Graphene and rare earth scandium synergistically-reinforced cast aluminum alloy and application of graphene and rare earth scandium synergistically-reinforced cast aluminum alloy to aspect of automobile hub

Abstract

The invention relates to a graphene and rare earth scandium synergistically-reinforced cast aluminum alloy and application of the graphene and rare earth scandium synergistically-reinforced cast aluminum alloy to the aspect of an automobile hub. The graphene and rare earth scandium synergistically-reinforced cast aluminum alloy is prepared from the raw material components in percentage by mass: 6.0-8.0% of Si, 0.20-0.45% of Mg, 0.50-0.60% of Sc, 0.003-0.007% of graphene, less than or equal to 0.05% of Li, less than or equal to 0.05% of Be, less than or equal to 0.05% of B, less than or equal to 0.05% of Na, less than or equal to 0.05% of P, less than or equal to 0.10% of Ti, less than or equal to 0.10% of V, less than or equal to 0.05% of Cr, less than or equal to 0.10% of Mn, less than orequal to 0.10% of Fe, less than or equal to 0.05% of Ni, less than or equal to 0.10% of Cu, less than or equal to 0.10% of Zn, less than or equal to 0.05% of Zr, less than or equal to 0.05% of Sn, less than or equal to 0.10% of Pb and the balance of Al. The graphene and rare earth scandium synergistically-reinforced cast aluminum alloy has excellent comprehensive mechanical performance and electrical conductivity performance and is especially suitable for the aspect of the automobile hub.

Description

technical field [0001] The invention belongs to the technical field of cast aluminum alloys, in particular to a graphene rare earth scandium synergistically reinforced cast aluminum alloy and its application in automobile wheel hubs. Background technique [0002] At present, with the general concern about energy consumption in all countries in the world, in addition to meeting the normal use of automobile wheels, it is also necessary to consider how to reduce the weight and prolong the life of the wheels. These have become urgent problems in the development of automobiles. Aluminum alloy automobile wheels Small density, light weight, good casting fluidity, fast heat dissipation, good shock absorption performance, good corrosion resistance, long service life, beautiful appearance, obvious energy saving and emission reduction effects, and a very significant effect on speeding up the car. One of the most effective materials for realizing the weight reduction of automobiles. ...

AI Technical Summary

Problems solved by technology

The cost of powder metallurgy is high, the cycle is long, the density of the prepared parts is not high, and there are internal defects, which leads to the phenomenon of poor material performance, and often requires secondary processing

The casting method is relatively simple, low in cost, and can be mass-produced, but segregation is prone to occur during the casting process, and gas is easily brought into the non-vacuum oscillating stirring casting process to form pores, and the harmful interface reaction between graphene and aluminum needs to be controlled

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