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<p>Flow curves describing the rheological properties of the AK7 alloy within a&#xa0;temperature range of 375–425 °C and a&#xa0;strain rate range of 0.01–50 s⁻<sup>1</sup> were established using a&#xa0;Gleeble 3500 thermo-mechanical simulator. The data were used to simulate the alloy hot rolling process using a&#xa0;computer. For the as-cast state, the model predicted crack formation at a&#xa0;total reduction of 35%. However, for the annealed state, deformation without cracking was predicted at a&#xa0;total reduction of up to 50%. The results of the computer simulation were subsequently validated by physical experimentation. The acquired data were applied during the industrial trial rolling of a&#xa0;rim profile for one standard wheel size made from AK7 alloy. The properties of all 20&#xa0;wheel disks met the relevant technical standards specifications after rolling.</p>

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Rheological model for deformation of AK7 alloy

  • 期刊论文

  • 发表日期：

    2026年3月1日

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  • I. L. Konstantinov,
  • S. B. Sidelnikov,
  • Y. V. Baykovskiy,
  • M. V. Chukin,
  • E. S. Lopatina,
  • D. S. Voroshilov,
  • M. P. Bundin,
  • D. S. Stenin,
  • P. O. Yuryev

摘要

Flow curves describing the rheological properties of the AK7 alloy within a temperature range of 375–425 °C and a strain rate range of 0.01–50 s⁻1 were established using a Gleeble 3500 thermo-mechanical simulator. The data were used to simulate the alloy hot rolling process using a computer. For the as-cast state, the model predicted crack formation at a total reduction of 35%. However, for the annealed state, deformation without cracking was predicted at a total reduction of up to 50%. The results of the computer simulation were subsequently validated by physical experimentation. The acquired data were applied during the industrial trial rolling of a rim profile for one standard wheel size made from AK7 alloy. The properties of all 20 wheel disks met the relevant technical standards specifications after rolling.