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

Anna Zykova, Lydmila Kazantceva, Irina Kurzina

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

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 languageEnglish
Title of host publicationProspects of Fundamental Sciences Development, PFSD-2016: Proceedings of the XIII International Conference of Students and Young Scientists
Subtitle of host publicationProceedings of the XIII International Conference of Students and Young Scientists
PublisherAmerican Institute of Physics Inc.
Volume1772
ISBN (Electronic)9780735414303
DOIs
Publication statusPublished - 13 Oct 2016
Event13th International Conference of Students and Young Scientists on Prospects of Fundamental Sciences Development, PFSD 2016 - Tomsk, Russian Federation
Duration: 26 Apr 201629 Apr 2016

Conference

Conference13th International Conference of Students and Young Scientists on Prospects of Fundamental Sciences Development, PFSD 2016
CountryRussian Federation
CityTomsk
Period26.4.1629.4.16

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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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