The role of collinear interaction in dislocation-induced hardening

被引：296

作者：

Madec, R

Devincre, B

Kubin, L

Hoc, T

Rodney, D

机构：

[1] CNRS, ONERA, UMR 104, Lab Etud Microstruct, F-92322 Chatillon, France

[2] Ecole Cent Paris, Lab Mecan Sols Struct & Mat, CNRS, UMR 8579, F-92295 Chatenay Malabry, France

[3] Ecole Natl Super Phys Grenoble, CNRS, UMR 5010, F-38402 St Martin Dheres, France

来源：

SCIENCE | 2003年 / 301卷 / 5641期

关键词：

D O I：

10.1126/science.1085477

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

We connected dislocation-based atomic-scale and continuum models of plasticity in crystalline solids through numerical simulations of dislocation intersections in face-centered cubic crystals. The results contradict the traditional assumption that strain hardening is governed by the formation of sessile junctions between dislocations. The interaction between two dislocations with collinear Burgers vectors gliding in intersecting slip planes was found to be by far the strongest of all reactions. Its properties were investigated and discussed using a multiscale approach.

引用

页码：1879 / 1882

页数：4

共 17 条

[1]

[Anonymous], 1967, DISLOCATIONS

[2]

[Anonymous], PLASTIC DEFORMATION

[3]

Basinski S. J., 1979, Dislocations in solids, vol.IV. Dislocations in metallurgy, P261

[4] LATENT HARDENING IN SINGLE-CRYSTALS .2. ANALYTICAL CHARACTERIZATION AND PREDICTIONS [J].