Austrian Academy of Sciences - Erich Schmid Institute of Materials Science; Montanuniversität Leoben - Department of Materials Science
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.
Keywords: Medium Entropy alloy, Spark plasma sintering, Composite, mechanical alloying
Chawake, Niraj and Raman, Lavanya and Ramasamy, Parthiban and Ghosh, Pradipta and Spieckermann, Floarian and Gammer, Christoph and Murty, B.S. and Kottada, Ravi Sankar and Eckert, Jürgen, Composite of Medium Entropy Alloys Synthesized Using Spark Plasma Sintering. Available at SSRN: https://ssrn.com/abstract=3680365 or http://dx.doi.org/10.2139/ssrn.3680365
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