Superplasticity in Severely Deformed High-Entropy Alloys

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  • Shahmir Hamed
    Department of Materials Engineering, Tarbiat Modares University
  • Mehranpour Mohammad Sajad
    School of Metallurgy and Materials, College of Engineering, University of Tehran
  • Kawasaki Megumi
    School of Mechanical, Industrial and Manufacturing Engineering, Oregon State University
  • Langdon Terence G.
    Materials Research Group, Department of Mechanical Engineering, University of Southampton

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説明

<p>High-entropy alloys (HEAs) are a new class of material producing superior properties that have a potential for replacing many structural materials in industry. Single-phase solid solution HEAs with face-centered cubic crystal structure show significant ductility and toughness over a wide temperature range including at cryogenic temperatures. Nevertheless, the occurrence of decomposition at elevated temperatures is challenging for many applications. These materials reveal sluggish diffusion and therefore high thermal stability so that processing by severe plastic deformation gives increased kinetics of decomposition and leads to fine-multiphase microstructures which provide a potential for achieving superior superplastic elongations. The present review is designed to examine the available superplastic data for HEAs and thereby to compare the behavior of HEAs with conventional superplastic alloys.</p>

収録刊行物

  • MATERIALS TRANSACTIONS

    MATERIALS TRANSACTIONS 64 (7), 1526-1536, 2023-07-01

    公益社団法人 日本金属学会

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