NEW MECHANISM OF DEFECT PRODUCTION IN METALS - A MOLECULAR-DYNAMICS STUDY OF INTERSTITIAL-DISLOCATION-LOOP FORMATION IN HIGH-ENERGY DISPLACEMENT CASCADES

被引：204

作者：

DELARUBIA, TD

GUINAN, MW

机构：

[1] University of California, Lawrence Livermore National Laboratory, Livermore, L-644

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 66卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.66.2766

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present molecular-dynamics computer-simulation studies of 25-keV displacement cascades in Cu at low temperature. We observe the splitting of a cascade into subcascades and for the first time show by molecular dynamics that cascades in metals may lead to the formation of both vacancy and interstitial dislocation loops. We propose a new mechanism of defect production based on interstitial prismatic dislocation-loop formation and discuss its consequences regarding the primary state of damage in irradiated metals.

引用

页码：2766 / 2769

页数：4

共 25 条

[1]

ATWATER H, 1991, MRS S P, V201

[2] ION-IRRADIATION STUDIES OF THE DAMAGE FUNCTION OF COPPER AND SILVER [J].