Abstract
The multi-component system interaction mechanisms associated with ultrafine powders (TiO2 and ZrO2) and fluorine-containing salts (K2ZrF6, Na3AlF6 and Na5Al3F14) with the Al-7%Si melt are studied. The formation of a multi-phase system with a high concentration of crystallization centres (N ≈ 7 · 1012 U/cm3) was identified. We experimentally show that the injection of an ultrafine powders modifying mixture containing refractory metal oxides and fluorine-containing salts into a Al-7%Si melt leads to a significant reduction in the a silicon plate size (by 1.5 times) and the Fe-containing phases (by 4 times). An equal distribution of the eutectic phase (α-Al + β-Si) is established in the Al- 7%Si alloy. As a result of microstructural changes when the modifying mixture was injected, a factor of 2 increase in the Al-7%Si alloy ductility was observed.
Original language | English |
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Title of host publication | Prospects of Fundamental Sciences Development, PFSD-2016: Proceedings of the XIII International Conference of Students and Young Scientists |
Subtitle of host publication | Proceedings of the XIII International Conference of Students and Young Scientists |
Publisher | American Institute of Physics Inc. |
Volume | 1772 |
ISBN (Electronic) | 9780735414303 |
DOIs | |
Publication status | Published - 13 Oct 2016 |
Event | 13th International Conference of Students and Young Scientists on Prospects of Fundamental Sciences Development, PFSD 2016 - Tomsk, Russian Federation Duration: 26 Apr 2016 → 29 Apr 2016 |
Conference
Conference | 13th International Conference of Students and Young Scientists on Prospects of Fundamental Sciences Development, PFSD 2016 |
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Country | Russian Federation |
City | Tomsk |
Period | 26.4.16 → 29.4.16 |
ASJC Scopus subject areas
- Physics and Astronomy(all)