Compound formation and microstructure of as-cast high entropy aluminums
The aim of this work is to study the microstructure of four high entropy alloys (HEAs) produced by large scale vacuum die casting. AlCuMnNiSiZn, AlCuMnFeSiTiZn, AlCuFeMnSiVZr, and AlCaCuNiSiTi alloys formed a mixture of different structures, containing intermetallic compound (IC) and solid solution...
| Autores: | , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2018 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/177775 |
| Acceso en línea: | http://hdl.handle.net/10261/177775 |
| Access Level: | acceso abierto |
| Palabra clave: | Complex concentrated alloys Thermo-Calc Intermetallic compounds Microstructure Lightweight high entropy alloys |
| Sumario: | The aim of this work is to study the microstructure of four high entropy alloys (HEAs) produced by large scale vacuum die casting. AlCuMnNiSiZn, AlCuMnFeSiTiZn, AlCuFeMnSiVZr, and AlCaCuNiSiTi alloys formed a mixture of different structures, containing intermetallic compound (IC) and solid solution (SS) phases. The phases observed in the casting alloys were compared with the equilibrium phases predicted by Thermo-Calc. The measured densities varied from 3.33 g/cm to 5.07 g/cm and microhardness from 437 Hv to 887 Hv. Thus, the microhardness and estimated strength/density ratios are significantly higher than other lightweight high entropy alloys (LWHEAs). |
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