@ARTICLE{Brůna_M._Possibilities_2021, author={Brůna, M. and Galčík, M. and Sládek, A. and Martinec, D.}, volume={vol. 66}, number={No 2}, journal={Archives of Metallurgy and Materials}, pages={549-559}, howpublished={online}, year={2021}, publisher={Institute of Metallurgy and Materials Science of Polish Academy of Sciences}, publisher={Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences}, abstract={Submitted work deals with the possibilities of reducing reoxidation by improved gating system design. The result of the reoxidation is the of furled oxide layers – bifilms. During experimental works, non-pressurized and naturally pressurized gating systems designs were introduced and evaluated. Mechanical properties, fracture area, hot tearing index, bifilm index and EDX analysis were used during evaluation. Paper aim is also to clarify the reoxidation phenomenon by visualization with the aid of ProCAST numerical simulation software. Achieved results clearly confirmed the positive effect of the naturally pressurized gating system, main emphasis needs to focus on finding the proper way to reduce the melt velocity. By using vortex element extension at the end of the runner was achieved positive results in term of reoxidation suppression.}, type={Article}, title={Possibilities of Bifilm Amount Reduction in Al Castings by Gating System Design Optimization}, URL={http://journals.pan.pl/Content/118814/PDF/AMM-2021-2-28-Bruna.pdf}, doi={10.24425/amm.2021.135892}, keywords={reoxidation, bifilm, gating system, aluminium alloys, mechanical properties}, }