| Effects of pressure on the generalized stacking fault energy and twinning propensity of face-centered cubic metals | |
| Yan, J. X.1,2; Zhang, Z. J.1; Yu, H.1,3,4; Li, K. Q.1,2; Hu, Q. M.1,2; Yang, J. B.1,2; Zhang, Z. F.1,2 | |
| Corresponding Author | Hu, Q. M.(qmhu@imr.ac.cn) ; Yang, J. B.(jbyang@imr.ac.cn) ; Zhang, Z. F.(zhfzhang@imr.ac.cn) |
| 2021-06-15 | |
| Source Publication | JOURNAL OF ALLOYS AND COMPOUNDS
 |
| ISSN | 0925-8388 |
| Volume | 866Pages:12 |
| Abstract | The effects of pressure on the generalized stacking fault energies (GSFE), core structure of dissociated dislocation, twinning propensity and phase stability are comprehensively investigated by molecular statics simulations and first principles calculations in three typical face-centered cubic (FCC) metals, Cu, Ag and the equiatomic CoCrFeMnNi high-entropy alloy (HEA). It demonstrates that the pressure has an important impact on the morphology of GSFEs in Cu, Ag and the CoCrFeMnNi HEA. In contrast to the slight improvement of twinning propensity in Cu, a substantial enhancement of twinning propensity is caused by high pressures in Ag and the CoCrFeMnNi HEA. The first principles calculation indicates that the dependence of stacking fault energy and the relative stability of FCC and HCP phases on the pressure dictates the sensitivity of twinning propensity to the pressure in FCC metals. The results not only shed new light on the pressure effects on the twinning propensity, but also have an important implication on the manipulation of deformation mechanisms and mechanical properties in FCC metals. (C) 2021 Elsevier B.V. All rights reserved. |
| Keyword | Molecular dynamics simulations First-principles calculations High-pressure High entropy alloy Twinning Phase transitions |
| Funding Organization | National Natural Science Foundation of China (NSFC) ; LiaoNing Revitalization Talents Program |
| DOI | 10.1016/j.jallcom.2021.158869 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China (NSFC)[51571198] ; National Natural Science Foundation of China (NSFC)[51771206] ; National Natural Science Foundation of China (NSFC)[52071316] ; LiaoNing Revitalization Talents Program[XLYC1808027] |
| WOS Research Area | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000630241800027 |
| Publisher | ELSEVIER SCIENCE SA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/161494 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Hu, Q. M.; Yang, J. B.; Zhang, Z. F. |
| Affiliation | 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 3.Northeastern Univ, Sch Mat Sci & Engn, Shenyang 110819, Peoples R China 4.Shenyang Univ Technol, Sch Informat Sci & Engn, Shenyang 111003, Peoples R China |
| Recommended Citation GB/T 7714 | Yan, J. X.,Zhang, Z. J.,Yu, H.,et al. Effects of pressure on the generalized stacking fault energy and twinning propensity of face-centered cubic metals[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2021,866:12. |
| APA | Yan, J. X..,Zhang, Z. J..,Yu, H..,Li, K. Q..,Hu, Q. M..,...&Zhang, Z. F..(2021).Effects of pressure on the generalized stacking fault energy and twinning propensity of face-centered cubic metals.JOURNAL OF ALLOYS AND COMPOUNDS,866,12. |
| MLA | Yan, J. X.,et al."Effects of pressure on the generalized stacking fault energy and twinning propensity of face-centered cubic metals".JOURNAL OF ALLOYS AND COMPOUNDS 866(2021):12. |
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