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Aluminum alloysAluminum alloy with Fe and Ni additions contain thermally stable intermetallicIntermetallic phases that allow for their use in elevated temperature applications. Additions of Fe and Ni also result in Al alloysAl alloy with high thermal and electrical conductivityElectrical conductivity and high castabilityCastability due to their low solid solubility and short freezing ranges, respectively. The addition of Sc to Al-Fe-Ni alloys can result in high strength Al-Fe-Ni alloys without significantly reduced conductivity. However, understanding of the intermetallicIntermetallic phases observed in Al-Fe-Ni alloys with Sc additions is limited. This research showcases the morphology of intermetallicIntermetallic phases observed in Al alloysAl alloy with varying levels of Fe, Ni and Sc by using electron and optical microscopy. Additional results on the influence of Fe, Ni and Sc on microhardnessMicrohardness and electrical conductivityElectrical conductivity prior to and after heat treatmentHeat treatment are also showcased. The research aims to gain an understanding of Fe, Ni and Sc interactions for development of high strength, low density and thermally stable conductors.

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Examination of Intermetallic Phases in Al-Fe-Ni Alloys with Scandium

  • 会议论文

  • 发表日期：

    2025年

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  • Abdallah Elsayed,
  • Thomas Dorin,
  • Stephanie Kotiadis,
  • Lu Jiang

摘要

Aluminum alloysAluminum alloy with Fe and Ni additions contain thermally stable intermetallicIntermetallic phases that allow for their use in elevated temperature applications. Additions of Fe and Ni also result in Al alloysAl alloy with high thermal and electrical conductivityElectrical conductivity and high castabilityCastability due to their low solid solubility and short freezing ranges, respectively. The addition of Sc to Al-Fe-Ni alloys can result in high strength Al-Fe-Ni alloys without significantly reduced conductivity. However, understanding of the intermetallicIntermetallic phases observed in Al-Fe-Ni alloys with Sc additions is limited. This research showcases the morphology of intermetallicIntermetallic phases observed in Al alloysAl alloy with varying levels of Fe, Ni and Sc by using electron and optical microscopy. Additional results on the influence of Fe, Ni and Sc on microhardnessMicrohardness and electrical conductivityElectrical conductivity prior to and after heat treatmentHeat treatment are also showcased. The research aims to gain an understanding of Fe, Ni and Sc interactions for development of high strength, low density and thermally stable conductors.