Microstructure and texture evolution during severe plastic deformation of CrMnFeCoNi high-entropy alloy

Werner Skrotzki, A. Pukenas, B. Joni, E. Odor, T. Ungar, Anton Hohenwarter, Reinhard Pippan, Easo P. George

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22 Citations (Scopus)

Abstract

An equiatomic high-entropy alloy CrMnFeCoNi was severely deformed at room temperature by high pressure torsion up to shear strains of about 170. Its microstructure and texture were analyzed by X-ray diffraction (X-ray line profile analysis and X-ray microdiffraction, respectively). It is shown that at a shear strain of about 20 a steady state domain/grain size of 24 nm and a dislocation density of 3 × 1016 m−2 is reached, while the twin density goes over a maximum of 2% at this strain. The texture developed is typical for sheared face-centred cubic metals, but it is extremely weak. The results are discussed in terms of the mechanisms of deformation, including dislocation slip, twinning and grain boundary sliding.
Original languageEnglish
Article number012028
JournalIOP Conference Series: Materials Science and Engineering
Volume2017
Issue number194
DOIs
Publication statusPublished - 8 May 2017

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