Incidence of atom shuffling on the shear and decohesion behavior of a symmetric tilt grain boundary in copper

被引：74

作者：

Sansoz, F ^{[1
]}

Molinari, JF ^{[1
]}

机构：

[1] Johns Hopkins Univ, Dept Mech Engn, Baltimore, MD 21218 USA

来源：

SCRIPTA MATERIALIA | 2004年 / 50卷 / 10期

关键词：

grain boundary structure; grain boundary cohesion; yield phenomena; simulation; quasicontinuum method;

D O I：

10.1016/j.scriptamat.2004.02.031

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The constitutive response of a Sigma9(221) symmetric tilt grain boundary in copper is investigated with an atomistic quasicontinuum method under tension and shear. The maximum strength is found to change with the deformation mode triggered at the interface. Atom shuffling processes cause a major decrease in the intrinsic boundary strength under shear. (C) 2004 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：1283 / 1288

页数：6

共 24 条

[1] Atomistic simulation of grain boundary sliding and migration [J].

Chandra, N ;

Dang, P .

JOURNAL OF MATERIALS SCIENCE, 1999, 34 (04) :655-666

[2]

FOILES SM, 1986, PHYS REV B, V33, P7983, DOI 10.1103/PhysRevB.33.7983

[3] Multiscale Modeling of Deformation and Fracture of Polycrystalline Lamellar γ-TiAl + α2-Ti3Al Alloys [J].

Grujicic, M. ;

Cao, G. ;

Joseph, P. F. .

INTERNATIONAL JOURNAL FOR MULTISCALE COMPUTATIONAL ENGINEERING, 2003, 1 (01) :1-21

[4] Molecular-dynamics study of mechanical properties of copper [J].

Heino, P ;

Hakkinen, H ;

Kaski, K .

EUROPHYSICS LETTERS, 1998, 41 (03) :273-278

[5] A multiscale analysis of fixed-end simple shear using molecular dynamics, crystal plasticity, and a macroscopic internal state variable theory [J].

Horstemeyer, MF ;

Baskes, MI ;

Prantil, VC ;

Philliber, J ;

Vonderheide, S .

MODELLING AND SIMULATION IN MATERIALS SCIENCE AND ENGINEERING, 2003, 11 (03) :265-286

[6] Dislocation nucleation and defect structure during surface indentation [J].

Kelchner, CL ;

Plimpton, SJ ;

Hamilton, JC .

PHYSICAL REVIEW B, 1998, 58 (17) :11085-11088

[7] Effect of grain boundary dislocations on the sliding resistance of σ11 grain boundaries in aluminum [J].

Kurtz, RJM ;

Hoagland, RG .

SCRIPTA MATERIALIA, 1998, 39 (4-5) :653-659

[8] AtomEye: an efficient atomistic configuration viewer [J].

Li, J .

MODELLING AND SIMULATION IN MATERIALS SCIENCE AND ENGINEERING, 2003, 11 (02) :173-177

[9] Critical analysis of local constitutive models for slip and decohesion [J].

Miller, R ;

Phillips, R .

PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES, 1996, 73 (04) :803-827

[10] Antimony-induced embrittlement of [011] symmetric tilt boundaries in copper bicrystals [J].

Monzen, R ;

Kuze, T ;

Matsuda, O ;

Miura, H .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2003, 34A (03) :773-779

← 1 2 3 →