from the conferences organized by TANGER Ltd.
Aluminum alloys as hypoeutectic AlSi9Mg alloy have at microstructure a granular and acicular β phase, with α phase as matrix. The hard, irregular, often pointed β phase is responsible for the poor mechanical properties of said alloy. This composition is responsible for Al-Si alloy's low strength parameters. This study presents the results of modification of an AlSi9Mg alloy with strontium, boron and titanium in different ranges produced as a melted modifier added as powders and as rod. The influence of the analyzed additions on the elongation of the silumin was presented in graphs. The used treatments of a hypoeutectic AlSi9Mg alloy improved the alloy's properties. The results of the tests indicate that the elongation of the modified alloy are determined by the sequence in which the components are introduced to the alloy.
Keywords: Al-Si alloy, silumin, modification, mechanical properties© 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.