Probability distribution of internal stresses in parallel straight dislocation systems

被引:54
作者
Groma, I [1 ]
Bako, B [1 ]
机构
[1] Eotvos Lorand Univ, Dept Gen Phys, H-1445 Budapest, Hungary
来源
PHYSICAL REVIEW B | 1998年 / 58卷 / 06期
关键词
D O I
10.1103/PhysRevB.58.2969
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The collective behavior of a system of straight parallel dislocations is investigated. It is found by numerical simulation that the internal stress tau created by the dislocation has a stochastic component. In order to describe this stochastic character the form of the probability distribution function of the internal stress is determined. It is shown that the mean value of the distribution function is the self-consistent field created by the dislocation and the distribution function decays with 1/tau(3).
引用
收藏
页码:2969 / 2974
页数:6
相关论文
共 30 条
[1]   ON THE DYNAMIC ORIGIN OF DISLOCATION PATTERNS [J].
AIFANTIS, EC .
MATERIALS SCIENCE AND ENGINEERING, 1986, 81 (1-2) :563-574
[2]   DISLOCATION DYNAMICS .1. A PROPOSED METHODOLOGY FOR DEFORMATION MICROMECHANICS [J].
AMODEO, RJ ;
GHONIEM, NM .
PHYSICAL REVIEW B, 1990, 41 (10) :6958-6967
[3]   STATIC VERSUS PROPAGATIVE PLASTIC STRAIN LOCALIZATIONS [J].
BRECHET, YJM ;
CANOVA, GR ;
KUBIN, LP .
SCRIPTA METALLURGICA ET MATERIALIA, 1993, 29 (09) :1165-1170
[4]  
CHANDRASEKHAR S, 1943, REV MOD PHYS, V15, P8
[5]   Comparison of discrete dislocation and continuum plasticity predictions for a composite material [J].
Cleveringa, HHM ;
VanderGiessen, E ;
Needleman, A .
ACTA MATERIALIA, 1997, 45 (08) :3163-3179
[6]   MODEL VALIDATION OF A 3D SIMULATION OF DISLOCATION DYNAMICS - DISCRETIZATION AND LINE TENSION EFFECTS [J].
DEVINCRE, B ;
CONDAT, M .
ACTA METALLURGICA ET MATERIALIA, 1992, 40 (10) :2629-2637
[7]   INVESTIGATION OF THE FORMATION OF DISLOCATION CELL STRUCTURES AND THE STRAIN-HARDENING OF METALS BY COMPUTER-SIMULATION [J].
FANG, XF ;
DAHL, W .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1993, 164 (1-2) :300-305
[8]   Formation of dislocation patterns: Computer simulations [J].
Fournet, R ;
Salazar, JM .
PHYSICAL REVIEW B, 1996, 53 (10) :6283-6290
[9]   MODEL OF EARLY STAGE OF DISLOCATION-STRUCTURE FORMATION IN CYCLICALLY DEFORMED METAL CRYSTALS [J].
FRANEK, A ;
KALUS, R ;
KRATOCHVIL, J .
PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES, 1991, 64 (03) :497-511
[10]   Link between the individual and continuum approaches of the description of the collective behavior of dislocations [J].
Groma, I ;
Balogh, P .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1997, 234 :249-252