Embrittlement and the bistable crystal structure of zirconium hydride

被引：65

作者：

Ackland, GJ ^{[1
]}

机构：

[1] Univ Edinburgh, Dept Phys & Astron, Edinburgh EH9 3JZ, Midlothian, Scotland

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 80卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.80.2233

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The stability of the epsilon phase of zirconium hydride is studied using the pseudopotential plane wave method. The fluorite structure is mechanically unstable with respect to a tetragonal distortion. However, the minimum corresponding to c > a is almost degenerate in energy with that for c < a. The distortion explains the uniaxial misfit strain responsible for delayed hydride cracking in zirconium alloys.

引用

页码：2233 / 2236

页数：4

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