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Design of a Seven-Component Eutectic High-Entropy Alloy

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Abstract

A eutectic high-entropy alloy with seven components (Fe, Ni, Cr, V, Co, Mn, and Nb) was designed via the melt route guided by CALPHAD predictions. Configurational entropy estimated for the two-phase microstructure qualifies it to be referred to as a high-entropy alloy. When the Nb content exceeded 9.7 at. pct, the microstructure changed from hypoeutectic with primary face-centered cubic phase to hypereutectic with primary Laves phase.

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M.R. Rahul would like to acknowledge B. Nithin, Shah Naishalkumar Sanjay, and Sumanta Samal for useful discussions.

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Authors and Affiliations

  1. Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai, 600036, India

    M. R. Rahul & Gandham Phanikumar

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  1. M. R. Rahul
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  2. Gandham Phanikumar
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Correspondence to Gandham Phanikumar.

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Manuscript submitted January 24, 2019.

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Rahul, M.R., Phanikumar, G. Design of a Seven-Component Eutectic High-Entropy Alloy. Metall Mater Trans A 50, 2594–2598 (2019). https://doi.org/10.1007/s11661-019-05210-3

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