Aluminum-based metal glass cladding layer and preparation method thereof

Abstract

The invention discloses an aluminum-based metal glass cladding layer and a preparation method thereof. The aluminum-based metal glass cladding layer is prepared from aluminum-based amorphous alloy powder serving as a raw material through a magnetic field stirring laser cladding forming technique. The element composition of the aluminum-based amorphous alloy powder is as follows: 5 wt%-8 wt% of Ni, 3 wt%-6 wt% of Y, 1 wt%-5 wt% of Co, 0.5 wt%-3 wt% of La and the balance Al; the particle size range of the aluminum-based amorphous alloy powder ranges from 25 micrometers to 71 micrometers; and the oxygen content of the aluminum-based amorphous alloy powder is below 1,000 ppm. The adopted aluminum-based amorphous alloy powder is high in degree of sphericility, good in fluidity and proper in particle size, and the added alloy components have the characteristics of being high in amorphous forming ability and stable in structure; and the amorphous phase content of the aluminum-based metal glass cladding layer prepared in the manner that the alloy powder is combined with the magnetic field stirring laser cladding forming technique reaches up to 30% or above, and meanwhile the aluminum-based metal glass cladding layer further has excellent mechanical performance and abrasion-resistant and corrosion-resistant performance.

Description

technical field [0001] The invention belongs to the technical field of cladding and forming, and in particular relates to an aluminum-based metallic glass cladding layer and a preparation method thereof. Background technique [0002] Compared with traditional crystalline materials, metallic glasses have many excellent properties, such as high strength, high hardness, large elastic strain limit, high corrosion resistance, and excellent magnetic properties. Moreover, due to its unique organizational structure, efficient preparation process, good material properties and broad application prospects, it is currently attracting attention in materials science and industry. However, due to the high critical cooling rate of ordinary amorphous materials (about 10 6 K / s), so most of them can only prepare strips or powder samples with a thickness on the order of microns, which greatly limits its application range. [0003] Compared with alloys with strong glass-forming ability such as...

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Problems solved by technology

However, due to the high critical cooling rate of ordinary amorphous materials (about 10 6 K / s), so most of them can only prepare strips or powder samples with a thickness on the order of microns, which greatly limits its application range

[0003] Compared with alloys with strong glass-forming ability such as iron-based and nickel-based, aluminum-based metallic glasses have limited amorphous-forming ability and belong to the marginal metallic glass system, so it is difficult to prepare high-performance amorphous aluminum alloy materials

There are few studies at home and abroad on this

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