Microstructures and mechanical properties of quasicrystal reinforced AZ31 matrix composites

► RPW processing leads to a significant re-fine microstructure of composite, the average grain size was only about 500 nm after 200 cycles of RPW. ► A good metallurgical bond interface between the quasicrystal particles and the Mg matrix was found in their crystallographic orientation relationship of (101¯0)Mg//2-f. ► The composites exhibited the maximum yield tensile strength of 334 MPa and the maximum ultimate tensile strength of 372 MPa at room temperature, respectively.