Preparation of high-entropy AlCoCrCuFeNiSi alloy powders by gas atomization process
| Autor: | Chih-Chao Yang, Yu-Hsien Chou, Weng Chih-Jung, Joseph Lik Hang Chau, Chi-San Chen |
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| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Materials science Silicon Alloy Metallurgy chemistry.chemical_element 02 engineering and technology engineering.material 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Solid solution strengthening Crystallinity Cooling rate chemistry Scientific method 0103 physical sciences Particle-size distribution engineering General Materials Science 0210 nano-technology |
| Zdroj: | Materials Chemistry and Physics. 202:151-158 |
| ISSN: | 0254-0584 |
| Popis: | High-entropy Al0.5CoCrCuFeNi, Al0.5CoCrCuFeNiSi1.2 and Al0.5CoCrCuFeNiSi2.0 alloy powders were successfully prepared by gas atomization process. All alloy powders have spherical shapes with smooth surfaces. The median particle size distribution D50 is about 27 μm for different alloy compositions. With the addition of silicon, the fast cooling rate of gas atomization process reduce segregation, together with the solid solution strengthening effect increases the hardness of powders from 200.5 to 751.8 Hv without reducing the crystallinity of the alloy. The high-entropy alloy powders which prepared by gas atomization process can be potentially used for additive manufacturing applications. |
| Databáze: | OpenAIRE |
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