Composite of medium entropy alloys synthesized using spark plasma sintering. (15th January 2021)

• Record Type: Journal Article
• Authors: Chawake, Niraj; Raman, Lavanya; Ramasamy, Parthiban; Ghosh, Pradipta; Spieckermann, Florian; Gammer, Christoph; Murty, B.S.; Kottada, Ravi Sankar; Eckert, Jürgen
• Is Part Of: Scripta materialia. Number 191(2021)
• Page Start: 46
• Page End: 51
• Publication Date: 2021-01-15
• Subjects: Medium entropy alloy -- Spark plasma sintering -- Composite -- Mechanical alloying; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2020.09.015
• Languages: English
• ISSNs: 1359-6462

Abstract

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. Graphical abstract: Image, graphical abstract