HARD-SPHERE MODELING OF THE EFFECT OF SLIP ON INTERSTITIAL SITES IN THE B2 STRUCTURE

被引：3

作者：

BAKER, I

机构：

[1] Thayer School of Engineering, Dartmouth College, Hanover, New Hampshire

来源：

JOURNAL OF MATERIALS RESEARCH | 1993年 / 8卷 / 06期

基金：

美国能源部;

关键词：

B2 compounds - B2 structure - Body centered cubic (bcc) lattices - Hard sphere modeling - Interstitial atom segregation - Interstitial sites - Partial dislocation - Slip effects - Unslipped lattice;

D O I：

10.1557/JMR.1993.1203

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Geometrical modeling of the B2 structure indicates that the tetrahedral interstitial site is always the largest both before and after an a/2[111] translation on {110}, such as occurs during the slip of a partial dislocation in some B2 compounds. The tetrahedral site within the APB which trails a gliding a/2[111] dislocation is larger than in the unslipped lattice, suggesting that interstitial atoms will segregate there. Also, some interstitial sites in a B2 lattice are larger than those in a bcc lattice of the same lattice parameter, suggesting that interstitials may have greater solubility in B2 compounds.

引用

页码：1203 / 1205

页数：3