Titanium alloy piece with anti-cavitation property on surface and preparation method thereof

Abstract

The invention discloses a titanium alloy piece with anti-cavitation property on surface and a preparation method thereof. The titanium alloy piece comprises a matrix and surface texture layers which are in texture structures processed by laser. The texture structure is grid or linear or spotted texture. The processing method comprises the following steps: preprocessing the matrix of the titanium alloy piece, and utilizing laser processor to carry out surface texture structure process on the surface of the titanium alloy piece so as to prepare surface texture layers of titanium alloy with gaps of 50 mu m and 100 mu m. In the invention, as the surface of titanium alloy is processed into a grid or linear or spotted texture structure with different gaps by laser, the anti-cavitation property of the titanium alloy is significantly improved. The laser beam used by the invention has good coherence and directivity, thereby ensuring no shape change of the working piece, and not causing the problems of loose organization structure and weak binding force of workpiece and the like.

Description

technical field [0001] The design of the invention relates to a surface processing technology of metal materials, in particular to a titanium alloy part with cavitation resistance on the surface and a processing method thereof. Background technique [0002] Titanium alloys are mainly used in the fields of aviation, aerospace, energy, shipbuilding and marine engineering, and medicine. Cavitation damage often occurs in the above applications, so it is necessary to improve the cavitation resistance of titanium alloys. Surface treatment can effectively improve the cavitation corrosion resistance of titanium alloys, but traditional surface modification treatments such as carburizing, boronizing and nitriding have disadvantages such as long treatment cycle and easy deformation of workpieces; coatings prepared by thermal spraying technology have The disadvantages are loose organization structure and weak binding force with the matrix. Contents of the invention [0003] In order ...

AI Technical Summary

Problems solved by technology

Surface treatment can effectively improve the cavitation corrosion resistance of titanium alloys, but traditional surface modification treatments such as carburizing, boronizing and nitriding have disadvantages such as long treatment cycle and easy deformation of workpieces; coatings prepared by thermal spraying technology have Insufficiencies such as loose tissue structure and weak binding force with the matrix

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