Ultrasonic-assisted selective laser melting device for TiC/TiAl/Nb micro-laminated composite material

Abstract

The invention provides an ultrasonic-assisted selective laser melting device for a TiC / TiAl / Nb micro-laminated composite material. The device comprises a forming chamber, a forming laser, a heat supplementing laser, a thermal imager, a powder chamber, a powder chamber moving mechanism, a height platform and an ultrasonic assisting system, wherein the forming laser, the heat supplementing laser andthe thermal imager are all arranged above the forming chamber, the lower end of the forming chamber is connected with the height platform, a base platform for placing a substrate is arranged in the middle of the height platform, the powder chamber moves above the base platform through the powder chamber moving mechanism, and the ultrasonic assisting system is arranged below the base platform. Through ultrasonic assisting, the defects of too large interlayer spacing, prone generation of spheroidization and pores and the like are reduced, and the TiC / TiAl / Nb micro-laminated composite material with good high-temperature strength and toughness is obtained; and a part made of the TiC / TiAl / Nb micro-laminated composite material is obtained by melting and stacking three powder materials of TiC, TiAl and Nb layer by layer through selective laser melting and adding, has the properties of high temperature performance, oxidation resistance, high strength ratio, high temperature strength and toughness, and meets the use requirements of the industry.

Description

technical field [0001] The invention relates to the technical field of material forming, in particular to an ultrasonic-assisted TiC / TiAl / Nb micro-laminated composite material selective laser melting device. Background technique [0002] Selective laser melting is a method of melting powder materials layer by layer by laser beams to form parts with complex shapes. TiAl has good high temperature performance, oxidation resistance, high strength ratio and other properties. However, in order to meet the needs of the aerospace industry, the high temperature strength and toughness of TiAl still need to be improved. Micro-laminated composites are materials with better performance obtained by overlapping layers of two or more materials with different properties. [0003] At present, there has been a conception of using selective laser melting additive technology to manufacture TiAl micro-laminated composite materials, but due to the inability to overcome defects such as excessive l...

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Problems solved by technology

[0003] At present, there has been a conception of using selective laser melting additive technology to manufacture TiAl micro-laminated composite materials, but due to the inability to overcome defects such as excessive layer spacing and easy spheroidization and pores, the conceived material with good properties cannot be produced , cannot meet the needs of use

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