Measurement of True Stress–True Strain Curve up to Large Strain Extent at Elevated Temperatures in Ti–6Al–4V Alloy with Image Analysis Tensile Test Method

DOI Web Site Web Site 参考文献17件
  • Ito Atsushi
    Department of Materials and Synchrotron Radiation Engineering, Graduate School of Engineering, University of Hyogo
  • Yamato Masatoshi
    Department of Materials and Synchrotron Radiation Engineering, Graduate School of Engineering, University of Hyogo
  • Torizuka Shiro
    Department of Materials and Synchrotron Radiation Engineering, Graduate School of Engineering, University of Hyogo

この論文をさがす

抄録

<p>The image analysis tensile test method was applied to obtain true stress–true strain curves at elevated temperature in Ti–6Al–4V alloy. A CCD camera successfully captured the profile change of a specimen during the tensile test. Minimum radius and neck curvature can be calculated from the profile, then used to determine true strain and true stress after necking using Bridgman’s equation. True stress–true strain curves up to a strain of 0.8 were obtained in the high temperature tensile test at 850°C. The true stress–true strain curves show work hardening at a strain rate of 0.2 s−1 and dynamic restoration at a strain rate of 0.01 s−1 in the tensile test at 850°C. On the other hand, in compression tests, the true stress–true strain curves show steep decrease in true stress after yielding. This might be due to the effect of barreling of the specimen, rather than any metallurgical structural change. The image analysis tensile test method is applicable to obtain accurate high–temperature true stress–true strain curves at elevated temperature up to large strain extent.</p><p> </p><p>This Paper was Originally Published in Japanese in J. JSTP 62 (2021) 177–182.</p>

収録刊行物

  • MATERIALS TRANSACTIONS

    MATERIALS TRANSACTIONS 65 (1), 43-48, 2024-01-01

    公益社団法人 日本金属学会

参考文献 (17)*注記

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