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<p>In this work, Mn and Cr were introduced into as-cast Al-Ni-Fe alloys to tailor the microstructure and decrease thermal conductivity and enhance strength. Secondary phase transformation caused by alloying was analyzed. To further improve the comprehensive performance of the Al-Ni-Fe-Mn-Cr alloy, squeeze casting was employed. The results revealed that the addition of Mn and Cr refined the eutectic structure and promoted the formation of multicomponent intermetallic compounds. After squeeze casting, a low thermal conductivity of 89&#xa0;W/(m&#xa0;K) and good mechanical properties with a yield strength of 125&#xa0;MPa, a tensile strength of 227&#xa0;MPa, and an elongation of 8.1% for the alloy were obtained.</p>

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Tailoring the Thermal Conductivity and Mechanical Property of Al-Ni-Fe Alloys via Mn and Cr Alloying and Squeeze Casting

  • 期刊论文

  • 发表日期：

    2026年7月11日

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  • Tianhang Xu,
  • Changfeng Wang,
  • Minqiang Gao,
  • Renguo Guan

摘要

In this work, Mn and Cr were introduced into as-cast Al-Ni-Fe alloys to tailor the microstructure and decrease thermal conductivity and enhance strength. Secondary phase transformation caused by alloying was analyzed. To further improve the comprehensive performance of the Al-Ni-Fe-Mn-Cr alloy, squeeze casting was employed. The results revealed that the addition of Mn and Cr refined the eutectic structure and promoted the formation of multicomponent intermetallic compounds. After squeeze casting, a low thermal conductivity of 89 W/(m K) and good mechanical properties with a yield strength of 125 MPa, a tensile strength of 227 MPa, and an elongation of 8.1% for the alloy were obtained.