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A kind of preparation method of micro-laminated titanium-aluminum-niobium composite plate

A technology of composite sheet and titanium-aluminum-niobium, which is applied in the field of preparation of micro-laminated titanium-aluminum-niobium composite sheet, can solve the problems of difficult processing and manufacturing of complex structural parts, poor formability of TiAl-based alloy materials at room temperature, and affecting practicability, etc. Improved formability, broad application prospects and possibilities, effect of promoting the formation of transitional structures

Active Publication Date: 2022-05-27
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The formability of TiAl-based alloy materials at room temperature is poor, and it is difficult to process and manufacture complex structural parts, which affects its practicability

Method used

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Experimental program
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Embodiment Construction

[0032] Below in conjunction with embodiment, the technical scheme of the present invention will be described in further detail:

[0033] The preparation method of the micro-laminated titanium-aluminum-niobium composite plate is characterized in that: the steps of the method are:

[0034] Step 1: Preparation of titanium aluminum alloy block

[0035] According to the weight of the titanium-aluminum alloy block, weigh pure Ti powder and pure Al powder with the same powder particle size, wherein the mass ratio of pure Ti powder and pure Al powder is consistent with the atomic ratio, and the weighed pure Ti powder and pure Al powder Put it in a mortar, mix it in a vacuum environment, pour it into a square graphite mold after mixing, put the graphite mold into a vacuum sintering furnace, sinter it at a temperature of 1000 ℃ for 1.5 hours, and then cool it to 300 ℃ with the furnace Take out the following to obtain a titanium-aluminum alloy block;

[0036] Step 2: Preparation of Nio...

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Abstract

The invention is a preparation method of a micro-laminated titanium-aluminum-niobium composite plate, the method is characterized by powder metallurgy + rolling + hot pressing sintering, and the method realizes Ti-Al and Ti-Al through long-term high-temperature and high-pressure action Static diffusion between ‑Nb single-layer substrates promotes the formation of transitional structures; through rolling deformation, dynamic deformation of Ti‑Al, Ti‑Al‑Nb and transitional structures can be realized to promote the formation of recrystallized structures and grain refinement; The combination of static diffusion and dynamic deformation improves the integrity and consistency of the TiAlNb composite sheet.

Description

technical field [0001] The invention relates to a preparation method of a micro-laminated titanium-aluminum-niobium composite plate, belonging to the technical field of thermal processing. Background technique [0002] In the process of development and research of intermetallic compounds, TiAl-based intermetallic compounds with excellent high temperature specific performance have attracted much attention. As a Ti-Al intermetallic compound, Ti2AlNb-based alloy has gradually become a research hotspot in the field of structural materials. And its high high temperature specific strength and creep resistance, low density and thermal expansion coefficient, and good plastic toughness also make it an ideal material in the aerospace industry, with very good application prospects. [0003] The poor formability of TiAl-based alloy materials at room temperature makes it difficult to process and manufacture complex structural parts, which affects its practicability. SUMMARY OF THE INV...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F7/02B22F3/14B22F3/18
CPCB22F7/02B22F3/14B22F3/18B22F2003/185
Inventor 方爽张敏聪王剑于秋颖李凯兰博熊华平
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS