A 650°C resistant titanium-based composite material and its preparation method

CN117210717BActive Publication Date: 2025-08-29AVIC BEIJING AERONAUTICAL MFG TECH RES INST
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Patent Information

Application Number
CN202311188413.2
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-09-14
Publication Date
2025-08-29
Estimated Expiration
2043-09-14

AI Technical Summary

Technical Problem

The existing high-temperature titanium alloy materials cannot meet the service temperature requirements of above 650℃, resulting in insufficient material performance of the heat-resistant structural components of the new aircraft.

Method used

In the titanium alloy matrix, micro-scale ceramic compounds, nano-scale α2 and silicide phases are introduced, refractory metal elements are added, and sheet tissue is formed by regulating the matrix structure. Forging and rolling deformation above the β single-phase region is used to control the final deformation temperature is above β-50℃, and the deformation amounts are accurately controlled.

Benefits of technology

The good high-temperature strength and room temperature plasticity matching of the titanium-based composite material at 650°C was achieved, and a fine grain with near-grid basket tissue characteristics and a uniformly distributed TiB phase were prepared, and a thin plate of 0.9-2mm×800-2500mm was obtained.

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Abstract

The present invention relates to the technical field of nonferrous metal processing, and more specifically to a 650°C-resistant titanium-based composite material and its preparation method. The 650°C-resistant titanium-based composite material comprises the following components by mass percentage: 6.0% to 7.0% aluminum, 1.0% to 3.0% zirconium, 0.5% to 2.0% molybdenum, 0.1% to 2.0% vanadium, 0.1% to 0.4% silicon, 0.3% to 0.7% boron, and 0.01% to 0.15% carbon, with the remainder being titanium, refractory metals, and unavoidable impurity elements. The purpose of this 650°C-resistant titanium-based composite material and its preparation method is to address the problems of insufficient high-temperature performance of titanium-based composite materials and the difficulty in preparing thin sheets.
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Citation Information

Patent Citations

  • High-temperature and high-elasticity modulus titanium alloy

    CN103409659A

  • High-temperature and high-strength titanium alloy and processing method thereof

    CN112195364A

  • Titanium alloy casting material and manufacturing method thereof

    CN112251631A