Published October 2019
| Version v1
Journal article
Temperature dependence of the Hall–Petch relationship in CoCrFeMnNi high-entropy alloy
Creators
- 1. School of Materials Science and Engineering, University of Science and Technology of China, Hefei, 230026 (China)
- 2. Laboratory of Fatigue and Fracture for Materials, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016 (China)
- 3. Research Center for Metal Wires, Northeastern University, Shenyang, 110819 (China)
- 4. Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), School of Materials Science and Engineering, Northeastern University, Shenyang, 110819 (China)
- 5. School of Materials Science and Engineering, Shenyang Ligong University, Shenyang, 110159 (China)
- 6. National Engineering Research Center for Equipment and Technology of Cold Strip Rolling, Yanshan University, Qinhuangdao, 066004 (China)
- 7. State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an, 710072 (China)
Description
Single-phase equiatomic CoCrFeMnNi high-entropy alloy (HEA) specimens with three different grain sizes (0.65 μm, 2.1 μm and 105 μm) were processed by cold rolling and annealing treatment. Tensile properties were investigated over a broad temperature range from 77 K to 873 K. Superior strength-ductility balance can be achieved by refining grain size and decreasing temperature. The Hall-Petch relationship was well fitted, and the fitting parameters have a negative relation with temperature. The thermal and athermal contributions to the yield strength were revealed. This work has unveiled the superior mechanical property of HEAs at cryogenic temperatures.
Additional details
Identifiers
- DOI
- 10.1016/j.jallcom.2019.07.357;
- PII
- S0925838819328725;
Publishing Information
- Journal Title
- Journal of Alloys and Compounds
- Journal Volume
- 806
- Journal Page Range
- p. 992-998
- ISSN
- 0925-8388
- CODEN
- JALCEU
INIS
- Country of Publication
- Switzerland
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 55079172
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- ANNEALING; COPPER BASE ALLOYS; CRYOGENICS; DUCTILITY; ENTROPY; GRAIN SIZE; YIELD STRENGTH
- Descriptors DEC
- ALLOYS; COPPER ALLOYS; HEAT TREATMENTS; MECHANICAL PROPERTIES; MICROSTRUCTURE; PHYSICAL PROPERTIES; SIZE; TENSILE PROPERTIES; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT ALLOYS
Optional Information
- Copyright
- Copyright (c) 2019 Elsevier B.V. All rights reserved.