Preparation method of high-niobium porous layered titanium-aluminum alloy sheet material
A titanium-aluminum alloy and porous layer technology, which is used in high-temperature resistant materials and aerospace fields, can solve the problem that titanium-aluminum-based alloy materials have poor high temperature resistance, heat insulation and oxidation resistance, and cannot be promoted as high temperature resistant materials in the aerospace field. and other problems to achieve the effect of avoiding incomplete response, facilitating heat dissipation and ventilation, and improving strength
Active Publication Date: 2019-08-27
HARBIN UNIV OF SCI & TECH
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Problems solved by technology
[0004] The invention aims to solve the technical problem that the existing titanium-aluminum-based alloy materials have poor high temperature resistance, heat insulation and oxidation resistance, and cannot be popularized in the aerospace field, and provides a high-niobium porous layered Preparation method of titanium-aluminum alloy plate
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Embodiment 1
[0024] Embodiment 1: The preparation method of the high-niobium porous layered titanium-aluminum alloy plate in this embodiment is carried out according to the following steps:
[0025] Step 1. Mix 80g of aluminum powder with a particle size of 20μm and 20g of niobium powder with a particle size of 50μm, put it in a ball mill, put 200 zirconia balls (mass ratio of ball to material is 20:1), and use 300r / min Ball milling at a high speed for 10 hours, take out the powder and put it into a graphite mold sprayed with boron nitride, and then vacuum hot pressing sintering, vacuum hot pressing sintering is at a vacuum degree of 10 -2 Under the condition of MPa, heat up to 300°C at a heating rate of 10°C / min and pressurize to 25MPa. When the temperature rises to 640°C, keep the temperature and hold the pressure for 2 hours, and cool to room temperature with the furnace to obtain the aluminum-niobium alloy material;
[0026] Step 2: Carry out multi-pass high-temperature rolling to the ...
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Abstract
The invention provides a preparation method of a high-niobium porous layered titanium-aluminum alloy sheet material, and belongs to the technical field of high-temperature-resistant materials in the aerospace field. The invention aims to solve the technical problem that an existing titanium-aluminum-based alloy material is poor in high-temperature resistance, thermal insulation property and oxidation resistance and cannot be popularized in the technical field of high-temperature-resistant materials in the aerospace field. The method comprises the following steps that 1, aluminum powder and niobium powder are uniformly mixed by a ball milling method, and then vacuum hot-pressing sintering is performed to obtain an aluminum-niobium alloy material; 2, multi-pass high-temperature rolling is carried out on the aluminum-niobium alloy material until the aluminum-niobium alloy material is in a foil shape to obtain aluminum-niobium composite foil; 3, the surfaces of titanium foil and the aluminum-niobium composite foil are preprocessed; 4, the titanium foil and the aluminum-niobium composite foil treated in the step 3 are alternately stacked into a graphite die spraying boron nitride on theinner wall; and 5, pressurized heat treatment is carried out to obtain the high-niobium porous layered titanium-aluminum alloy sheet material. According to the method, the problems of incomplete reaction and difficulty in forming in a traditional smelting preparation process are effectively avoided.
Description
technical field [0001] The invention belongs to the technical field of high-temperature-resistant materials in the aerospace field, and specifically relates to a preparation method of a high-niobium porous layered titanium-aluminum alloy plate. Background technique [0002] With the development of aerospace technology and modern industrial technology, the industrial materials prepared by traditional technology are unable to cope with the rapid development of technology. Single metal materials and traditional composite materials have been difficult to meet the needs of science and technology. Therefore, research on new composite materials is the current topic, how to prepare new composite materials, how to optimize and select new composite materials has become a real-time hot spot. Among them, titanium-aluminum-based alloy materials have become one of the important choices for high-temperature-resistant materials in the aerospace field due to their good high-temperature resis...
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Login to view more IPC IPC(8): B21B1/40B22F3/14B32B37/10B32B37/06B02C17/10
CPCB02C17/10B21B1/40B22F3/14B32B37/06B32B37/10
Inventor 李学问刘刚索转霞房文斌
Owner HARBIN UNIV OF SCI & TECH
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