Mg/ZrO2 Metal Matrix Nanocomposites Fabricated by Friction Stir Processing: Microstructure, Mechanical Properties, and Corrosion Behavior

Magnesium (Mg) and its alloys have attached more attention because of their potential as a new type biodegradable metal materials. In this work, AZ31/ZrO 2 nanocomposites with good uniformity were prepared successfully by friction stir processing (FSP). The scanning electron microscope (SEM) transmission (TEM) used to characterize the microstructure composites. mechanical properties, electrochemical corrosion properties biological evaluated. addition, effect reinforced particles (ZrO ) on composite was studied comparing FSP AZ31 Mg alloy. results show that compared base (BM), material achieves homogenization, densification, grain refinement after FSP. combination dynamic recrystallization ZrO leads alloy, average size composites is 3.2 μm. After FSP, c-axis deflected under compression stress shoulder shear pin. ultimate tensile strength (UTS) yield (YS) BM 283 137 MPa, respectively, UTS YS 427 217 respectively. Orowan strengthening are major mechanisms. Moreover, resistance in simulated body fluid alloy improved barrier .