Embrittlement and the bistable crystal structure of zirconium hydride

GJ Ackland

doi:10.1103/PhysRevLett.80.2233

Embrittlement and the bistable crystal structure of zirconium hydride

GJ Ackland

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

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.

Original language	English
Pages (from-to)	2233-2236
Number of pages	4
Journal	Physical Review Letters
Volume	80
Issue number	10
DOIs	https://doi.org/10.1103/PhysRevLett.80.2233
Publication status	Published - 9 Mar 1998

Keywords

PSEUDOPOTENTIALS
GROWTH
ALLOYS
STATE
GAS

Access to Document

10.1103/PhysRevLett.80.2233

http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.80.2233

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title = "Embrittlement and the bistable crystal structure of zirconium hydride",

abstract = "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 ",

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author = "GJ Ackland",

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KW - STATE

KW - GAS

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