Effect of Vanadium on the Microstructure and Properties of Magnesium Alloy for Electronics and Electrics

A new type of magnesium alloy containing vanadium was prepared with the vanadium powder effectively added into the cast AZ81 parent magnesium alloy by friction stir processing,and the microstructure,phase composition,micro-texture and mechanical properties of the alloy were tested and analyzed. The results show that the new-typed alloy is with tiny grain and composed of α-Mg matrix and a small quantity of the Mg₁₇Al₁₂ and Al3V phase. Compared with the parent magnesium alloy,the internal microstructure of the new-typed magnesium alloy containing vanadium is obviously weakened with significantly improved mechanical properties. The maximum of texture of the new-typed magnesium alloy is decreased by 30%,and the tensile strength,yield strength and elongation after fracture of the alloy can be increased by 27%,60% and 82%,respectively. Moreover,the fracture mode of the new-typed alloy changes from mixed fracture to ductile fracture.