A kind of in-situ self-generated tib reinforced β titanium alloy composite material and preparation method thereof

A technology of titanium-based composite material and beta titanium alloy is applied in the field of in-situ TiB reinforced beta titanium alloy composite material and its preparation, which can solve the problems of increasing the difficulty of plastic deformation, restricting the development and application of alloys, and uneven deformation. Achieve the effect of reducing the risk of crack initiation, effective refinement and uniform distribution, and good matching of high stiffness
CN113046591BActive Publication Date: 2022-04-29AVIC BEIJING AERONAUTICAL MFG TECH RES INST
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
AVIC BEIJING AERONAUTICAL MFG TECH RES INST
Publication Date
2022-04-29

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Abstract

The invention relates to an in-situ self-generated TiB reinforced β-titanium alloy composite material, including TiB and β-titanium alloy, wherein the volume ratio of TiB is 1-2.5%, and the β-titanium alloy is Ti-5Al-5Mo-5V-3Cr- 1Zr. The present invention also relates to a method for preparing an in-situ self-generated TiB reinforced β-titanium alloy composite material, comprising: preparing an in-situ self-generated TiB-reinforced β-titanium alloy Ti-55531 composite ingot by using a vacuum consumable arc melting method; Multi-pass piercing and near-isothermal thermoplastic deformation blanking; multi-pass pier drawing and near-isothermal thermoplastic deformation forging for the billet forging blank; multi-pass hot rolling for the modified forging blank to obtain titanium-based composite material blank; The titanium-based composite billet is subjected to solution heat treatment, and the solid solution forging billet is subjected to aging heat treatment to obtain TiB reinforced β titanium alloy composite material. The purpose of the in-situ self-generated TiB reinforced β titanium alloy composite material and its preparation method is to solve the problem of how to realize the good matching of ultra-high strength, high stiffness and plasticity of the β titanium alloy.
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Description

technical field

[0001] The invention relates to the technical field of metal matrix composite materials, in particular to an in-situ self-generated TiB reinforced β-titanium alloy composite material and a preparation method thereof. Background technique

[0002] Due to a series of advantages such as low density, high specific strength, high specific stiffness, excellent corrosion resistance, and high temperature creep resistance, titanium alloys have been widely used in aviation, aerospace and other fields, and have become the main structure of advanced aircraft and engines. one of the materials. Because of its excellent heat treatment strengthening effect, large hardening depth, good cold and hot workability and excellent fracture toughness, β titanium alloy is an important load-bearing structural part of aircraft outer plates, frames, connectors and fasteners. ideal material. In recent years, under the guidance of design concepts such as lightweight, long life, and high ...

Claims

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