Finite Temperature Nanovoids Evolution in FCC Metals Using Quasicontinuum Method

摘要

Tensile failure of metals often occurs through void nucleation, growth and coalescence. This work is concerned with the study of plastic nanovoid cavitation in face-centered cubic (FCC) crystals at finite temperature. In particular, the Quasicontinuum (QC) method, suitably extended to finite temperatures, is taken as the basis for the analysis. We specifically focus on nanovoids in copper single crystals deforming in uniaxial and triaxial tension. The complex structure of dislocations around the nanovoid and the evolution of stress, deformation and temperature of the sample is described in the present work.