from the conferences organized by TANGER Ltd.
Inoculation of aluminum alloys is performed to improve the mechanical and technological properties of the material. In the case of inoculation, this improvement is mainly due to an increase in chemical and structural homogeneity and a decrease in the tendency to segregate individual elements. The inoculation of hypoeutectic aluminum alloys is carried out with Ti or a combination of Ti and B. These elements are added to the melt with seed salts (eg. K2TiF6, KBF4), seed tablets or in the form of Al-Ti or Al-Ti-B master alloys. Aluminum-titanium-boron master alloys (in the form of Coil / Stick / Waffle / Piglet / Bar) AlTi5B1, AlTi3B1, AlTi5B0.2 are used for refining grain of pure aluminum or aluminum alloys during melting. The paper focuses on the inoculation of AlCu4Mg1 alloy with two types of AlTi3B1 and AlTi5B1 master alloys. To map the effect of these two inoculants, we added different concentrations of these master alloys to the alloy. Subsequently, we monitored the effect on grain size, intermetallic phase fraction and chemical heterogeneity. The alloy after inoculation with stated master alloys was also heat-treated and the effect of heat treatment was evaluated. Microstructural analysis was performed using an optical and scanning electron microscope (SEM).
Keywords: AlCu4Mg1, inoculation, heat treatment, microstructure, segregation© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.