DIFFUSION IN A MODEL OF AN ORDERED ALLOY

被引：30

作者：

BELOVA, IV

IVORY, ME

MURCH, GE

机构：

[1] Department of Mechanical Engineering, The University of Newcastle, NSW, 2308, Callaghan, New South Wales

来源：

PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES | 1995年 / 72卷 / 04期

基金：

澳大利亚研究理事会;

关键词：

D O I：

10.1080/01418619508239940

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper a simple model of a stoichiometric ordered alloy is considered. Computer simulation is used to determine the behaviour of the tracer correlation factor and cosines of the angles between consecutive tracer jumps. The asymptotic behaviour of the average of the cosine of the angle between jumps for atoms starting from the 'wrong' lattice is derived analytically from consideration of vacancy jump sequences and verified by computer simulation. The efficiency of the six-jump cycle mechanism is also determined. It is clearly shown that this mechanism rapidly becomes dominant as the lattice becomes more ordered.

引用

页码：871 / 880

页数：10

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