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

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

doi:10.1016/j.scriptamat.2019.07.003

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

Journal Article · 11 July 2019 · Scripta Materialia

DOI: https://doi.org/10.1016/j.scriptamat.2019.07.003 · OSTI ID:1594061

Lu, Pin ^[1]; Saal, James E. ^[1]; Olson, Gregory B. ^[1]; Li, Tianshu ^[2]; Sahu, Sarita ^[2]; Swanson, Orion J. ^[2]; Frankel, G. S. ^[2]; Gerard, Angela Y. ^[3]; Scully, John R. ^[3]

QuesTek Innovations, LLC, Evanston, IL (United States)
The Ohio State Univ., Columbus, OH (United States). Fontana Corrosion Center
Univ. of Virginia, Charlottesville, VA (United States). Center for Electrochemical Science and Engineering

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 ($$Ni_{38}Fe_{20}Cr_xMn_{21-0.5x}Co_{21-0.5x}$$ 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.

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Research Organization:: QuesTek Innovations, LLC, Evanston, IL (United States); Energy Frontier Research Centers (EFRC) (United States). Center for Performance and Design of Nuclear Waste Forms and Containers (WastePD); The Ohio State Univ., Columbus, OH (United States); Univ. of Virginia, Charlottesville, VA (United States)

Sponsoring Organization:: USDOE Office of Science (SC); USDOE

Grant/Contract Number:: SC0016584

OSTI ID:: 1594061

Alternate ID(s):: OSTI ID: 1548584

Journal Information:: Scripta Materialia, Vol. 172, Issue C; ISSN 1359-6462

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 40 works

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