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High entropy alloys (HEAs) are materials that exhibit exceptional mechanical properties due to their unique composition and microstructure. The objective of this study is to compare the mechanical properties of HEAs produced through vaccum arc melting and compaction through sintering. HEAs containing Aluminium (Al), Chromium (Cr), Iron (Fe), Nickel (Ni), and Manganese (Mn) has been taken in this research. Studies investigated the effects of varying processing techniques on mechanical behaviour of these alloys. The main research finding propose that vaccum arc melting yield very good mechanical properties compared to sintering process. Experimental techniques such as hardness testing, Wear testing, and microstructural analysis have been employed to evaluate the mechanical properties. The hardness values of the vaccum arc melted material is higher in the range of 91 HRC compared to the lower hardness 63 HRC of the sintered material. Microstructural results reveal the proper sintering and bonding of elements. The results of these studies provide valuable insights into the potential applications of Al-Cr-Fe-Ni-Mn HEAs.

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Microstructure and Mechanical Properties of High Entropy Alloy (Al, Cr, Fe, Ni, Mn) Fabricated by Sintering and Vacuum Arc Melting

  • 会议论文

  • 发表日期：

    2025年

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  • V. Manivel Muralidaran,
  • S. Thirumurugaveerakumar,
  • S. Ramanathan,
  • J. Steve Leo,
  • M. Sriganesh,
  • P. Sivasubramanian

摘要

High entropy alloys (HEAs) are materials that exhibit exceptional mechanical properties due to their unique composition and microstructure. The objective of this study is to compare the mechanical properties of HEAs produced through vaccum arc melting and compaction through sintering. HEAs containing Aluminium (Al), Chromium (Cr), Iron (Fe), Nickel (Ni), and Manganese (Mn) has been taken in this research. Studies investigated the effects of varying processing techniques on mechanical behaviour of these alloys. The main research finding propose that vaccum arc melting yield very good mechanical properties compared to sintering process. Experimental techniques such as hardness testing, Wear testing, and microstructural analysis have been employed to evaluate the mechanical properties. The hardness values of the vaccum arc melted material is higher in the range of 91 HRC compared to the lower hardness 63 HRC of the sintered material. Microstructural results reveal the proper sintering and bonding of elements. The results of these studies provide valuable insights into the potential applications of Al-Cr-Fe-Ni-Mn HEAs.