Evolution of Fragmented Fe-Intermetallic Compounds in the Semi-Solid State of Al-Mg-Si-Fe Alloys by Deformation Semi-Solid Forming Process
| Autor: | Chakkrist Phongphisutthinan, Equo Kobayashi, Tatsuo Sato, Hiroyasu Tezuka |
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| Rok vydání: | 2012 |
| Předmět: |
Materials science
Alloy Intermetallic Forming processes chemistry.chemical_element engineering.material Condensed Matter::Materials Science Chemical engineering chemistry Aluminium Metastability Phase (matter) engineering Condensed Matter::Strongly Correlated Electrons Deformation (engineering) Semi solid |
| Zdroj: | ICAA13 Pittsburgh ISBN: 9783319482255 ICAA13: 13th International Conference on Aluminum Alloys |
| DOI: | 10.1007/978-3-319-48761-8_277 |
| Popis: | Fe-intermetallic compounds are commonly considered as a harmful phase in the recycled aluminum alloys. The Deformation Semi-Solid Forming (D-SSF) process has advantages to modify these harmful compounds into more favorable particles by thermo-mechanical deformation and subsequently heating to the semi-solid state. The evolution of fragmented Fe-intermetallic compounds of the Al-Mg-Si-Fe alloy was investigated during heating to various semi-solid temperatures. The fragmented Fe-intermetallic compound was transformed into the polyhedral shape in the initial stage and subsequently spheroidized shape at the low semi-solid temperatures between 580–610°C. At temperatures higher than 613°C, fragmented Fe-intermetallic compounds completely melt into the liquid phase with long holding time. The Fe-intermetallic compounds are stable as solid phase at low semi-solid temperature and metastable at high semi-solid temperature. |
| Databáze: | OpenAIRE |
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