Abstract
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.
Original language | English |
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Pages (from-to) | 86-88 |
Number of pages | 3 |
Journal | Materials Letters |
Volume | 202 |
DOIs | |
State | Published - 1 Sep 2017 |
Externally published | Yes |
Keywords
- High-entropy alloy
- High-pressure torsion
- Metals and alloys
- Microstructure
- Phase transformation