Annealing-induced hardening in high-pressure torsion processed CoCrNi medium entropy alloy

Annealing-induced hardening in high-pressure torsion processed CoCrNi medium entropy alloy

Nanocrystalline CoCrNi equiatomic alloy processed by high-pressure torsion shows annealing induced hardening at 500 °C and 600 °C. The microstructural characterization indicates the hardening phenomenon is not because of precipitation hardening. The annealing-induced hardening is explained based on...

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Veröffentlicht in:Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2018-09, Vol.734, p.338-340
Hauptverfasser: Praveen, S., Bae, Jae Wung, Asghari-Rad, Peyman, Park, Jeong Min, Kim, Hyoung Seop
Format: Artikel
Sprache:eng
Schlagworte:
Alloys
Annealing
CoCrNi equiatomic alloy
Dislocation density
Entropy
Grain boundaries
Hardening
High-pressure torsion
Mechanics
Medium entropy alloys
Precipitation hardening
Pressure
Solids
Torsion
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Zusammenfassung:Nanocrystalline CoCrNi equiatomic alloy processed by high-pressure torsion shows annealing induced hardening at 500 °C and 600 °C. The microstructural characterization indicates the hardening phenomenon is not because of precipitation hardening. The annealing-induced hardening is explained based on the reduced dislocation density and grain boundaries relaxation.
ISSN:0921-5093
1873-4936
DOI:10.1016/j.msea.2018.07.107