A preparation method for a local
ceramic reinforced aluminum matrix composite wear-resistant part includes: firstly, preparing a
zirconia toughened alumina (ZTA) preformed part; secondly, fixing the ZTA preformed part in a die
forging die and vacuumizing the interior of the die
forging die; and finally, injecting aluminum liquid into a runner of the die
forging die, squeezing the aluminum liquid into a cavity of the die forging die under
high pressure first, then using the forging die for forging and
stamping until the aluminum liquid completely solidifies, and separating a male die from a female die so as to fetch the composite wear-resistant part out from the forging die when composite materials completely solidify. By using the preparation method, not only wear-resistant performance of the surface of the composite wear-resistant part is improved, but also effects of the character of high
toughness of ZTA particles are simultaneously brought into full play, and probability of internal fragmentation of
ceramic is greatly reduced, overall
impact resistance of the composite wear-resistant part is improved, and furthermore due to the fact that the composite wear-resistant part is prepared through a method of combining
low vacuum die forging with
extrusion die forging, the aluminum liquid can be fully composited with the ZTA particles, and the number of internal interstices of the wear-resistant part is decreased. Accordingly, overall intensity of the composite wear-resistant part is improved, and service life of the composite wear-resistant part is prolonged.