Jiangsu University

Sumec Wheels Co., Ltd.

Yutao Zhao

Xizhou Kai

Gang Chen

Wei Qian

Lin Wei Wu

Ruikun Chen

Yanjie Peng

Liwei Jin

Xu Gao

Tongxiang Fan

Ran Tao

Xiangfeng Liang

Xiaojing Xu

Rui Cao

Shuoming Huang

Chengchao Du

Yuanpu Peng

Zhuangzhuang Xu

Chang Miao

Chuang Guan

Luyao Huang

Wenling Wang

The present disclosure relates to an aluminum alloy material, and specifically to a weldable in-situ nano-strengthened rare-earth metal (REM)-containing aluminum alloy with high strength and toughness and a preparation method thereof. In the present disclosure, in-situ nano-ceramic particles and REMs simultaneously introduced into an Al—Zn—Mg alloy can effectively refine the grains and significantly improve the strength and toughness of the alloy; and REM-containing nano-precipitated phases and in-situ nanoparticles distributed in the grains or at grain boundaries can also significantly increase a recrystallization temperature of the alloy, effectively inhibit the dynamic recovery, reduce the re-dissolution of alloying elements, and improve the weldability of the alloy.

Weldable in-situ nano-strengthened rare-earth metal containing aluminum alloy with high strength and toughness and preparation method thereof

An aluminum alloy flux-cored welding wire and a fabrication method thereof are provided. In the present disclosure, a mixed salt is used as a filler for the flux-cored welding wire, and a reaction between the mixed salt and a welding base metal is directly induced through welding heat to produce in situ nanoparticles, which not only reduces a production cost of the welding wire, but also enhances the bonding between the added particles and the base metal through the prominent wettability between the in-situ enhancement particles and the base metal; and a rare earth element is added to significantly refine grains, which provides a new idea for the selection of a flux-cored welding wire for 7XXX aluminum alloy welding.

Aluminum alloy flux-cored welding wire and fabrication method thereof

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

The present invention relates to an aluminum matrix composite (AMC), and particularly to a method and apparatus for preparing an AMC with a high strength, a high toughness, and a high neutron absorption. The present invention combines a high-neutron-absorption and highly stable micro-BC extrinsic reinforcement with an in-situ nano-reinforcement containing elements B, Cd, and Hf and having high neutron capture ability, achieves efficient absorption of neutrons by using the large cross-sectional area of the micro-reinforcement, achieves effective capture of rays penetrating gaps of the micro-reinforcement by means of the highly dispersed in-situ nano-reinforcement, and significantly improves the toughness of the composite material by means of the high-dispersion toughening effect of the nano-reinforcement, obtaining a particle-reinforced aluminum matrix composite (PAMC) having high toughness and high neutron absorption.

Method and apparatus for preparing aluminum matrix composite with high strength, high toughness, and high neutron absorption

Provided are an anti-fatigue in-situ aluminum-based nanocomposite material for heavy-load automobile hubs and a preparation method therefor. By means of the fine adjustment of components and a forming process, in situ nano-compositing, micro-alloying and rapid compression moulding techniques are combined. That is, after the addition of Zr and B, an in-situ reaction occurs to form a nano ZrBceramic reinforcement, which is distributed in aluminum crystals and crystal boundaries and bonded to a metallurgical interface kept firm with the matrix.

Anti-fatigue in-situ aluminum-based composite material for heavy-load hubs and preparation method therefor

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Jiangsu, China

Yutao Zhao