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Nucleation of dislocations and twins in fcc nanocrystals: Dynamics of structural transformations
Korchuganov, Aleksandr, V; Tyumentsev, Aleksandr N.; Zolnikov, Konstantin P.; Litoychenko, Igor Yu; Kryzhevich, Dmitrij S.; Gutmanas, Elazar; Li, Shouxin; Wang, Zhongguang; Psakhie, Sergey G.
2019
Source PublicationJOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN1005-0302
Volume35Issue:1Pages:201-206
AbstractThis 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.
KeywordLattice defects Dislocation Nanotwin Atomic model Molecular dynamics simulations
Indexed BySCI
Language英语
WOS IDWOS:000449263900027
PublisherJOURNAL MATER SCI TECHNOL
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/81519
Collection中国科学院金属研究所
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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