Synthesis and characterization of hexanary Ti–Zr–V–Cr–Ni–Fe high-entropy Laves phase. Issue 5 (6th February 2019)

• Record Type: Journal Article
• Authors: Mishra, Shashank Shekhar; Mukhopadhyay, Semanti; Yadav, Thakur Prasad; Mukhopadhyay, Nilay Krishna; Srivastava, Onkar Nath
• Is Part Of: Journal of materials research. Volume 34:Issue 5(2019)
• Page Start: 807
• Page End: 818
• Publication Date: 2019-02-06
• Subjects: crystallographic structure, -- Laves phase, -- energy storage materials, -- high-entropy alloy; Materials -- Research -- Periodicals; 620.1105
• DOI: 10.1557/jmr.2018.502
• Languages: English
• ISSNs: 0884-2914

Abstract

Abstract: Abstract : Three different high entropy-alloys consisting of six elements (Ti, Zr, V, Cr, Ni, and Fe) with varying Fe content were synthesized by using the RF induction melting technique. All the as-cast, slow-cooled, and rapidly quenched alloys exhibit C14 Laves phase, and it is found to be stable at high temperature. A lattice contraction has been observed with the addition of Fe. To the best of our knowledge, this is the first report on the synthesis of a single-phase high-entropy complex intermetallic compound in the hexanary alloy system. It has been shown that the thermodynamic calculations following Miedema's approach and the parametric approach utilizing several descriptors comprising configurational entropy, mixing enthalpy, atomic size mismatch, electronegativity, and valence electron concentration favor the stability of the high-entropy multicomponent Laves phase.