Macro- and micro- structure and mechanical properties of QSn6.5-0.1 alloy in unidirectional solidification horizontal continuous casting

The effects of unidirectional solidification horizontal continuous casting on macrostructure, microstructure, Sn content distribution of the QSn6.5-0.1 alloy were investigated. Mechanical properties and other properties also were studied experimentally. The following conclusions were obtained. The final grains of the alloy grow bigger and the column crystals are arranged along with axis. Microstructure is more uniform. And the inverse-segregation and micro-shrinkage phenomenon are reduced. The ductility and conductivity of the QSn6.5-0.1 alloys are obviously increased, but the limited-strength becomes lower.