Ti-Al-based alloy with good additive manufacturing forming property and application thereof

Abstract

The invention discloses Ti-Al-based alloy with the good additive manufacturing forming property and application of the Ti-Al-based alloy, and belongs to the technical field of metal additive manufacturing. The ingredients of the Ti-Al-based alloy are originated from a two-cluster alloy ingredient design model, the alloy element atomic percent (at.%) expression is shown in the description, whereinthe single or mixture total content of Ti, V, Nb, Ta, Zr, Hf and Mo elements is 2.9+ / -0.5 at.%, the single or mixture total content of Al and Sn elements is 11.8+ / -1.0 at.%, the total content of otherelements is controlled within 1 at.%, the main alloying element of the alloy is the Al element, the oxidation resistance and melt stability of alloy melt and flowability can be improved, and the alloy has good melt and solid structure consistency, and can be used for additive manufacturing forming.

Description

technical field [0001] The invention relates to a Ti-Al-based alloy with good formability of additive manufacturing and its application, which is expected to be used in the technical field of metal additive manufacturing. Background technique [0002] Titanium alloys have been widely used in various industries due to their high specific strength, good corrosion resistance, excellent high-temperature mechanical properties and good biocompatibility. However, the high processing cost limits its application range. However, the emergence of additive manufacturing technology breaks through the limitations of traditional technology. Additive manufacturing is an emerging manufacturing process based on digital models and using high-energy beam particle flow as a heat source to accumulate materials point by point or layer by layer to form three-dimensional solid parts. Compared with traditional technologies, additive manufacturing technology saves at least 30% to 50% of man-hours and...

AI Technical Summary

Problems solved by technology

At present, most of the alloys used in additive manufacturing are traditional casting alloys or forging alloys, but the composition design of these alloys is based on the process characteristics, microstructure, alloying characteristics and strengthening and toughening mechanism of the alloy in the casting or forging process. The manufacturing process characteristics determine that its microstructure and alloying characteristics must be quite different from traditional castings or forgings, so that the design of these alloys usually cannot give full play to the mechanical properties of additive manufacturing components, and it is necessary to redefine the special alloys for additive manufacturing. Design, and the main feature of additive manufacturing is that the alloy undergoes the whole process from melting to solidification in a short time, so the core material selection is based on high melt stability and compatibility between the melt and the solid structure, while the structure From the source point of view, the various properties of the material are related to the chemical process

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