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Ti-Al intermetallic compound laminated composite material tube and preparation method thereof

A technology of intermetallic compounds and layered composite materials, applied in the field of Ti-Al intermetallic compound layered composite material tubes and its preparation, can solve the problems of difficult processing into tube shapes and difficult forming of Ti-Al layered composite materials , to achieve the effect of short manufacturing cycle, high forming precision and low cost

Active Publication Date: 2014-03-19
AVIC BEIJING AERONAUTICAL MFG TECH RES INST
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Problems solved by technology

[0004] The invention provides a Ti-Al intermetallic compound layered composite material pipe and its preparation method to solve the problem that the Ti-Al layered composite material is difficult to form and difficult to process into a tube shape

Method used

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  • Ti-Al intermetallic compound laminated composite material tube and preparation method thereof

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preparation example Construction

[0028] The present invention proposes a preparation method of a Ti-Al intermetallic compound layered composite material tube, such as figure 1 As shown, the preparation method of the Ti-Al intermetallic compound layered composite tube comprises:

[0029] Step A: Use titanium or titanium alloy pipes as the inner tube blank 1 and the outer tube blank 2, fill the middle of the inner tube blank 1 and the outer tube blank 2 with a metal interlayer 3, and the material of the intermediate layer is aluminum foil or aluminum powder, and the inner tube blank 1 and the two ends of the outer tube blank 2 are welded, so that the annular cavity between the inner tube blank and the outer tube blank is airtight, forming a sealed pocket, so that the inner tube blank 1 is hollow; the step A is, for example Occurs under normal temperature and pressure, which simplifies the processing conditions;

[0030] Step B: Then vacuumize the annular cavity between the inner tube blank and the outer tube b...

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Abstract

The invention provides a Ti-Al intermetallic compound laminated composite material tube and a preparation method thereof. The preparation method comprises the steps of with titanium alloy tubular products as an inner tube blank and an outer tube blank, filling a middle interlayer between the inner tube blank and the outer tube blank, welding two end parts of the inner tube blank and the outer tube blank together to seal an annular cavity between the inner tube blank and the outer tube blank, vacuumizing the annular cavity between the inner tube blank and the outer tube blank, placing the inner tube blank, the outer tube blank and the middle interlayer into a mold, fully filling granular mediums into the inner tube blank, and heating the inner tube blank, the outer tube blank, the middle metal interlayer, the mold and the granular mediums to reach a setting temperature to ensure that the middle metal interlayer is at a solid state; and moving a pressing head downwards to extrude the granular mediums to enable the outer tube blank to be attached to the inner wall of the mold, and maintaining the pressure for a certain time period S to enable the contact interfaces between the inner tube blank and the middle metal interlayer and between the outer tube blank and the middle metal interlayer to be subjected to Ti and Al diffusion and reaction, thus generating a Ti-Al intermetallic compound.

Description

technical field [0001] The invention relates to the field of manufacturing metal-based composite material pipe components, specifically a Ti-Al intermetallic compound layered composite material pipe and its in-situ forming and preparation integrated manufacturing method, or a Ti-Al intermetallic compound layered composite pipe. Composite tube and method of making same. Background technique [0002] Ti-Al intermetallic compounds have become the focus of research and development in recent years because of their low density, high specific strength, high-temperature mechanical properties and excellent oxidation resistance. Ti-Al layered composites are considered to be a very It is a promising high-temperature structural material for aerospace, but at present, Ti-Al layered composite materials are only limited to the experimental stage, and Ti-Al layered composite materials other than tubes or plates have not been made. [0003] With the urgent needs of practical applications su...

Claims

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Application Information

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IPC IPC(8): B21C37/06
Inventor 张荣霞吴为
Owner AVIC BEIJING AERONAUTICAL MFG TECH RES INST
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