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This study focuses on developing AlNbTaTiVAlNbTaTiV refractory high-entropy particles via sequential mechanical alloyingMechanical Alloying, leveraging the promising high-temperatureTemperature properties ofRefractory high-entropy alloys refractory high-entropy alloysHigh-entropy alloys (RHEAs). The presence of Al enhances ductility and reduces densityDensity while stabilizing the body-centered cubic (BCC) phase, as evidenced by X-ray diffraction data. Changes in microstructureMicrostructure and chemical composition were investigated by sequentially incorporating Ti and V into the AlNbTa ternary system. Observations revealed that severe shear deformation from mechanical alloyingMechanical Alloying led to random welding orientations, dominating the formation of AlNbTaTiVAlNbTaTiV particles. Particle size analysis indicated fracturing and cold-welding during alloying, confirmed by scanning electron micrographs. Energy-dispersive X-ray analysis provided insights into the chemical compositions throughout the alloying process, explained by the physicochemical properties of the constituent elements. ThermodynamicThermodynamics calculations supported the characterizationCharacterization and analysisHigh-energy mechanical alloying results.

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Sequential Mechanical Alloying of AlNbTaTiV Particles: Phase Formation and Microstructural Evaluation

  • 会议论文

  • 发表日期：

    2025年

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  • Marvin S. Tolentino,
  • Aisa Grace D. Custodio,
  • Gobinda C. Saha,
  • Clodualdo Aranas

摘要

This study focuses on developing AlNbTaTiVAlNbTaTiV refractory high-entropy particles via sequential mechanical alloyingMechanical Alloying, leveraging the promising high-temperatureTemperature properties ofRefractory high-entropy alloys refractory high-entropy alloysHigh-entropy alloys (RHEAs). The presence of Al enhances ductility and reduces densityDensity while stabilizing the body-centered cubic (BCC) phase, as evidenced by X-ray diffraction data. Changes in microstructureMicrostructure and chemical composition were investigated by sequentially incorporating Ti and V into the AlNbTa ternary system. Observations revealed that severe shear deformation from mechanical alloyingMechanical Alloying led to random welding orientations, dominating the formation of AlNbTaTiVAlNbTaTiV particles. Particle size analysis indicated fracturing and cold-welding during alloying, confirmed by scanning electron micrographs. Energy-dispersive X-ray analysis provided insights into the chemical compositions throughout the alloying process, explained by the physicochemical properties of the constituent elements. ThermodynamicThermodynamics calculations supported the characterizationCharacterization and analysisHigh-energy mechanical alloying results.