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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Published inMaterials science & engineering. A, Structural materials : properties, microstructure and processing Vol. 734; pp. 338 - 340
Main Authors Praveen, S., Bae, Jae Wung, Asghari-Rad, Peyman, Park, Jeong Min, Kim, Hyoung Seop
Format Journal Article
LanguageEnglish
Published Lausanne Elsevier B.V 12.09.2018
Elsevier BV
Subjects
Alloys
Annealing
CoCrNi equiatomic alloy
Dislocation density
Entropy
Grain boundaries
Hardening
High-pressure torsion
Mechanics
Medium entropy alloys
Precipitation hardening
Pressure
Solids
Torsion
Grain boundaries
Dislocation density
Hardening
CoCrNi equiatomic alloy
High-pressure torsion
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Summary: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