The Effect of Sr, Ti, and B on the Crystallization Process and Mechanical Properties of the AlSi9Cu3(Fe) Alloy.

This article presents studies on the effect of Sr and TiB on the crystallization process, mechanical properties, hardness, and density index of the Al-Si alloy from the EN AC-46000 group, with a narrowed chemical composition, produced by die-casting and HPDC (high-pressure die casting) technology. The research used the Box-Wilson method to design the experiment and stepwise multiple regression. To identify the optimal amount of Sr and Ti in the analyzed alloy that would simultaneously guarantee the maximization of UTS, YS, A, and HBW and the minimization of the DI (density index), multi-criteria optimization was performed.

Effect of Degassing Parameters on Mechanical Properties of EN AC-46000 Gravity Die Castings.

The article is devoted to the optimization of the degassing parameters of the AlSi9Cu3(Fe) alloy. The alloy was degassed with a solid degasser (Ecosal) and nitrogen or argon. The variable parameters were time and type of degasser.