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Al base composite material and method for rapidly preparing TiAl base composite material plate by utilizing same

A composite material and sheet technology, applied in chemical instruments and methods, lamination, layered products, etc., can solve the problems of slow reaction rate and long production cycle, achieve low cost, improved high temperature mechanical properties, and pollution-free preparation process Effect

Inactive Publication Date: 2015-06-03
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problem that the reaction rate in the preparation of TiAl-based alloys is too slow and the production cycle is too long, and provides an Al-based composite material and a method for rapidly preparing a TiAl-based composite material plate using the Al-based composite material

Method used

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  • Al base composite material and method for rapidly preparing TiAl base composite material plate by utilizing same
  • Al base composite material and method for rapidly preparing TiAl base composite material plate by utilizing same
  • Al base composite material and method for rapidly preparing TiAl base composite material plate by utilizing same

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specific Embodiment approach 1

[0023] Specific Embodiment 1: In this embodiment, an Al-based composite material is made of 88%-99.9% Al and 0.1%-12% reinforcement according to the volume fraction; or an Al-based composite material is made of 85% Al-based composite material according to the mass fraction ~99.9% Al and 0.1%~15% alloying elements; the reinforcement is SiC, B 4 C. TiB 2 , TiC and Ti 5 Si 3 One or a combination of several, the alloy element is one or a combination of Ti, Si, B and Fe.

[0024] In this embodiment, by introducing alloying elements or reinforcements into Al element plates, and preparing TiAl-based composite material plates by hot pressing and reaction annealing, it can effectively improve the current production cycle of TiAl-based alloys that is too slow due to the slow reaction rate. The problem makes it possible to mass-produce TiAl-based composite sheets.

specific Embodiment approach 2

[0025] Embodiment 2: This embodiment is different from Embodiment 1 in that: the particle size of Al is 10 μm-200 μm, and the particle size of the reinforcement is 40 nm-10 μm. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0026] Embodiment 3: A method for rapidly preparing a TiAl-based composite material plate using an Al-based composite material described in Embodiment 1, specifically prepared according to the following steps:

[0027] 1. According to the thickness ratio of the pure Ti plate and the Al-based composite material described in claim 1 being 1.01 to 1.09:1, the pure Ti plate and the Al-based composite material are polished into pure Ti foil and Al-based composite material foil, The thickness of the pure Ti foil is 50 μm to 250 μm;

[0028] 2. Clean the pure Ti foil obtained in step 1 with an HF solution with a volume concentration of 5% to 20%, and clean the Al-based composite material foil obtained in step 1 with a NaOH solution with a mass concentration of 5% to 20%. Foil and Al-based composite foil were ultrasonically cleaned in acetone and dried;

[0029] 3. Place the pure Ti foil and Al-based composite material foil alternately stacked after step 2, and then perform hot press...

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Abstract

The invention relates to an Al base composite material and a method for rapidly preparing a TiAl base composite material plate by utilizing the same. The invention relates to a composite material and a method for preparing a plate by utilizing the same, which aim at solving the problem that the production cycle is too long due to the low reaction rate in the preparation of TiAl base alloy in the prior art. The Al base composite material is prepared from Al and a reinforcing body, or prepared from Al and an alloying element. The method comprises the steps of: 1. polishing; 2. cleaning; 3. hot pressing; and 4. annealing and densification treatment. According to the Al base composite material and the method, the reaction rate is high, the production cycle is short, the production process is easy and feasible, the cost is low, and the textile is small and controllable. The Al base composite material and the method are used for preparing the TiAl base composite material plate.

Description

technical field [0001] The invention relates to a composite material and a method for preparing boards using the composite material. Background technique [0002] TiAl-based alloy is a new type of lightweight heat-resistant structural material, with a specific gravity less than 50% of that of nickel-based alloys. It has the advantages of light weight, high strength, corrosion resistance, wear resistance, and high temperature resistance, and has excellent room temperature and high temperature performance. It has become a key material in the research and application of aviation, aerospace and military fields around the world. After decades of hard work, TiAl-based alloys have entered the stage of practical development. Among them, the demand for TiAl-based alloy sheets and foils is the most urgent. The use of Ti and Al elements for plate reaction annealing to prepare TiAl plates can avoid direct deformation of the brittle phase of TiAl, which shows great advantages, but the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/00C22C32/00C22C1/05C22C14/00B32B15/01B32B37/10B32B37/06
Inventor 耿林吴昊范国华崔喜平黄猛郑镇洙逄锦程杜岩
Owner HARBIN INST OF TECH
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