Computational design and initial corrosion assessment of a series of non-equimolar high entropy alloys

Pin Lu*, James E. Saal, Gregory B Olson, Tianshu Li, Sarita Sahu, Orion J. Swanson, G. S. Frankel, Angela Y. Gerard, John R. Scully

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

The integrated computational materials engineering approach has been employed to design a series of four single-phase non-equimolar high entropy alloys (HEAs) with systematically varied compositions (Ni38Fe20CrxMn21–0.5xCo21–0.5x with x = 6, 10, 14, and 22) and corrosion behavior. The HEAs were successfully designed, synthesized and confirmed to possess a single-phase FCC structure. Preliminary electrochemical corrosion characterization was conducted to gain fundamental understanding of the effects of HEA composition on corrosion resistance, which will be utilized to develop mechanistic corrosion models that enable the optimal design of corrosion resistant HEA. HEA containing 6 at.% Cr showed indications of passivity at a relatively low Cr content.

Original languageEnglish (US)
Pages (from-to)12-16
Number of pages5
JournalScripta Materialia
Volume172
DOIs
StatePublished - Nov 2019

Keywords

  • CALPHAD
  • Corrosion
  • High entropy alloy
  • Modeling
  • Phase diagram

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys

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