Nano-scale structural evolution of quaternary AlCrFeNi based high entropy alloys by the addition of specific minor elements and its effect on mechanical characteristics
| Autor: | Elyorjon Jumaev, Gian Song, Soon-Jik Hong, Sang Chul Mun, Muhammad Aoun Abbas, Ki Buem Kim |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Mechanical Engineering High entropy alloys Alloy Metals and Alloys 02 engineering and technology engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Grain size 0104 chemical sciences Mechanics of Materials Phase (matter) Volume fraction Nano Materials Chemistry engineering Lamellar structure Composite material 0210 nano-technology Eutectic system |
| Zdroj: | Journal of Alloys and Compounds. 868:159217 |
| ISSN: | 0925-8388 |
| DOI: | 10.1016/j.jallcom.2021.159217 |
| Popis: | The AlCrFeNi eutectic high entropy alloys have been developed by adding specific minor elements such as 1, 3, 5 at% of Mo and Ti to analyze the mechanical behavior with double phase strengthening. The X-ray diffraction results illustrate that the crystal structure includes dual phases such as B2 and BCC. Regarding on the compositional variation, the formation of eutectic structure was observed by adding minor elements. The detailed investigation of nano structural evolution of the alloy identified that the morphology of nanoscale Al-Ni-rich B2 phase and Cr-Fe-rich A2 phase have a high degree of coherence in dendritic and lamellar regions. As the result of volume fraction changes and variation in grain size on the nanoscale with the addition of minor elements, the enhancement of mechanical properties confirmed the high-temperature hardness behavior of the alloys. In this study, nanoscale features of the AlCrFeNi based HEAs and mechanical characteristics were explored in detail. |
| Databáze: | OpenAIRE |
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