Temperature dependence of the yield stress in α-titanium investigated with crystal plasticity analysis

Yelm Okuyama, Masaki Tanaka, Tetsuya Ohashi, Tatsuya Morikawa

    研究成果: Chapter in Book/Report/Conference proceedingConference contribution

    抄録

    The effect of the activated slip systems on the temperature dependence of yield stress was investigated in α-Ti by using crystal plasticity finite element method. A model for finite element analysis (FEA) was constructed based on experimental results. The displacement in FEA was applied up to the nominal strain of 4% which is the same strain as the experimental one. Stress-strain curves were obtained, which corresponds to experimental data taken every 50 K between 73 K and 673 K. The used material constants which are temperature dependent were elastic constants, and lattice friction stresses. The lattice friction stresses of basal slip systems were set to be higher than that of pyramidal slip systems at 73 K. Then, the lattice friction stresses were set to be closer as the temperature increases. It was found that the activation of slip systems is strong temperature dependent, and that the yield stress depends on the number of active slip systems.

    本文言語英語
    ホスト出版物のタイトルTHERMEC 2018
    編集者R. Shabadi, Mihail Ionescu, M. Jeandin, C. Richard, Tara Chandra
    出版社Trans Tech Publications Ltd
    ページ1474-1478
    ページ数5
    ISBN(印刷版)9783035712087
    DOI
    出版ステータス出版済み - 1 1 2018
    イベント10th International Conference on Processing and Manufacturing of Advanced Materials, 2018 - Paris, フランス
    継続期間: 7 9 20187 13 2018

    出版物シリーズ

    名前Materials Science Forum
    941 MSF
    ISSN(印刷版)0255-5476
    ISSN(電子版)1662-9752

    会議

    会議10th International Conference on Processing and Manufacturing of Advanced Materials, 2018
    国/地域フランス
    CityParis
    Period7/9/187/13/18

    All Science Journal Classification (ASJC) codes

    • 材料科学(全般)
    • 凝縮系物理学
    • 材料力学
    • 機械工学

    フィンガープリント

    「Temperature dependence of the yield stress in α-titanium investigated with crystal plasticity analysis」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

    引用スタイル