Abstract Scope |
In this research were studied possibilities and were received the patterns of structure and properties of magnesium alloy improvement through its modifying by alkaline earth metals. The article scrutinizes separate and shared calcium and barium influence on macro and micro structure of system Mg-Al-Zn alloy. It is demonstrated, that alkaline earth metals were part of the complex intermetallic phases located in the grain center and served as additional centers of crystallization. The research provides patterns of separate and shared influence of alkaline earth metals on the casting properties complex from magnesium alloy. It is demonstrated that complex modifying (0,1 % Са + 0,1 % Ва) of magnesium alloy decreased the number of its structural components by a factor of 1,5, while increasing alloy durability by 20 %, plasticity by a factor of 2 and prolonged heat-resistence - 1,5.
Keywords: magnesium alloys, modifying, structure, alkaline earth metals, crystallization |