Developing magnesium-based multi-component alloys with high deformation capacity

The interest in the use of magnesium which has 1.74 g / cm3 density, is increasing day by day in order to reduce vehicle weight in the transport sector, where energy saving is extremely important. Various elements are added to improve the deformation capacity and other mechanical properties of magnesium with HCP crystal structure and limited number of slip systems. The dissolving alloy elements in magnesium change the stacking fault energy (SFE) in different planes of magnesium, and manipulate the inactive planes of magnesium normally not active. Thus, it is aimed to increase the deformation capacity of magnesium, to increase the strength due to the particles formed in the magnesium and by the help of these particles to remove the texture which cannot be removed in the magnesium and most of its alloys. In order to investigate the increase in the deformation capacity of magnesium, alloy systems were formed by using Zn, Ce, Y, Sn elements based on the information in the literature. After the metallographic investigation and mechanical tests of the alloys produced in the controlled atmosphere, the alloy systems with the highest deformation capacity were identified as Mg-2Zn-2Y and Mg-2Zn-2Ce. According to the results obtained from high-temperature free inflation tests (gas-forrming) of these two alloys, the system has the highest deformation capacity is Mg 2Zn-2Ce alloy system. In addition to these alloys, there are compositions of Mg-2Sn-2Y, Mg-2Y-2Zn-1Sn investigated as samples obtained from smaller casted amounts and are remarkable in terms of their mechanical properties.