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. Al40Cu15Mn5Ni5Si20Zn15, Al45Cu15Mn5Fe5Si5Ti5Zn20, Al35Cu5Fe5Mn5Si30V10Zr10, and Al50Ca5Cu5Ni10Si20Ti10 alloys formed a mixture of different structures, containing interm...
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MDPI AG
2018-03-01
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| Series: | Metals |
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| Online Access: | http://www.mdpi.com/2075-4701/8/3/167 |
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doaj-226964cec8f14184b19ccb4b808cc69f2020-11-24T22:37:14ZengMDPI AGMetals2075-47012018-03-018316710.3390/met8030167met8030167Compound Formation and Microstructure of As-Cast High Entropy AluminumsJon Mikel Sanchez0Iban Vicario1Joseba Albizuri2Teresa Guraya3Natalia E. Koval4Jose Carlos Garcia5Department of Foundry and Steel Making, Tecnalia Research & Innovation, 48160 Derio, SpainDepartment of Foundry and Steel Making, Tecnalia Research & Innovation, 48160 Derio, SpainDepartment of Mechanical Engineering, Faculty of Engineering of Bilbao, University of the Basque Country, 48013 Bilbao, SpainDepartment of Mining & Metallurgical Engineering and Materials Science, Faculty of Engineering of Bilbao, University of the Basque Country, 48013 Bilbao, SpainCentro de Física de Materiales CFM/MPC, 20018 San Sebastián, SpainDepartment of Foundry and Steel Making, Tecnalia Research & Innovation, 48160 Derio, SpainThe aim of this work is to study the microstructure of four high entropy alloys (HEAs) produced by large scale vacuum die casting. Al40Cu15Mn5Ni5Si20Zn15, Al45Cu15Mn5Fe5Si5Ti5Zn20, Al35Cu5Fe5Mn5Si30V10Zr10, and Al50Ca5Cu5Ni10Si20Ti10 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−3 to 5.07 g/cm−3 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).http://www.mdpi.com/2075-4701/8/3/167lightweight high entropy alloyscomplex concentrated alloysmicrostructureintermetallic compoundsThermo-Calc |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Jon Mikel Sanchez Iban Vicario Joseba Albizuri Teresa Guraya Natalia E. Koval Jose Carlos Garcia |
| spellingShingle |
Jon Mikel Sanchez Iban Vicario Joseba Albizuri Teresa Guraya Natalia E. Koval Jose Carlos Garcia Compound Formation and Microstructure of As-Cast High Entropy Aluminums Metals lightweight high entropy alloys complex concentrated alloys microstructure intermetallic compounds Thermo-Calc |
| author_facet |
Jon Mikel Sanchez Iban Vicario Joseba Albizuri Teresa Guraya Natalia E. Koval Jose Carlos Garcia |
| author_sort |
Jon Mikel Sanchez |
| title |
Compound Formation and Microstructure of As-Cast High Entropy Aluminums |
| title_short |
Compound Formation and Microstructure of As-Cast High Entropy Aluminums |
| title_full |
Compound Formation and Microstructure of As-Cast High Entropy Aluminums |
| title_fullStr |
Compound Formation and Microstructure of As-Cast High Entropy Aluminums |
| title_full_unstemmed |
Compound Formation and Microstructure of As-Cast High Entropy Aluminums |
| title_sort |
compound formation and microstructure of as-cast high entropy aluminums |
| publisher |
MDPI AG |
| series |
Metals |
| issn |
2075-4701 |
| publishDate |
2018-03-01 |
| description |
The aim of this work is to study the microstructure of four high entropy alloys (HEAs) produced by large scale vacuum die casting. Al40Cu15Mn5Ni5Si20Zn15, Al45Cu15Mn5Fe5Si5Ti5Zn20, Al35Cu5Fe5Mn5Si30V10Zr10, and Al50Ca5Cu5Ni10Si20Ti10 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−3 to 5.07 g/cm−3 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). |
| topic |
lightweight high entropy alloys complex concentrated alloys microstructure intermetallic compounds Thermo-Calc |
| url |
http://www.mdpi.com/2075-4701/8/3/167 |
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