Effect of ultrafine powders on the structural formation processes and mechanical properties of Al-7%Si alloy

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
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	https://doi.org/10.1063/1.4964558
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
Country	Russian Federation
City	Tomsk
Period	26.4.16 → 29.4.16

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1063/1.4964558

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Zykova, A., Kazantceva, L., & Kurzina, I. (2016). Effect of ultrafine powders on the structural formation processes and mechanical properties of Al-7%Si alloy. In Prospects of Fundamental Sciences Development, PFSD-2016: Proceedings of the XIII International Conference of Students and Young Scientists: Proceedings of the XIII International Conference of Students and Young Scientists (Vol. 1772). [030020] American Institute of Physics Inc.. https://doi.org/10.1063/1.4964558

Effect of ultrafine powders on the structural formation processes and mechanical properties of Al-7%Si alloy. / Zykova, Anna; Kazantceva, Lydmila; Kurzina, Irina.

Prospects of Fundamental Sciences Development, PFSD-2016: Proceedings of the XIII International Conference of Students and Young Scientists: Proceedings of the XIII International Conference of Students and Young Scientists. Vol. 1772 American Institute of Physics Inc., 2016. 030020.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Zykova, A, Kazantceva, L & Kurzina, I 2016, Effect of ultrafine powders on the structural formation processes and mechanical properties of Al-7%Si alloy. in Prospects of Fundamental Sciences Development, PFSD-2016: Proceedings of the XIII International Conference of Students and Young Scientists: Proceedings of the XIII International Conference of Students and Young Scientists. vol. 1772, 030020, American Institute of Physics Inc., 13th International Conference of Students and Young Scientists on Prospects of Fundamental Sciences Development, PFSD 2016, Tomsk, Russian Federation, 26.4.16. https://doi.org/10.1063/1.4964558

Zykova A, Kazantceva L, Kurzina I. Effect of ultrafine powders on the structural formation processes and mechanical properties of Al-7%Si alloy. In Prospects of Fundamental Sciences Development, PFSD-2016: Proceedings of the XIII International Conference of Students and Young Scientists: Proceedings of the XIII International Conference of Students and Young Scientists. Vol. 1772. American Institute of Physics Inc. 2016. 030020 https://doi.org/10.1063/1.4964558

Zykova, Anna ; Kazantceva, Lydmila ; Kurzina, Irina. / Effect of ultrafine powders on the structural formation processes and mechanical properties of Al-7%Si alloy. Prospects of Fundamental Sciences Development, PFSD-2016: Proceedings of the XIII International Conference of Students and Young Scientists: Proceedings of the XIII International Conference of Students and Young Scientists. Vol. 1772 American Institute of Physics Inc., 2016.

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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.",

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AB - 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.

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