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Deformation Induced Structure and Property Changes in a Nanostructured Multiphase CrMnFeCoNi High-Entropy Alloy

Affiliation
Erich-Schmid-Institute of Materials Science, Austrian Academy of Sciences, Jahnstraße 12, 8700 Leoben, Austria
Schuh, Benjamin;
Affiliation
Department of Materials Science, Montanuniversität Leoben, Jahnstraße 12, 8700 Leoben, Austria
Issa, Inas;
ORCID
0000-0003-0415-4384
Affiliation
Erich-Schmid-Institute of Materials Science, Austrian Academy of Sciences, Jahnstraße 12, 8700 Leoben, Austria
Müller, Timo;
ORCID
0000-0002-0489-8167
Affiliation
Chair of Nonferrous Metallurgy, Montanuniversität Leoben, Franz-Josef-Straße 18, 8700 Leoben, Austria
Kremmer, Thomas;
ORCID
0000-0003-1917-4978
Affiliation
Erich-Schmid-Institute of Materials Science, Austrian Academy of Sciences, Jahnstraße 12, 8700 Leoben, Austria
Gammer, Christoph;
Affiliation
Erich-Schmid-Institute of Materials Science, Austrian Academy of Sciences, Jahnstraße 12, 8700 Leoben, Austria
Pippan, Reinhard;
ORCID
0000-0001-9827-9828
Affiliation
Department of Materials Science, Montanuniversität Leoben, Jahnstraße 12, 8700 Leoben, Austria
Hohenwarter, Anton

A nanocrystalline CrMnFeCoNi high-entropy alloy produced using severe plastic deformation using high-pressure torsion was annealed at selected temperatures and times (450 °C for 1 h and 15 h and at 600 °C for 1 h), causing a phase decomposition into a multi-phase structure. The samples were subsequently deformed again by high-pressure torsion to investigate the possibility of tailoring a favorable composite architecture by re-distributing, fragmenting, or partially dissolving the additional intermetallic phases. While the second phase in the 450 °C annealing states had high stability against mechanical mixing, a partial dissolution could be achieved in the samples subjected to 600 °C for 1 h.

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