Journal
MATERIALS LETTERS
Volume 202, Issue -, Pages 86-88Publisher
ELSEVIER
DOI: 10.1016/j.matlet.2017.05.065
Keywords
Metals and alloys; High-entropy alloy; High-pressure torsion; Microstructure; Phase transformation
Funding
- Future Material Discovery Project of the National Research Foundation of Korea (NRF) - Ministry of Science, ICT and Future Planning (MSIP) of Korea [NRF-2016M3D1A1023383]
- Increased Competitiveness Program of NUST MISiS [K2-2016-062]
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A deformation-induced phase transformation in a face-centered cubic (FCC) Co20Cr26Fe20Mn20Ni14 high-entropy alloy during cryogenic high-pressure torsion (HPT) discovered in this work is reported. Thermodynamic calculations prove that in the Co20Cr26Fe20Mn20Ni14 alloy, a hexagonal close-packed (HCP) phase is stable at low temperatures. Microstructural and compositional analyses suggest that a diffusionless deformation-induced FCC-to-HCP phase transformation occurred during cryogenic HPT. (C) 2017 Elsevier B.V. All rights reserved.
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