Determination of Constitutive Parameters of Crystal Plasticity using Micro-pillar Testing with Pure Aluminum

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  • OCHI Nobuhisa
    JSOL Joint Research Chair for Next-generation CAE, Graduate School of Engineering Osaka University JSOL Corporation
  • AMAISHI Toshiro
    JSOL Joint Research Chair for Next-generation CAE, Graduate School of Engineering Osaka University JSOL Corporation
  • HIRASHIMA Tei
    JSOL Joint Research Chair for Next-generation CAE, Graduate School of Engineering Osaka University JSOL Corporation
  • SHIBUTANI Yoji
    Graduate School of Engineering Osaka University Vietnam Japan University

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Other Title
  • 純アルミニウムのマイクロピラー試験による結晶塑性構成式パラメータの同定

Abstract

<p>The uniaxial compression test using the micrometer-sized specimen is employed to evaluate elastic-plastic deformation behavior of the selective single crystal from polycrystalline materials. Through reflecting these properties into the crystal plasticity finite element method (CPFEM), elastic-plastic analyses of the polycrystalline materials can be performed based on the single crystalline properties of real materials. In this study, the micro-pillar compression tests were conducted in the some single crystals of recrystallized polycrystalline pure aluminum. A method identifying CRSS, work hardening parameters and anisotropic elastic constants was proposed. The predicted stress-strain curves of single crystals obtained by CPFEM agree well with the original experimental data.</p>

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