Nucleation of dislocations and twins in fcc nanocrystals: Dynamics of structural transformations

doi:10.1016/j.jmst.2018.09.025

IMR OpenIR

	Nucleation of dislocations and twins in fcc nanocrystals: Dynamics of structural transformations
	Korchuganov, Aleksandr, V 1; Tyumentsev, Aleksandr N.1,2; Zolnikov, Konstantin P.1; Litoychenko, Igor Yu 1,2; Kryzhevich, Dmitrij S.1; Gutmanas, Elazar 3; Li, Shouxin 4; Wang, Zhongguang 4; Psakhie, Sergey G.1
通讯作者	Psakhie, Sergey G.(sp@ispms.ru)
	2019
发表期刊	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN	1005-0302
卷号	35 期号:1 页码:201-206
摘要	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.
关键词	Lattice defects Dislocation Nanotwin Atomic model Molecular dynamics simulations
资助者	Russian Science Foundation
DOI	10.1016/j.jmst.2018.09.025
收录类别	SCI
语种	英语
资助项目	Russian Science Foundation[17-19-01374]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000449263900027
出版者	JOURNAL MATER SCI TECHNOL
引用统计	被引频次：43[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/130408
专题	中国科学院金属研究所
通讯作者	Psakhie, Sergey G.
作者单位	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
推荐引用方式 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.