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Abstract <p>The paper presents a study of various structural-phase states of the Fe-Mn-5Si alloy after severe plastic deformation by equal channel angular pressing and high-pressure torsion. Various physical and mechanical characteristics of the alloy were experimentally measured and analyzed in the austenitic coarse-grained, nanostructured grain-subgrain and twinned states, as well as in the predominantly martensitic and two-phase ultrafine-grained states. Indentation methods were used to find that severe plastic deformation increases the modulus of elasticity, the work of elastic deformation, and its elastic component, reducing the contact rigidity of the indenter with the deformed material and the work of plastic deformation. In this case, the alloy in the two-phase state after deformation has the lowest modulus of elasticity and work of plastic deformation at the highest work of elastic deformation.</p>

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The Influence of the Structural-Phase State on Physical and Mechanical Characteristics of Fe-Mn Alloy

  • 期刊论文

  • 发表日期：

    2026年4月1日

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  • O. V. Rybalchenko,
  • N. S. Martynenko,
  • G. V. Rybalchenko,
  • E. A. Lukyanova,
  • P. D. Dolzhenko,
  • I. V. Shchetinin,
  • S. V. Konushkin,
  • P. A. Prokofev,
  • K. S. Kravchuk,
  • A. G. Raab,
  • A. N. Belyakov,
  • S. V. Dobatkin

摘要

Abstract

The paper presents a study of various structural-phase states of the Fe-Mn-5Si alloy after severe plastic deformation by equal channel angular pressing and high-pressure torsion. Various physical and mechanical characteristics of the alloy were experimentally measured and analyzed in the austenitic coarse-grained, nanostructured grain-subgrain and twinned states, as well as in the predominantly martensitic and two-phase ultrafine-grained states. Indentation methods were used to find that severe plastic deformation increases the modulus of elasticity, the work of elastic deformation, and its elastic component, reducing the contact rigidity of the indenter with the deformed material and the work of plastic deformation. In this case, the alloy in the two-phase state after deformation has the lowest modulus of elasticity and work of plastic deformation at the highest work of elastic deformation.