Jiangsu University

Liwei Jin

Wei Qian

Xizhou Kai

Yutao Zhao

Xu Gao

Gang Chen

Chuang Guan

Luyao Huang

The present invention provides a method for preparing an in-situ ternary nanoparticle-reinforced aluminum matrix composite (AMC). In this method, an in-situ reaction generation technique is used, and with a powder containing formation elements for producing reinforcing particles as a reactant, in conjunction with a low-frequency rotating magnetic field/ultrasonic field regulation technique, an aluminum-based composite material is prepared using nanoparticle intermediate alloy re-melting. An AA6016-based composite material reinforced by ternary nanoparticles has an average particle size of 65 nm, and has an obvious refinement phenomenon compared with unitary and dual-phase nanoparticles.

Preparation method of in-situ ternary nanoparticle-reinforced aluminum matrix composite

A graphene and in-situ nano-ZrBparticle-co-reinforced aluminum matrix composite (AMC) and a preparation method thereof are provided. The preparation method includes: heating an aluminum alloy for melting, adding potassium fluoroborate and potassium fluorozirconate to produce ZrBparticles in-situ, additionally adding a mixture of pre-prepared copper-coated graphene and an aluminum powder, and stirring with an electromagnetic field for uniform dispersion; and ultrasonically treating the resulting melt to improve the dispersion of the in-situ nano-ZrBparticles and the graphene, casting for molding to obtain a casting, and subjecting the casting to homogenization and rolling for deformation to obtain the graphene and in-situ nano-ZrBparticle-co-reinforced AMC. The in-situ generation of the reinforcement nano-ZrBparticles in an aluminum alloy melt increases the number of interfaces in the composite and also increases the dislocation density.

Graphene- and in-situ nanoparticle-reinforced aluminum-based composite material and preparation method

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Zhenjiang, China

Liwei Jin