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<p><b>Abstract</b>—The structure and mechanical properties of rods made of the near-eutectic 84KKhSR alloy (Co–Cr–Si–B–Fe system) and produced by zone melting are studied. The formed fine-grained structure oriented along the longitudinal axis of the rod is found to cause a high compressive strength (2600 MPa), three-point bending strength (2200 MPa), and nanohardness (8 GPa). High values of elastic strain (ε = 5–6%) are obtained during both single and cyclic compression. The high level of properties is maintained in the temperature range from –196 to 1000°C.</p>

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Influence of Deformation and Temperature on the Strength and Elastic Characteristics of Directionally Solidified Cobalt Alloy 84KKhSR Rods

  • 期刊论文

  • 发表日期：

    2025年4月1日

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  • V. V. Molokanov,
  • N. A. Palii,
  • O. P. Chernogorova,
  • A. V. Krutilin,
  • M. A. Kaplan,
  • A. A. Alpatov

摘要

Abstract—The structure and mechanical properties of rods made of the near-eutectic 84KKhSR alloy (Co–Cr–Si–B–Fe system) and produced by zone melting are studied. The formed fine-grained structure oriented along the longitudinal axis of the rod is found to cause a high compressive strength (2600 MPa), three-point bending strength (2200 MPa), and nanohardness (8 GPa). High values of elastic strain (ε = 5–6%) are obtained during both single and cyclic compression. The high level of properties is maintained in the temperature range from –196 to 1000°C.