Synthesis and Phase Investigation of Equiatomic AlCrFeMnNi Alloys Dispersed with Partially Stabilized Zirconia for Nuclear Applications

Abstract:

Materials performance plays a pivotal role to the smooth operation of present and future nuclear energy systems operating in severe irradiation environment in reactors. Therefore selection of structural materials with the desired properties is vital for this field of applications. The present work reports the effect of milling time during mechanical alloying of a novel Oxide Dispersed metal matrix composite consisting of multi-component AlCrFeMnNi high entropy alloy system with minor addition of Partially Stabilized Zirconia (PSZ) (1 wt.%). The main focus of this work is to understand the phase stability behaviour during mechanical alloying. High Entropy Alloy AlCrFeMnNi with Partially Stabilized Zirconia (PSZ) as Dispersoid phase was prepared by mechanical alloying. For study of phases, milled powder was investigated through X-Ray diffraction technique followed by Scanning Electron Microscopy for microstructural morphology. The study reveals that PSZ Dispersed AlCrFeMnNi alloy mainly consists of BCC (Fe Type) and FCC (Ni Type) mixed structure. At the end of 30 h lattice strain and crystallite size were measured to be 0.738 % and 13 nm respectively.

• Periodical: Materials Science Forum (Volume 978)
• Pages: 145-151
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.978.145
• Online since: February 2020
• Authors: Kasi Raja Rao*, Sudip Kumar Sinha
• Keywords: High Entropy Alloys, Nuclear Application, Oxide Dispersion, Partially Stabilized Zirconia, Scanning Electron Microscope (SEM), X-Ray Diffraction

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