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This study details the design, fabrication, and characterizationCharacterization of a non-equiatomic iron-based high-entropy alloy from the FeMnAlSiCr-C family. The alloy was produced through vacuum induction melting and subsequently characterized in its as-cast state. Analyses were conducted to assess its chemical composition, phase constituents via X-ray diffraction, and the microstructureMicrostructure was observed through scanning electron microscopyScanning Electron Microscopy (SEM). XRDX-Ray Diffraction (XRD) results indicated a ferritic matrix (α) alongside an intermetallic iron aluminide phase (FeAl), exhibiting an ordered B2-type simple cubicCubic structure. SEMScanning Electron Microscopy (SEM)-EDS revealed the presence of complex precipitates enriched in manganese, siliconSilicon, and chromium, as well as lamellar structuresLamellar structure associated with displacive or eutectoid transformations. In the as-cast condition, the alloy exhibited an average grain sizeAverage grain size of 213 µm and an average hardness of 474 HV. These findings demonstrate that the alloy's multicomponent composition and meticulous processing techniques contribute to the formation of intricate microstructuresMicrostructure with enhanced mechanical propertiesMechanical properties.

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Microstructural Study of an Iron-Based High-Entropy Alloy FeMnAlSiCr-C

  • 会议论文

  • 发表日期：

    2026年

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  • José R. Ortiz-Castillo,
  • Jorge A. Verduzco-Martínez,
  • Juan M. Prado-Lázaro,
  • Israel Aguilera-Navarrete

摘要

This study details the design, fabrication, and characterizationCharacterization of a non-equiatomic iron-based high-entropy alloy from the FeMnAlSiCr-C family. The alloy was produced through vacuum induction melting and subsequently characterized in its as-cast state. Analyses were conducted to assess its chemical composition, phase constituents via X-ray diffraction, and the microstructureMicrostructure was observed through scanning electron microscopyScanning Electron Microscopy (SEM). XRDX-Ray Diffraction (XRD) results indicated a ferritic matrix (α) alongside an intermetallic iron aluminide phase (FeAl), exhibiting an ordered B2-type simple cubicCubic structure. SEMScanning Electron Microscopy (SEM)-EDS revealed the presence of complex precipitates enriched in manganese, siliconSilicon, and chromium, as well as lamellar structuresLamellar structure associated with displacive or eutectoid transformations. In the as-cast condition, the alloy exhibited an average grain sizeAverage grain size of 213 µm and an average hardness of 474 HV. These findings demonstrate that the alloy's multicomponent composition and meticulous processing techniques contribute to the formation of intricate microstructuresMicrostructure with enhanced mechanical propertiesMechanical properties.