In situ WAl12 particle-reinforced Al matrix composites synthesized by combining mechanical alloying and vacuum hot pressing technology

► In situ WAl12 intermetallic is a novel promising reinforcement. ► WAl12 particles reinforced Al-MMC was fabricated by MA and HP technology. ► By increasing the weight percentage of WAl12, both density and microhardness increased significantly. ► Its tensile strength was up to 487 MPa at room temperature, and up to 248 MPa at 200 °C.