Aluminum Alloy Selection for In Situ Composite Production by Oxygen Blowing
We considered the possibility of using AlMg10, AlCu5, AlCu5Cd, AlSi12, and AlSi7Zn9 as initial alloys for in situ composites production via oxygen blowing of hydrogen pre-saturated melts as an alternative to AlSi7Fe. The production process provides the destruction of the oxide film on the melt surfa...
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MDPI AG
2021-12-01
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| Online Access: | https://www.mdpi.com/2075-4701/11/12/1984 |
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| author | Arkady Finkelstein Arseny Schaefer Nikolay Dubinin |
| author_facet | Arkady Finkelstein Arseny Schaefer Nikolay Dubinin |
| author_sort | Arkady Finkelstein |
| collection | DOAJ |
| description | We considered the possibility of using AlMg10, AlCu5, AlCu5Cd, AlSi12, and AlSi7Zn9 as initial alloys for in situ composites production via oxygen blowing of hydrogen pre-saturated melts as an alternative to AlSi7Fe. The production process provides the destruction of the oxide film on the melt surface. It was demonstrated that oxide film on AlMg10 alloy did not get destroyed due to the heavy thickness because of the porous structure that contributed to its kinetically based growth. Copper-bearing alloys AlCu5 and AlCu5Cd were characterized by the low-strength oxide film and got destroyed before floating, causing the oxide porosity. Silicon-bearing alloys AlSi12 and AlSi7Zn9 provide the dense structure, which makes it clear that to understand the Pilling–Bedworth ratio for basic alloying elements is required for a non-destructed oxide void floating and shall exceed the range of 1.64–1.77. However, the oxide film in silicon-bearing alloys under investigation did not get destroyed into fine particles. AlSi7Zn9 alloy had inclusions of smaller sizes as compared to AlSi12 alloy due to the ZnO that embrittled the film, but which were grouped to form oxide islands. Moreover, zinc was evaporated during blowing. The mechanical properties of the produced composites were based on the alloys under investigation which were in line with their structures. A higher value of the Pilling–Bedworth ratio of impurities was required for fine crushing: The conventionally used AlSi7Fe alloy met this requirement and was therefore considered to be the optimum version. |
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| format | Article |
| id | doaj.art-16fb5b921d86471da3bbbdaca4cd57d8 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-10T03:33:55Z |
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| spelling | doaj.art-16fb5b921d86471da3bbbdaca4cd57d82023-11-23T09:33:51ZengMDPI AGMetals2075-47012021-12-011112198410.3390/met11121984Aluminum Alloy Selection for In Situ Composite Production by Oxygen BlowingArkady Finkelstein0Arseny Schaefer1Nikolay Dubinin2Department of Foundry Engineering and Strengthening Technologies, Ural Federal University, 620002 Ekaterinburg, RussiaDepartment of Foundry Engineering and Strengthening Technologies, Ural Federal University, 620002 Ekaterinburg, RussiaDepartment of Foundry Engineering and Strengthening Technologies, Ural Federal University, 620002 Ekaterinburg, RussiaWe considered the possibility of using AlMg10, AlCu5, AlCu5Cd, AlSi12, and AlSi7Zn9 as initial alloys for in situ composites production via oxygen blowing of hydrogen pre-saturated melts as an alternative to AlSi7Fe. The production process provides the destruction of the oxide film on the melt surface. It was demonstrated that oxide film on AlMg10 alloy did not get destroyed due to the heavy thickness because of the porous structure that contributed to its kinetically based growth. Copper-bearing alloys AlCu5 and AlCu5Cd were characterized by the low-strength oxide film and got destroyed before floating, causing the oxide porosity. Silicon-bearing alloys AlSi12 and AlSi7Zn9 provide the dense structure, which makes it clear that to understand the Pilling–Bedworth ratio for basic alloying elements is required for a non-destructed oxide void floating and shall exceed the range of 1.64–1.77. However, the oxide film in silicon-bearing alloys under investigation did not get destroyed into fine particles. AlSi7Zn9 alloy had inclusions of smaller sizes as compared to AlSi12 alloy due to the ZnO that embrittled the film, but which were grouped to form oxide islands. Moreover, zinc was evaporated during blowing. The mechanical properties of the produced composites were based on the alloys under investigation which were in line with their structures. A higher value of the Pilling–Bedworth ratio of impurities was required for fine crushing: The conventionally used AlSi7Fe alloy met this requirement and was therefore considered to be the optimum version.https://www.mdpi.com/2075-4701/11/12/1984in situ compositealuminum alloysoxide filmoxygen blowingPilling–Bedworth ratiooxide island |
| spellingShingle | Arkady Finkelstein Arseny Schaefer Nikolay Dubinin Aluminum Alloy Selection for In Situ Composite Production by Oxygen Blowing Metals in situ composite aluminum alloys oxide film oxygen blowing Pilling–Bedworth ratio oxide island |
| title | Aluminum Alloy Selection for In Situ Composite Production by Oxygen Blowing |
| title_full | Aluminum Alloy Selection for In Situ Composite Production by Oxygen Blowing |
| title_fullStr | Aluminum Alloy Selection for In Situ Composite Production by Oxygen Blowing |
| title_full_unstemmed | Aluminum Alloy Selection for In Situ Composite Production by Oxygen Blowing |
| title_short | Aluminum Alloy Selection for In Situ Composite Production by Oxygen Blowing |
| title_sort | aluminum alloy selection for in situ composite production by oxygen blowing |
| topic | in situ composite aluminum alloys oxide film oxygen blowing Pilling–Bedworth ratio oxide island |
| url | https://www.mdpi.com/2075-4701/11/12/1984 |
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