Temperature- and strain-dependent thermally-activated deformation mechanism of a ferrous medium-entropy alloy
SCIE
SCOPUS
- Title
- Temperature- and strain-dependent thermally-activated deformation mechanism of a ferrous medium-entropy alloy
- Authors
- Lee, Jungwan; Moon, Jongun; Bae, Jae Wung; Park, Jeong Min; Kwon, Hyeonseok; Kato, Hidemi; Kim, Hyoung Seop
- Date Issued
- 2021-07
- Publisher
- ELSEVIER SCI LTD
- Abstract
- In this study, quasi-static tensile properties of Fe60Co15Ni15Cr10 (at%) ferrous medium-entropy alloy at 298 K and 77 K were investigated in terms of thermally-activated deformation mechanism. Relatively high strain rate sensitivity and low activation volume were estimated using strain rate jump tests at 77 K where deformationinduced martensitic transformation took place, compared to those at 298 K. Different rate-controlling mechanisms were identified for early and latter deformation at both temperatures considering the plastic strain. Dislocation behaviors, e.g., cross-slip or dislocation accumulation, based on the thermally-activated deformation mechanism, support the outstanding cryogenic tensile properties of the present alloy.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/109048
- DOI
- 10.1016/j.intermet.2021.107202
- ISSN
- 0966-9795
- Article Type
- Article
- Citation
- INTERMETALLICS, vol. 134, 2021-07
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- There are no files associated with this item.
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