Atomistic simulations of metallic microstructures

被引：59
作者：
Farkas, Diana [1 ]
机构：
[1] Virginia Tech, Dept Mat Sci & Engn, 201A Holden Hall,445 Old Turner St, Blacksburg, VA 24061 USA
来源：
CURRENT OPINION IN SOLID STATE & MATERIALS SCIENCE | 2013年 / 17卷 / 06期
关键词：
Grain boundaries; Dislocations; Deformation; Fracture; Molecular dynamics; TILT GRAIN-BOUNDARIES; MOLECULAR-DYNAMICS SIMULATIONS; TENSION-COMPRESSION ASYMMETRY; IN-SITU TEM; DISLOCATION NUCLEATION; NANOCRYSTALLINE METALS; SYMMETRIC TILT; THIN-FILMS; DEFORMATION MECHANISMS; COUPLED MOTION;
D O I：
10.1016/j.cossms.2013.11.002
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This paper reviews recent results in the simulation of the mechanical response of metallic microstructures at the atomic level. The role of the grain boundary network in deformation process is the concentration of this paper as studied by virtual tensile and nanoindentation tests. The grain boundary network is found to contribute to plastic deformation through the process of dislocation nucleation, absorption and transmission, as well as grain boundary accommodation mechanisms such as grain boundary sliding and migration. The microstructural grain boundary network is also critical to the nucleation and propagation of cracks. The challenges and opportunities in this area are discussed. (C) 2013 Published by Elsevier Ltd.
引用
收藏
页码：284 / 297
页数：14
相关论文
共 112 条
[11]   Effects of microalloying on the mobility and mechanical response of interfaces in nanocrystalline Cu [J].
Caro A. ;
Farkas D. ;
Bringa E.M. ;
Gilmer G.H. ;
Zepeda-Ruiz L.A. .
Materials Science Forum, 2010, 633-634 :21-30
[12]   Dislocation models of interfacial shearing induced by an approaching lattice glide dislocation [J].
Chu, H. J. ;
Wang, J. ;
Beyerlein, I. J. ;
Pan, E. .
INTERNATIONAL JOURNAL OF PLASTICITY, 2013, 41 :1-13
[13]   Novel routes to nanocrystalline mechanical characterization [J].
Cordill, M. J. ;
Mook, W. M. ;
Nair, A. K. ;
Farkas, D. ;
Gerberich, W. W. .
JOM, 2007, 59 (09) :59-61
[14]   The Nano-Jackhammer effect in probing near-surface mechanical properties [J].
Cordill, M. J. ;
Lund, M. S. ;
Parker, J. ;
Leighton, C. ;
Nair, A. K. ;
Farkas, D. ;
Moody, N. R. ;
Gerberich, W. W. .
INTERNATIONAL JOURNAL OF PLASTICITY, 2009, 25 (11) :2045-2058
[15]   Interaction of dissociated lattice dislocations with a Σ=3 grain boundary in copper [J].
Couzinié, JP ;
Décamps, B ;
Priester, L .
INTERNATIONAL JOURNAL OF PLASTICITY, 2005, 21 (04) :759-775
[16]  
de Koning M, 2002, PHILOS MAG A, V82, P2511, DOI [10.1080/01418610208240050, 10.1080/01418610210144421]
[17]  
Derlet PM, 2002, PHILOS MAG A, V82, P1, DOI 10.1080/01418610110058310
[18]   Novel approaches to multiscale modelling in materials science [J].
Elliott, J. A. .
INTERNATIONAL MATERIALS REVIEWS, 2011, 56 (04) :207-225
[19]   Dislocation activity and nano-void formation near crack tips in nanocrystalline Ni [J].
Farkas, D ;
Van Petegem, S ;
Derlet, PM ;
Van Swygenhoven, H .
ACTA MATERIALIA, 2005, 53 (11) :3115-3123
[20]   Fracture mechanisms of symmetrical tilt grain boundaries [J].
Farkas, D .
PHILOSOPHICAL MAGAZINE LETTERS, 2000, 80 (04) :229-237
12345678910