Influence of Normal Stress on Theoretical Shear Strength of fcc Metals

abstrakt

en

The influence of stress applied perpendicularly to a slip plane during the shear deformation of a crystal on the ideal shear strength was studied for <110>{111} and <112>{111} slip systems from first principles. Previous empirical studies for Lennard-Jones crystal suggested nearly linear dependence of the shear strength on the normal tensile and compressive loading. Our ab initio results verified the linear dependence for 6 fcc metals.

The influence of stress applied perpendicularly to a slip plane during the shear deformation of a crystal on the ideal shear strength was studied for <110>{111} and <112>{111} slip systems from first principles. Previous empirical studies for Lennard-Jones crystal suggested nearly linear dependence of the shear strength on the normal tensile and compressive loading. Our ab initio results verified the linear dependence for 6 fcc metals.

ideal shear strength, homogeneous deformation, ab initio calculations

01.06.2006

Xian, Čína

ICSMA14 abstract booklet

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