Preparation method for Ti3Al-TiAl laminated composite material

A layered composite material, tial3-ti technology, applied in the direction of metal layered products, chemical instruments and methods, lamination, etc., can solve the problems of high cost, complicated process, high equipment requirements, etc., and achieve low cost and simple production process Ease of operation and low equipment requirements

Inactive Publication Date: 2012-10-24
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of high equipment requirements, complex process and high cost in the preparation method of existing layered composite materials, and provide Ti 3 Preparation method of Al-TiAl layered composite material

Method used

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  • Preparation method for Ti3Al-TiAl laminated composite material
  • Preparation method for Ti3Al-TiAl laminated composite material

Examples

Experimental program
Comparison scheme
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specific Embodiment approach 1

[0017] Specific embodiment one: this embodiment Ti 3 The preparation method of Al-TiAl layered composite material is realized by the following steps:

[0018] 1. Cut the surface-treated Ti foil and Al foil into small pieces, alternately stack 10-30 layers, the top and bottom of the stack are both coated with BN or Y 2 O 3 Then, wrap a layer of Ti foil coated with BN on the alternately stacked Ti foil and Al foil, then place it in a graphite mold, and then put the graphite mold into a vacuum hot pressing sintering furnace to heat to 300~ 500℃, apply 10~30MPa pressure at the same time, keep for 0.5~1h to obtain laminated foil;

[0019] 2. Unload the pressure on the laminated foil in the first step, heat the laminated foil to 600~800℃ at a heating rate of 10℃ / min, keep it for 2~40h, so that the Ti foil and Al foil will undergo diffusion reaction to produce TiAl 3 -Ti layered composite material, and then heated to 900~1300℃ at a heating rate of 10℃ / min, while applying a pressure of 10~3...

specific Embodiment approach 2

[0026] Specific embodiment two: This embodiment is different from specific embodiment one in that step one is placed in a vacuum hot-pressing sintering furnace and heated to 330-450°C while applying a pressure of 15-26 MPa. Other steps and parameters are the same as in the first embodiment.

specific Embodiment approach 3

[0027] Specific embodiment three: This embodiment is different from specific embodiment one in that step one is placed in a vacuum hot-pressing sintering furnace and heated to 380°C while applying a pressure of 23 MPa. Other steps and parameters are the same as in the first embodiment.

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Abstract

The invention discloses a preparation method for a Ti3Al-TiAl laminated composite material, relating to a preparation method for a metal laminated composite material and aiming at solving the problems of high requirement on equipment and complex process in a traditional preparation method. The preparation method for the laminated composite material comprises the following steps of: placing a Ti foil and an Al foil which are alternatively arranged in a stacking way into a vacuum hot press sintering furnace and heating to 300-500DEG C and simultaneously pressurizing; and secondly, unloading the pressure, heating the stacked foils to 600-800DEG C and maintaining the temperature, then heating the foils to 900-1300DEG C, simultaneously applying the pressure of 10-30MPa, maintaining the pressure and then cooling along with the furnace and withdrawing the die to obtain the Ti3Al-TiAl laminated composite material. According to the preparation method disclosed by the invention, the preparation of the laminated composite material can be finished at a time; a production process is simple and feasible; the requirement on the equipment is low; and the obtained laminated composite material is compact in interface bonding and is applied to aerospace turbine engine vanes, aerofoils and members of engines of high-grade cars.

Description

Technical field [0001] The invention relates to a method for preparing a metal layered composite material. Background technique [0002] TiAl intermetallic compounds mainly include Ti 3 Al, TiAl and TiAl 3 Three kinds of intermetallic compounds, among which TiAl 3 Because of its brittleness, it is still in the stage of theoretical research, while Ti 3 Al and TiAl have been widely used in the aerospace and automotive industries. Among them, Ti 3 Al has good ductility, high strength, TiAl has good oxidation resistance, high service temperature, Ti 3 Al-TiAl composites have the advantages of both and can play a better role in structural material applications. [0003] The layered material is a new type of structural material inspired by the shell structure in nature. The structural mechanism and toughening mechanism of shells are applied to the design of multilayer composite materials. The purpose is to compensate for the lack of inherent properties of single-layer materials through l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B15/01B32B37/06B32B37/10
Inventor 耿林逄锦程范国华李爱斌崔喜平张杰郑镇洙
Owner HARBIN INST OF TECH
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