Multi-reaction system laser additive manufacturing method for high-toughness titanium-based composite material

Abstract

The invention relates to a multi-reaction-system laser additive manufacturing method for a high-toughness titanium-based composite material, which comprises the following steps of: adopting a raw material formed by mixing reinforced particles and titanium alloy matrix powder, and utilizing the reaction system difference of the material under the action of selective laser melting and selective laser sintering; the raw materials respectively generate in-situ reaction enhancement and grain refinement toughening effects under selective laser melting and selective laser sintering; the mass percent of reinforced particles and titanium alloy matrix powder in raw material mixed powder needed for preparing the titanium-based composite material is adjustable between 1% and 10%, and the high-toughness composite material achieving three-dimensional interweaving of the high-strength hard titanium-based composite material and the high-toughness soft titanium-based composite material is prepared through selective laser melting-sintering. According to the method, selective laser melting and selective laser sintering effects and the difference of reaction systems of materials are utilized, preparation of the titanium-based composite material formed by interweaving the high-strength hard titanium-based composite material and the high-toughness titanium-based material is achieved, and the limitation that equipment transformation is complex and the process is difficult to control is avoided.

Description

technical field [0001] The invention relates to the technical field of preparation of high-strength and tough titanium-based composite materials, in particular to a multi-reaction system laser additive manufacturing method for high-strength and tough titanium-based composite materials. Background technique [0002] Titanium alloys are widely used in aerospace, vehicle transportation, national defense and military fields because of their low relative density, high strength, and good wear resistance. However, in some specific special service situations, such as aerospace engines, tank armor, etc., the performance requirements for metal materials are constantly increasing, especially the strength and toughness of the materials cannot fully meet the application requirements, so it will become a short board limiting its application. For these existing problems, according to the use environment and performance requirements of the material, the corresponding types of reinforcements...

AI Technical Summary

Problems solved by technology

It is used to develop new methods and new structural titanium matrix composites to improve their mechanical properties, aiming to solve the problem that the strength and toughness of titanium matrix composites cannot be improved at the same time

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