Abstract
The state of scientific research on the modification of aluminum-silicon (Al-Si) alloy with strontium, sodium, phosphorus, which are widely employed in industrial alloys, and the modification of Al-Si alloy with intensively studied rare-earth elements (cerium, europium, samarium and others) was analyzed. Scientific articles related to the study of the effect of modifiers on the mechanical properties, mainly on the strength and ductility of hypoeutectic, eutectic and hypereutectic alloys was considered. On the basis of a literary data analysis, ways of improving the mechanical properties have been proposed by jointly modifying several elements, the possibility of forming the solely eutectic structure in the hypereutectic composition alloy 0.01 wt% strontium (Sr) modified and directionally crystallized at a rate that provides paired growth of the eutectic components is noted. This composition of Al-Si alloy has superfine-grained eutectic structure, its strength and ductility exceed the mechanical properties of Al-Si alloys obtained by other techniques.
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