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Composite of medium entropy alloys synthesized using spark plasma sintering
Date Issued
15-01-2021
Author(s)
Chawake, Niraj
Raman, Lavanya
Ramasamy, Parthiban
Ghosh, Pradipta
Spieckermann, Florian
Gammer, Christoph
Murty, B. S.
Indian Institute of Technology, Madras
Eckert, Jürgen
Abstract
A composite of two different medium entropy alloys (MEAs, i.e., CoCrFeNi and AlCoCrFe) was synthesized using ball milling and spark plasma sintering. The composite microstructure contains a homogenous distribution of fcc and bcc phases with submicron-sized grains and exhibits excellent microstructural and phase stability even after 100 h heat treatment at 800 °C. The composite provides a combination of high compressive strength, adequate plastic strain, and multiple strain-hardening stages at room temperature. This first exploratory study on a MEA composite can be used as a template to other systems and illustrates the feasibility of combining two or more MEAs.
Volume
191