Monocrystalline elastic constants and their temperature dependences for equi-atomic Cr-Mn-Fe-Co-Ni high-entropy alloy with the face-centered cubic structure
| Autor: | Takeshi Teramoto, Ryo Ito, Kazuki Yamada, Katsushi Tanaka |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Condensed matter physics Liquid helium Mechanical Engineering Alloy Metals and Alloys 02 engineering and technology engineering.material Cubic crystal system 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences law.invention Monocrystalline silicon Shear modulus Condensed Matter::Materials Science Mechanics of Materials Stacking-fault energy law Materials Chemistry engineering Crystallite 0210 nano-technology Spectroscopy |
| Zdroj: | Journal of Alloys and Compounds. 777:1313-1318 |
| ISSN: | 0925-8388 |
| DOI: | 10.1016/j.jallcom.2018.11.052 |
| Popis: | The temperature dependences of monocrystalline elastic constants of Cr-Mn-Fe-Co-Ni high entropy alloy with the face-centered cubic (fcc) structure have been experimentally determined using resonance ultrasound spectroscopy from liquid helium temperature to 1173 K. The values of three independent monocrystalline and estimated polycrystalline elastic constants are fitted using the Varshni equation so that one can obtain the values at any temperatures. The elastic anisotropy of the alloy is characterized by a relatively large value of anisotropy factor of shear modulus, which is closely related to a small value of stacking fault energy of this alloy. The monocrystalline elastic constants also indicate that a relatively strong directional interatomic bonding exists in the present high-entropy alloy. |
| Databáze: | OpenAIRE |
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