Fundamental design strategies for advancing the development of high entropy alloys for thermo-mechanical application: A critical review

U. S. Anamu, O. O. Ayodele, E. Olorundaisi, B. J. Babalola, P. I. Odetola, A. Ogunmefun, K. Ukoba, T. C. Jen, P. A. Olubambi

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

Nearly three decades since the discovery of high entropy alloys (HEAs), it has greeted a broad interest in the field of materials research as a better alternative to conventional alloy materials due to the exceptional combinatorial properties they offer in terms of lightweight, high-specific strength in elevated temperatures, excellent oxidation and corrosion resistance properties (among others). Leveraging on the “four core effects”: high-entropy effect, sluggish/hysteretic diffusion effect, severe-lattice-distortion effect and cocktail effect which define the special features responsible for their outstanding properties, HEAs have been successfully employed for high-temperature applications in automobile and in the aerospace. An emerging sub-field of HEAs is the incorporation of a secondary strengthening phase that can be provided by the precipitation of intermetallic (IM) compounds to enhance the microstructure which will concomitantly affect the properties of a material (thermal, chemical and mechanical properties) for broader engineering applications. In this article, design concepts brewed from thermo-physical parameters calculation and computational thermodynamics using a CALPHAD-based tool were reviewed as fundamental design strategies in the development of IM-containing HEAs.

Original languageEnglish
Pages (from-to)4833-4860
Number of pages28
JournalJournal of Materials Research and Technology
Volume27
DOIs
Publication statusPublished - 1 Nov 2023

Keywords

  • Fabrication processes
  • High-entropy alloys
  • Intermetallics
  • Materials' properties
  • Phase diagram calculations
  • Theoretical calculations

ASJC Scopus subject areas

  • Ceramics and Composites
  • Biomaterials
  • Surfaces, Coatings and Films
  • Metals and Alloys

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