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<p>A&#xa0;high-entropy Ti–Cr–Fe–Ni–Ga alloy with a&#xa0;near-equiatomic ratio of components was obtained from a&#xa0;mechanical mixture of Ti, Ni, Cr, and ferrogallium powders by the electric arc melting method. According to the results of the X‑ray phase analysis of the obtained alloy, it was established that it consists of two solid substitution solutions. The first is formed based on chromium and iron (β1-bcc1), the second—based on iron and all other elements (β2-bcc2). The mass content of the β1 phase is approx. 40%, and of the β2 phase—approx. 60%. The Rockwell hardness of the alloy is approx. 44&#xa0;HRC. The main physicomechanical properties of materials were determined by the method of automatic instrumental microindentation. It is shown that the characteristics of the hardness <i>HM</i> (and, accordingly, the value of yield strength σ<sub><i>S</i></sub> calculated from Teibor’s relation) and Young’s modulus are at a&#xa0;fairly high level (<i>HM</i> = 9.71 GPa, <i>E</i> = 254.7 GPa, σ<sub><i>S</i></sub> = 3.24 GPa); however, the alloy is characterized by a&#xa0;low level of plasticity.</p>

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Structure and properties of the high-entropy TiCrFeNiGa alloy

  • 期刊论文

  • 发表日期：

    2025年7月1日

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  • M. V. Marych,
  • G. A. Bagliuk,
  • D. A. Honcharuk,
  • T. O. Soloviova,
  • A. A. Golubenko

摘要

A high-entropy Ti–Cr–Fe–Ni–Ga alloy with a near-equiatomic ratio of components was obtained from a mechanical mixture of Ti, Ni, Cr, and ferrogallium powders by the electric arc melting method. According to the results of the X‑ray phase analysis of the obtained alloy, it was established that it consists of two solid substitution solutions. The first is formed based on chromium and iron (β1-bcc1), the second—based on iron and all other elements (β2-bcc2). The mass content of the β1 phase is approx. 40%, and of the β2 phase—approx. 60%. The Rockwell hardness of the alloy is approx. 44 HRC. The main physicomechanical properties of materials were determined by the method of automatic instrumental microindentation. It is shown that the characteristics of the hardness HM (and, accordingly, the value of yield strength σS calculated from Teibor’s relation) and Young’s modulus are at a fairly high level (HM = 9.71 GPa, E = 254.7 GPa, σS = 3.24 GPa); however, the alloy is characterized by a low level of plasticity.