < 111 > screw superdislocations in FeAl.COMPUTATIONAL MATERIALS SCIENCE,189,10. |
| MLA | Yan, J. X.,et al."Cross-slip mechanisms of < 111 > screw superdislocations in FeAl".COMPUTATIONAL MATERIALS SCIENCE 189(2021):10. |
入库方式： OAI收割
来源：金属研究所
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