Atomistic based continuum investigation of plastic deformation in nanocrystalline copper

被引：114
作者：
Warner, DH
Sansoz, F
Molinari, JF
机构：
[1] Johns Hopkins Univ, Dept Mech Engn, Baltimore, MD 21218 USA
[2] Univ Vermont, Dept Mech Engn, Burlington, VT 05405 USA
来源：
INTERNATIONAL JOURNAL OF PLASTICITY | 2006年 / 22卷 / 04期
关键词：
nanocrystalline; finite elements; quasicontinuum; grain boundaries;
D O I：
10.1016/j.ijplas.2005.04.014
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
A continuum model of nanocrystalline copper was developed based on results from independent atomistic calculations on 11 bicrystals containing high angle grain boundaries. The relationship between grain boundary structure and its mechanical response was investigated. Based on the atomistic calculations; a constitutive law for grain boundary interfaces was implemented within a finite element calculation that consisted of a microstructure loaded in compression. The yield strength as a function of grain size was compared to experimental data and molecular dynamics results. Calculations were performed to demonstrate the relationship between intragranular plasticity and grain boundary sliding. (c) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码：754 / 774
页数：21
相关论文
共 51 条
[1]   A computational procedure for rate-independent crystal plasticity [J].
Anand, L ;
Kothari, M .
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS, 1996, 44 (04) :525-558
[2]  
[Anonymous], 1987, FINITE ELEMENT METHO
[3]   OVERVIEW .42. TEXTURE DEVELOPMENT AND STRAIN-HARDENING IN RATE DEPENDENT POLYCRYSTALS [J].
ASARO, RJ ;
NEEDLEMAN, A .
ACTA METALLURGICA, 1985, 33 (06) :923-953
[4]   Deformation mechanism transitions in nanoscale fcc metals [J].
Asaro, RJ ;
Krysl, P ;
Kad, B .
PHILOSOPHICAL MAGAZINE LETTERS, 2003, 83 (12) :733-743
[5]   DIFFUSION-ACCOMMODATED FLOW AND SUPERPLASTICITY [J].
ASHBY, MF ;
VERRALL, RA .
ACTA METALLURGICA, 1973, 21 (02) :149-163
[6]  
Bathe K. J., 1976, NUMERICAL METHODS FI
[7]   Homogenization method for strength and inelastic behavior of nanocrystalline materials [J].
Capolungo, L ;
Jochum, C ;
Cherkaoui, M ;
Qu, J .
INTERNATIONAL JOURNAL OF PLASTICITY, 2005, 21 (01) :67-82
[8]   Deformation twinning in nanocrystalline aluminum [J].
Chen, MW ;
Ma, E ;
Hemker, KJ ;
Sheng, HW ;
Wang, YM ;
Cheng, XM .
SCIENCE, 2003, 300 (5623) :1275-1277
[9]   A MODEL FOR BOUNDARY DIFFUSION CONTROLLED CREEP IN POLYCRYSTALLINE MATERIALS [J].
COBLE, RL .
JOURNAL OF APPLIED PHYSICS, 1963, 34 (06) :1679-&
[10]   On the grain size softening in nanocrystalline materials [J].
Conrad, H ;
Narayan, J .
SCRIPTA MATERIALIA, 2000, 42 (11) :1025-1030
123456