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| Dislocation dipole-induced strengthening in intermetallic TiAl | |
| He, Y; Liu, Z; Zhou, G; Wang, H; Bai, CG; Rodney, D; Appel, F; Xu, DS; Yang, R; Wang, H (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China. | |
| 2018-01-15 | |
| Source Publication | SCRIPTA MATERIALIA
 |
| ISSN | 1359-6462 |
| Volume | 143Pages:98-102 |
| Abstract | Narrow dislocation dipoles in intermetallic TiAl are systematically investigated by atomic-scale simulations and electron microscopy. The formation energy of narrow dipolar configurations and the activation energy during their evolution are unraveled. We show that faulted dipoles can be stable over experimental timescales, in full agreement with high-resolution observations. Such stable atomic-scale structures provide a strengthening effect significantly larger than the elastic prediction, which deeply influences plasticity in TiAl. (C) 2017 Acta Materialia Inc Published by Elsevier Ltd. All rights reserved.; Narrow dislocation dipoles in intermetallic TiAl are systematically investigated by atomic-scale simulations and electron microscopy. The formation energy of narrow dipolar configurations and the activation energy during their evolution are unraveled. We show that faulted dipoles can be stable over experimental timescales, in full agreement with high-resolution observations. Such stable atomic-scale structures provide a strengthening effect significantly larger than the elastic prediction, which deeply influences plasticity in TiAl. (C) 2017 Acta Materialia Inc Published by Elsevier Ltd. All rights reserved. |
| description.department | [he, yan ; liu, zhao ; zhou, gang ; wang, hao ; bai, chunguang ; xu, dongsheng ; yang, rui] chinese acad sci, inst met res, shenyang 110016, peoples r china ; [he, yan] shenyang normal univ, coll phys & technol, shenyang 110034, liaoning, peoples r china ; [zhou, gang] dalian univ technol, sch mat sci & engn, dalian 116024, peoples r china ; [rodney, david] univ lyon 1, inst lumiere matiere, cnrs, umr 5306, f-69622 villeurbanne, france ; [appel, fritz] helmholtz zentrum geesthacht, inst mat res, d-21502 geesthacht, germany |
| Keyword | Activation-relaxation Technique Characterizing Faulted Dipoles Atomistic Simulations Titanium Aluminides Deformation Transformation Dynamics Tensile Alloys |
| Subject Area | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| Funding Organization | National Key Research and Development Program of China [2016YFB0701304]; Natural Science Foundation of China [51671195]; Youth Innovation Promotion Association of Chinese Academy of Sciences [2015151] |
| Indexed By | SCI |
| Language | 英语 |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/79582 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Wang, H (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China. |
| Recommended Citation GB/T 7714 | He, Y,Liu, Z,Zhou, G,et al. Dislocation dipole-induced strengthening in intermetallic TiAl[J]. SCRIPTA MATERIALIA,2018,143:98-102. |
| APA | He, Y.,Liu, Z.,Zhou, G.,Wang, H.,Bai, CG.,...&Wang, H .(2018).Dislocation dipole-induced strengthening in intermetallic TiAl.SCRIPTA MATERIALIA,143,98-102. |
| MLA | He, Y,et al."Dislocation dipole-induced strengthening in intermetallic TiAl".SCRIPTA MATERIALIA 143(2018):98-102. |
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