| Nucleation of dislocations and twins in fcc nanocrystals: Dynamics of structural transformations | |
| Korchuganov, Aleksandr, V1; Tyumentsev, Aleksandr N.1,2; Zolnikov, Konstantin P.1; Litoychenko, Igor Yu1,2; Kryzhevich, Dmitrij S.1; Gutmanas, Elazar3; Li, Shouxin4; Wang, Zhongguang4; Psakhie, Sergey G.1 | |
| Corresponding Author | Psakhie, Sergey G.(sp@ispms.ru) |
| 2019 | |
| Source Publication | JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
 |
| ISSN | 1005-0302 |
| Volume | 35Issue:1Pages:201-206 |
| Abstract | This paper reports on a molecular dynamics study of structural rearrangements in a copper nanocrystal during nucleation of plastic deformation under uniaxial tension. The study shows that the resulting nucleation of partial dislocations on the free surface and their glide occurs through local fcc -> bcc -> hcp transformations via consistent atomic displacements. We propose an atomic model for the generation of dislocations and twins based on local reversible fcc -> bcc -> fcc transformations, with the reverse one proceeding through an alternative system. The model gives an insight into possible causes and mechanisms of the generation of partial dislocations and mechanical twins in two and more adjacent planes of plastically deformed nanocrystals. The obtained data allow a better understanding of how plasticity is generated in nanostructured materials. (C) 2018 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology. |
| Keyword | Lattice defects Dislocation Nanotwin Atomic model Molecular dynamics simulations |
| Funding Organization | Russian Science Foundation |
| DOI | 10.1016/j.jmst.2018.09.025 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | Russian Science Foundation[17-19-01374] |
| WOS Research Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000449263900027 |
| Publisher | JOURNAL MATER SCI TECHNOL |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/130406 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Psakhie, Sergey G. |
| Affiliation | 1.Russian Acad Sci, Siberian Branch, Inst Strength Phys & Mat Sci, 2-4 Akad Sky Ave, Tomsk 634055, Russia 2.Natl Res Tomsk State Univ, 36 Lenin Ave, Tomsk 634050, Russia 3.Technion Israel Inst Technol, IL-32000 Haifa, Israel 4.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China |
| Recommended Citation GB/T 7714 | Korchuganov, Aleksandr, V,Tyumentsev, Aleksandr N.,Zolnikov, Konstantin P.,et al. Nucleation of dislocations and twins in fcc nanocrystals: Dynamics of structural transformations[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2019,35(1):201-206. |
| APA | Korchuganov, Aleksandr, V.,Tyumentsev, Aleksandr N..,Zolnikov, Konstantin P..,Litoychenko, Igor Yu.,Kryzhevich, Dmitrij S..,...&Psakhie, Sergey G..(2019).Nucleation of dislocations and twins in fcc nanocrystals: Dynamics of structural transformations.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,35(1),201-206. |
| MLA | Korchuganov, Aleksandr, V,et al."Nucleation of dislocations and twins in fcc nanocrystals: Dynamics of structural transformations".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 35.1(2019):201-206. |
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