Crystal Plasticity Analysis of Microscopic Deformation Mechanisms and GN Dislocation Accumulation Depending on Vanadium Content in β Phase of Two-Phase Ti Alloy

DOI Web Site Web Site 被引用文献6件 参考文献47件
  • Kawano Yoshiki
    Department of Mechanical Engineering, Kitami Institute of Technology
  • Ohashi Tetsuya
    Department of Mechanical Engineering, Kitami Institute of Technology
  • Mayama Tsuyoshi
    Department of Materials Science and Engineering, Faculty of Engineering, Kumamoto University
  • Mitsuhara Masatoshi
    Department of Advanced Materials Science and Engineering, Faculty of Engineering Sciences, Kyushu University
  • Okuyama Yelm
    Department of Mechanical Engineering, Faculty of Engineering, Kyushu University
  • Sato Michihiro
    Department of Mechanical Engineering, Kitami Institute of Technology

この論文をさがす

抄録

<p>Inhomogeneous deformation of a single α-β colony in a Ti–6Al–4V alloy under uniaxial tensile conditions was numerically simulated using a crystal plasticity finite element (CPFE) method, and we predicted density changes in geometrically necessary dislocations (GNDs) depending on the vanadium concentration in the β phase (Vβ). The geometric model for the CPFE analysis was obtained by converting data from electron back-scatter diffraction patterns into data for the geometric model for CPFE analysis, using a data conversion procedure previously developed by the authors. The results of the image-based crystal plasticity analysis indicated that smaller Vβ induced greater stress in the α phase and smaller stress in the β phase close to the α-β interfaces in the initial stages of deformation because of the elastically softer β phase with lower Vβ. This resulted in greater strain gradients and greater GND density close to the interfaces in the initial stages of deformation within the single α-β colony when the β phase plastically does not deform.</p>

収録刊行物

  • MATERIALS TRANSACTIONS

    MATERIALS TRANSACTIONS 60 (6), 959-968, 2019-06-01

    公益社団法人 日本金属学会

被引用文献 (6)*注記

もっと見る

参考文献 (47)*注記

もっと見る

関連プロジェクト

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ