Method for preparing amorphous particle-modified magnesium alloy surface-gradient composites

A method for preparing amorphous particle-modified magnesium alloy surface-gradient composites, wherein the method comprises steps of:

• S1 weighing pure magnesium, pure zinc, pure aluminum, pure copper, Mg-5 wt % Mn alloy, and FeCrMoBC amorphous alloy particles;
• S2 holding the temperature at 150˜350° C. for the FeCrMoBC amorphous alloy particles weighed at step (1);
• S3 mixing the pure magnesium, pure zinc, pure aluminum, pure copper, and Mg-5 wt % Mn alloy weighed at step (1), putting the mixture in a melting and heating furnace under continuous protective gases, gradually raising temperature to 720˜760° C. and melting at a constant temperature for 15˜25 min to obtain a magnesium alloy melt;
• and
• S4 cooling the magnesium alloy melt obtained at step (3) to 600˜635° C., starting mechanical stirring till the temperature is cooled to 570˜615° C., slowly adding the FeCrMoBC amorphous alloy particles obtained at step (2), holding for 2˜5 min after mixing evenly, and cooling the crucible with water to obtain an amorphous particle-modified magnesium alloy surface-gradient composite.