Investigation of microstructure and mechanical properties of AS21 magnesium alloys reinforced with various sn ratio

In this study, alloyed alloys containing 0,5%-1% and 2% Sn to the AS21 alloy were cast in the form of gravity and tensile hardness values were taken. Also OM and SEM images were examined. In the preparation of AS21 magnesium alloy, 98,8% purity magnesium and aluminum were used. Pre alloy material was prepared with the addition of tin added to the AS21 alloy. After this step, our second melting process is prepared for casting process. The experimental material prepared at this stage was prepared as AS21+0.5% Sn, AS21+1% Sn, AS21+2% Sn, respectively. According to experimental results, maximum tensile strength and percentage elongation were determined for the AS21-%.It was also observed that tensile and percent elongation values in the AS21-0,5% Sn alloy were decreased compared with the without Sn.In addition, it was observed that the addition of 2% Sn to the AS21 alloy has no important effect on tensile and elongation. The Mg2Sn phase was dispersed as thin precipitates in the AS21-%1Sn alloy. These fine precipitate particles act as barriers to the motion of dislocations and provide resistance to slip, thereby the strength and hardness were in creased