Open AccessEffects of grain size on the dynamic tensile damage of ductile polycrystalline metall
Author(s) -
Fengguo Zhang,
Hongbo Zhou
Publication year - 2013
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.62.164601
Subject(s) - materials science , nucleation , grain size , crystallite , void (composites) , ultimate tensile strength , composite material , metallurgy , thermodynamics , physics
In the paper, we propose a new nucleation rate function, which combines grain size, and models for nucleation and growth of voids in a ductile polycrystalline metal. The proposed model is used to analyse the effects of grain size on the dynamic tensile damage of high purity Cu samples with different grain sizes. Numerical results show that pull-back minima and void number decrease with grain size increasing, slope after pull-back and average void diameter increase with grain size increasing. The computed results are in qualitative agreement with experimental results.