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Abstract <p>The thermal and thermomagnetic properties of the Ni<sub>50</sub>Mn<sub>18.5</sub>Ga<sub>25</sub>Cu<sub>6.5</sub> alloy were studied in the as-cast state and after recrystallization annealing of the strain-hardened structure. It was shown that annealing of the pre-strain-hardened structure at 1123 K for 2 h leads to the formation of an equiaxed grain structure with an average crystallite size of approximately 200 µm. Combined thermal and thermomagnetic analysis demonstrated a simultaneous martensitic and magnetic phase transition. The transformation of the as-cast structure resulted in no significant changes in the thermal and thermomagnetic properties of the martensitic transition.</p>

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Thermomagnetic Characteristics of Martensitic Transformation in the Ni50Mn18.5Ga25Cu6.5 Alloy with the As-Cast and Recrystallized Equiaxed Structures

  • 期刊论文

  • 发表日期：

    2025年9月1日

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  • R. Yu. Gaifullin,
  • R. M. Galeyev,
  • V. I. Mitsiuk,
  • A. V. Mashirov,
  • I. I. Musabirov

摘要

Abstract

The thermal and thermomagnetic properties of the Ni50Mn18.5Ga25Cu6.5 alloy were studied in the as-cast state and after recrystallization annealing of the strain-hardened structure. It was shown that annealing of the pre-strain-hardened structure at 1123 K for 2 h leads to the formation of an equiaxed grain structure with an average crystallite size of approximately 200 µm. Combined thermal and thermomagnetic analysis demonstrated a simultaneous martensitic and magnetic phase transition. The transformation of the as-cast structure resulted in no significant changes in the thermal and thermomagnetic properties of the martensitic transition.