The invention discloses an aluminum
alloy wheel hub and a manufacturing method thereof. The aluminum
alloy wheel hub is formed by
welding a
spoke and a rim through
friction stir welding. The produced vehicle wheel hub is not liable to deform and resistant to high temperatures, is not blistered or deformed when being burnt at the temperature
ranging from 400 DEG C to 500 DEG C and is little in
mass, the weight of the produced vehicle wheel hub is smaller than that of a common wheel hub by 3 pounds, the unit fuel course is increased by 5%, and the braking performance is good; the product
mass is little, strength is high, the tensile strength ranges from 315 MPa to 355 MPa, the yield strength ranges from 230 MPa to 260 MPa, the
impact-resisting capability of the produced wheel hub is improved by 30% compared with that of a forged wheel hub, the
driving safety is ensured, the passing capability under various road conditions is improved, and the acceleration performance and the operation performance of a vehicle are ensured; and the
fatigue resistance is good, the elongation ranges from 10% to 20%, the bearing capability is good and is 5 times that of a common iron wheel hub, high-speed running is quiet stable, the manufacturing method is simple, and raw materials are easy to obtain and capable of being widely produced and continuously replacing existing materials.