Publication result detail

Influence of superimposed normal stress on the <112>{111} shear strength in perfect fcc metals

ČERNÝ, M.; POKLUDA, J.

Original Title

Influence of superimposed normal stress on the <112>{111} shear strength in perfect fcc metals

English Title

Influence of superimposed normal stress on the <112>{111} shear strength in perfect fcc metals

Type

WoS Article

Original Abstract

The influence of a stress applied perpendicularly to slip planes during the shear deformation of fcc crystals on the theoretical shear strength was studied for <112>{111} slip system using first principles methods. A special relaxation procedure guarantees that all stresses acting on the system are zero with the exception of the normal stress and the resolved shear stress. The theoretical shear strength was found to be a decreasing function of the applied tensile normal stress. The results were compared with similar calculations for rigid atomic planes and the role of relaxation of atomic positions within the planes was found to be important for correct description of the studied deformation process.

English abstract

The influence of a stress applied perpendicularly to slip planes during the shear deformation of fcc crystals on the theoretical shear strength was studied for <112>{111} slip system using first principles methods. A special relaxation procedure guarantees that all stresses acting on the system are zero with the exception of the normal stress and the resolved shear stress. The theoretical shear strength was found to be a decreasing function of the applied tensile normal stress. The results were compared with similar calculations for rigid atomic planes and the role of relaxation of atomic positions within the planes was found to be important for correct description of the studied deformation process.

Keywords

ideal shear strength, homogeneous deformation, ab initio calculations

Key words in English

ideal shear strength, homogeneous deformation, ab initio calculations

Authors

ČERNÝ, M.; POKLUDA, J.

RIV year

2010

Released

01.01.2008

ISBN

0927-0256

Periodical

COMPUTATIONAL MATERIALS SCIENCE

Volume

44

Number

10

State

Kingdom of the Netherlands

Pages from

127

Pages to

130

Pages count

4

BibTex

@article{BUT44480,
  author="Miroslav {Černý} and Jaroslav {Pokluda}",
  title="Influence of superimposed normal stress on the <112>{111} shear strength in perfect fcc metals",
  journal="COMPUTATIONAL MATERIALS SCIENCE",
  year="2008",
  volume="44",
  number="10",
  pages="127--130",
  issn="0927-0256"
}