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

W. Skrotzki, A. Pukenas, B. Joni, E. Odor, T. Ungár, A. Hohenwarter, R. Pippan, E. P. George

Research output: Contribution to journalConference article

12 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
Volume194
Issue number1
DOIs
Publication statusPublished - May 8 2017
Event7th International Conference on Nanomaterials by Severe Plastic Deformation, NanoSPD 2017 - Sydney, Australia
Duration: Jul 2 2017Jul 7 2017

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Shear strain
Plastic deformation
Entropy
Textures
X rays
Grain boundary sliding
Microstructure
Twinning
Dislocations (crystals)
Torsional stress
Metals
X ray diffraction
Temperature

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)

Cite this

Microstructure and texture evolution during severe plastic deformation of CrMnFeCoNi high-entropy alloy. / Skrotzki, W.; Pukenas, A.; Joni, B.; Odor, E.; Ungár, T.; Hohenwarter, A.; Pippan, R.; George, E. P.

In: IOP Conference Series: Materials Science and Engineering, Vol. 194, No. 1, 012028, 08.05.2017.

Research output: Contribution to journalConference article

Skrotzki, W. ; Pukenas, A. ; Joni, B. ; Odor, E. ; Ungár, T. ; Hohenwarter, A. ; Pippan, R. ; George, E. P. / Microstructure and texture evolution during severe plastic deformation of CrMnFeCoNi high-entropy alloy. In: IOP Conference Series: Materials Science and Engineering. 2017 ; Vol. 194, No. 1.
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