Influence of the Melting on the Microstructure and Hardness of Mg-2Mn-1Si-0.25Ca alloy
Influence of the element adding sequence on the phase of Mg-2Mn-1Si-0.25Ca alloy was discussed. Microstructure and hardness of Mg-2Mn-1Si-0.25Ca alloy were investigated. The results showed that the microstructure of Mg-2Mn-1Si-0.25Ca alloy included α-Mg,β(Mn) and Mg_2Si particles. When the Mn was added before the Si element, the alloy was comprised of α-Mg, β(Mn), MnSi and Mg_2Si phase. When the Si was added before the Mn element, the alloy was comprised of α-Mg,β(Mn) and Mg_2Si phase and the hardness of this alloy was higher.