Simulation of shear stress in icosahedral quasicrystals

被引：32

作者：

Dilger, C

Mikulla, R

Roth, J

Trebin, HR

机构：

[1] Institut für Theoretische und Angewandte Physik, Universität Stuttgart, Stuttgart, D-70550

来源：

PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES | 1997年 / 75卷 / 02期

关键词：

D O I：

10.1080/01418619708205150

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

By a numerical relaxation scheme we have simulated the plastic deformation of a quasicrystal. Shear stress was applied to a quasiperiodic icosahedral atomic configuration of Lennard-Jones particles, and nucleation of dislocation dipoles was observed which move in a slip plane. We also found climb motion and dissociation of a perfect dislocation into a pair of partials. A plane of phasonic defects is left in the wake of the propagating dislocations.

引用

页码：425 / 441

页数：17