Laser irradiation greatly improves the surface hardness of zirconium-based amorphous alloys

A technology of zirconium-based amorphous alloy and laser irradiation, which is applied in the direction of metal material coating process, coating, solid-state diffusion coating, etc., to achieve the effect of strong practicability, easy implementation, and less number of tests

Active Publication Date: 2022-05-06
JILIN UNIV
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Problems solved by technology

However, up to now, this method has only increased the surface hardness of amorphous alloys by 15.7% due to no parameter optimization

Method used

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  • Laser irradiation greatly improves the surface hardness of zirconium-based amorphous alloys
  • Laser irradiation greatly improves the surface hardness of zirconium-based amorphous alloys
  • Laser irradiation greatly improves the surface hardness of zirconium-based amorphous alloys

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Embodiment 1

[0032] This example is used to illustrate the method of greatly improving the surface hardness of zirconium-based amorphous alloy by laser irradiation of the present invention.

[0033] Choose a Zr41.2Ti13.8Cu12.5Ni10Be22.5 amorphous alloy block with a thickness of 2 mm, and polish the surface, use 400, 800, 1200 and 2000 sandpaper to polish, and then polish with 0.5 micron diamond particle polishing paste To mirror smooth, clean the surface with alcohol. Place the block sample in a cuboid cavity that can be fed with nitrogen, with the mirror facing upwards, using a nanosecond laser with a wavelength of 1064nm, a focused spot diameter of 43μm, and a pulse width of 10ns. Perform nanosecond laser treatment.

[0034] figure 2 After laser irradiation under the test conditions of average laser power of 12.1W, scanning speed of 10mm / s, overlapping rate of adjacent scanning lines of 10%, and laser irradiation times of 3, the surface after irradiation is obtained Compared with the...

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Abstract

The invention provides a method for greatly improving the surface hardness of zirconium-based amorphous alloys by laser irradiation, and belongs to the technical field of surface modification of amorphous alloys. The method includes nanosecond laser irradiation on the surface of the zirconium-based amorphous alloy in a nitrogen environment, introducing a zirconium nitride phase, optimizing the laser parameters to regulate the content of the zirconium nitride phase by using an orthogonal experiment design, and then controlling the surface hardness of the amorphous alloy , the surface hardness of the amorphous alloy after irradiation has been greatly improved under the optimal experimental parameters. The method of the present invention is designed with less times of orthogonal test design, uniform data distribution, and minimized test errors; high efficiency, simple method, easy implementation, strong practicability, and economy; hardness can be adjusted, and can be adjusted by adjusting laser irradiation parameters Change the surface hardness of zirconium-based amorphous alloy and enhance its practical application.

Description

technical field [0001] The invention relates to the technical field of surface modification of amorphous alloys, in particular to a method for greatly improving the surface hardness of zirconium-based amorphous alloys by laser irradiation. The orthogonal test design of the invention has many advantages such as high efficiency, uniform data distribution, simple method, easy implementation and strong practicability. Background technique [0002] The large cooling rate of metal elements in the liquid phase makes amorphous alloys have no crystal atomic structure, no grain boundaries and dislocation defects, so amorphous alloys have excellent properties, such as high strength, high elasticity, and strong corrosion resistance. These characteristics make amorphous alloys have potential applications in aerospace, precision machinery, military weapons and other fields. However, amorphous alloys are prone to highly localized shear band deformation under tensile loading, which limits ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C8/24
CPCC23C8/24
Inventor 黄虎洪婧钱永峰王超崔明明刘翰林
Owner JILIN UNIV
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