Synergistic effect of Ti and Al on L12-phase design in CoCrFeNi-based high entropy alloys

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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  • Feng He
  • Bin Han
  • Qingfeng Wu
  • Yang Tong
  • Jincheng Wang


Original languageEnglish
Article number106476
Journal / PublicationIntermetallics
Online published2 May 2019
Publication statusPublished - Jul 2019


L12-phase-strengthened high entropy alloys (HEAs) have shown promising mechanical properties for both high-temperature and cryogenic applications. However, designing L12 phase still strongly relies on the trial-and-error experiments. The current study reported that the L12 phase in face centered cubic (FCC) HEAs is greatly influenced by a sygnergistic effect of Ti and Al. The experimental results showed that a Ti/Al ratio ranging from 0.7 to 2 was required by L12 phase in CoCrFeNi-based HEAs. The present findings provided an efficient guideline for designing L12 phase in the complex concentrated alloys.

Research Area(s)

  • High entropy alloys, Microstructure characterization, Ti/Al ratio, FCC matrix, L12 phase, Alloy design