Mechanical behavior and solid solution strengthening model for face-centered cubic single crystalline and polycrystalline high-entropy alloys
| Autor: | Jongun Moon, Min Ji Jang, Je-Hyun Lee, Hyoung Seop Kim, Jeong Min Park, Jae Wung Bae, Dami Yim |
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| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Materials science Mechanical Engineering High entropy alloys Alloy Metals and Alloys 02 engineering and technology General Chemistry Cubic crystal system engineering.material 021001 nanoscience & nanotechnology 01 natural sciences Condensed Matter::Materials Science Crystallinity Solid solution strengthening Mechanics of Materials Critical resolved shear stress 0103 physical sciences Materials Chemistry engineering Crystallite Composite material 0210 nano-technology Electron backscatter diffraction |
| Zdroj: | Intermetallics. 98:89-94 |
| ISSN: | 0966-9795 |
| Popis: | In the present work, a solid solution strengthening effect in high-entropy alloys (HEAs) was studied by investigating mechanical characteristics of single crystalline CoCrFeMnNi HEA and a corresponding model was developed. (100) and (110) oriented single crystals of the CoCrFeMnNi alloy were grown and their single crystallinity was identified using X-ray diffraction (XRD), energy dispersive spectroscopy (EDS), and electron backscatter diffraction (EBSD) analyses. The mechanical testing of the single crystalline CoCrFeMnNi alloy was performed and the critical resolved shear stress (CRSS) was obtained. A solid solution strengthening modeling based on the lattice friction stress and an intrinsic residual strain of HEAs was performed. The solid solution strengthening effect of HEAs was verified using the model proposed. |
| Databáze: | OpenAIRE |
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