Synthesis and microstructural characterization of a novel multicomponent equiatomic ZrNbAlTiV high entropy alloy. (November 2016)

• Record Type: Journal Article
• Authors: Vishwanadh, B.; Sarkar, N.; Gangil, S.; Singh, S.; Tewari, R.; Dey, G.K.; Banerjee, S.
• Is Part Of: Scripta materialia. Volume 124(2016)
• Page Start: 146
• Page End: 150
• Publication Date: 2016-11
• Subjects: High entropy alloys -- Focused ion beam -- High resolution electron microscopy -- Rapid solidification -- Phase transformations; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2016.07.018
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: A high entropy alloy containing ZrNbAlTiV in equiatomic ratio was produced by suction casting technique. Cross-sectional microstructure showed equiaxed morphology at the peripheral and dendrite morphology at the center region of the sample. Electron microscopic analysis revealed that the single phase and the dendrite phase have ordered bcc structure and the inter-dendrite phase has hexagonal structure. Compositions of the single phase and dendrites were same as that of the alloy composition, whereas, edges of dendrite and inter-dendrite regions show preferential partitioning of Nb and Zr respectively. These results have been rationalized in terms of cooling rates and interactions among elements. Abstract : Graphical abstract