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Abstract <p>Manufacturing foundations for maintaining a single-crystal structure in rolled thin sheets (0.5 mm thick) prepared from a high-purity [110] molybdenum single crystal grown by electron-beam zone melting are reported. The sheets are manufactured from plate workpieces cut from the single crystal using cold rolling (350°C); a reduction per pass of 5, 10, and 15% to a total strain of 50–75%; and intermediate and final annealing. The maximum scatter of the [001] orientation in the rolled sheets is 3.42°; after final annealing, it is 2.64°. The substructure is studied, and the microhardnesses of the single-crystal plate workpieces (≈177&#xa0;HV0.5), the final-thickness rolled sheets (≈199 HV0.5), and the sheets subjected to final annealing (≈190 HV0.5) are estimated.</p>

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Preparation of a Rolled Thin Sheet from a Molybdenum Single Crystal while Maintaining a Single-Crystal Structure

  • 期刊论文

  • 发表日期：

    2025年3月1日

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  • N. B. Kolchugina,
  • N. A. Dormidontov,
  • V. M. Kirillova,
  • R. D. Karelin,
  • V. V. Sdobyrev,
  • A. S. Bakulina,
  • V. N. Serebryanyi,
  • A. S. Kolyanova,
  • R. A. Vakhrushev,
  • S. V. Gorbunov

摘要

Abstract

Manufacturing foundations for maintaining a single-crystal structure in rolled thin sheets (0.5 mm thick) prepared from a high-purity [110] molybdenum single crystal grown by electron-beam zone melting are reported. The sheets are manufactured from plate workpieces cut from the single crystal using cold rolling (350°C); a reduction per pass of 5, 10, and 15% to a total strain of 50–75%; and intermediate and final annealing. The maximum scatter of the [001] orientation in the rolled sheets is 3.42°; after final annealing, it is 2.64°. The substructure is studied, and the microhardnesses of the single-crystal plate workpieces (≈177 HV0.5), the final-thickness rolled sheets (≈199 HV0.5), and the sheets subjected to final annealing (≈190 HV0.5) are estimated.