High-temperature tensile deformation behavior of hot rolled CrMnFeCoNi high-entropy alloy
SCIE
SCOPUS
- Title
- High-temperature tensile deformation behavior of hot rolled CrMnFeCoNi high-entropy alloy
- Authors
- Jang, Min Ji; Praveen, S.; Sung, Hyun Je; Bae, Jae Wung; Moon, Jongun; Kim, Hyoung Seop
- Date Issued
- 2018-01
- Publisher
- ELSEVIER SCIENCE SA
- Abstract
- In the present study, high temperature (700-1100 degrees C) tensile deformation behavior of hot-rolled CrMnFeCoNi high-entropy alloy was investigated. A single face-centered cubic phase was retained in the hot deformed specimens under different deformation conditions. The flow behavior was significantly influenced by temperature and microstructure evolution. A strong temperature dependence of yield stress was observed with a drastic drop in yield strength from 413 MPa at 700 degrees C to 94 MPa at 900 degrees C. A profound increase in ductility was observed above 700 degrees C and a perceptive decrease in ductility was observed above 900 degrees C. Electron backscatter diffraction analysis indicates incomplete dynamic recrystallization at 700 degrees C leading to a significant difference in the flow behavior. (C) 2017 Elsevier B.V. All rights reserved.
- Keywords
- SEVERE PLASTIC-DEFORMATION; DYNAMIC RECRYSTALLIZATION; GRAIN-SIZE; MECHANICAL-PROPERTIES; ELEVATED-TEMPERATURES; CRYSTAL-STRUCTURES; PROCESSING MAPS; CO-CR; MICROSTRUCTURE; FE
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/50421
- DOI
- 10.1016/j.jallcom.2017.09.293
- ISSN
- 0925-8388
- Article Type
- Article
- Citation
- JOURNAL OF ALLOYS AND COMPOUNDS, vol. 730, page. 242 - 248, 2018-01
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