On the interactions between molten aluminum and high entropy alloy particles during aluminum matrix composite processing

Huang X., Zhang J., Miao J., ÇİNKILIÇ E., Wang Q., Luo A. A.

Journal of Alloys and Compounds, vol.895, 2022 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 895
  • Publication Date: 2022
  • Doi Number: 10.1016/j.jallcom.2021.162712
  • Journal Name: Journal of Alloys and Compounds
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Aerospace Database, Chemical Abstracts Core, Communication Abstracts, INSPEC, Metadex, Public Affairs Index, Civil Engineering Abstracts
  • Keywords: Aluminum alloys, Composite processing, High entropy alloys, Matrix/particle interactions, Metal matrix composites
  • Hakkari University Affiliated: Yes


The feasibility of adding AlCrTiV high entropy alloy (HEA) particles to molten aluminum to make metal matrix composites was studied. Equiatomic AlCrTiV HEA particles, produced by a solid state reduction process, were dispersed into pure aluminum and 7075 alloy (Al-5.8Zn-2.3Mg-1.4Cu, all weight %) melt and by a ultrasonic dispenser. It was found that the AlCrTiV particles reacted with molten aluminum, leading to the formation of Al45(Cr,V)7 and Al3Ti intermetallic phases in the aluminum matrix composites. Although the AlCrTiV HEA particles did not survive in molten aluminum during composite processing, the final composite materials showed significantly improved mechanical properties, due to grain refinement and dispersion strengthening. The research suggests that the interactions between matrix aluminum alloys and the particles are key in controlling the final microstructure and properties of the composites.