Fine tuning of tensile properties in CrCoNi medium entropy alloy through cold rolling and annealing
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SCOPUS
- Title
- Fine tuning of tensile properties in CrCoNi medium entropy alloy through cold rolling and annealing
- Authors
- Sathiyamoorthi, P.; Asghari-Rad, P.; Bae, J.W.; Kim, H.S.
- Date Issued
- 2019-10
- Publisher
- ELSEVIER SCI LTD
- Abstract
- In the present study, tensile properties of CrCoNi medium entropy alloy with different microstructures (recovery, partial recrystallization, recrystallization) were investigated by subjecting cold-rolled samples to different annealing conditions. The microstructure of the cold-rolled sample showed the presence of severely deformed grains with several deformation twins. Annealing of the cold-rolled samples at 700 degrees C and above for 60 min led to fully recrystallized microstructure, while annealing at temperatures lower than 700 degrees C led to recovery and partially recrystallized microstructures. The annealed samples showed a typical strength-ductility trade-off with an increasing fraction of recrystallized grains and increasing average grain size in samples with partially recrystallized and fully recrystallized microstructure, respectively. Fine tuning of microstructure led to a remarkable combination of strength (similar to 1 GPa) and uniform elongation (28%) in the sample with partially recrystallized microstructure, which consists of similar to 77% of recrystallized grains with an average recrystallized grain size of similar to 3 mu m.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/100125
- DOI
- 10.1016/j.intermet.2019.106578
- ISSN
- 0966-9795
- Article Type
- Article
- Citation
- INTERMETALLICS, vol. 113, 2019-10
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- There are no files associated with this item.
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