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Roll forming technique of board made of NiAl-based composite material

An aluminum-based composite material and composite material technology, applied in the field of processing and preparation of NiAl-based composite materials, can solve the problems of internal oxidation, large rolling deformation, etc., and achieve the effect of uniform and dense structure and wide application

Inactive Publication Date: 2010-06-30
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0009] The purpose of the present invention is to solve the problem of two-phase deformation coordination in the process of rolling deformation of multi-layer plates by utilizing the characteristics of plastic deformation resistance of ceramic particle-reinforced aluminum-based composite materials and pure nickel plates, thereby achieving greater rolling deformation Therefore, thicker plates can be used as raw materials to solve the problems of internal oxidation and compactness of composite plates; at the same time, using the good plastic forming ability of aluminum matrix composite materials and pure nickel, the required plates can be obtained through rolling deformation , and then use the chemical reaction between aluminum and nickel to synthesize NiAl alloy in situ through post-rolling heat treatment to obtain NiAl-based composite material sheet, which solves the problem of preparing NiAl-based composite material sheet

Method used

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  • Roll forming technique of board made of NiAl-based composite material
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Experimental program
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Effect test

Embodiment 1

[0027] Preparation of Aluminum Matrix Composite Materials Reinforced by Ceramic Particles 2 Particles, the particle size is 6μm; the aluminum matrix is ​​pure Al powder, the purity is greater than 99%, and the particle size is 29μm; the nickel is pure nickel plate, the thickness is 1mm, and the purity is greater than 99%.

[0028] 1. Preparation of aluminum matrix composites reinforced with ceramic particles

[0029] (1) Ball milling powder mixing: pure aluminum with 95 parts by volume and TiB with 5 parts by volume 2 The granules are put into the powder mixer, and the powder is mixed evenly by ball milling to obtain a uniformly mixed raw material powder.

[0030] (2) Hot pressing sintering: put the uniformly mixed raw material powder into a graphite mold, cold press it, then put it into a vacuum hot pressing furnace, evacuate to a vacuum of 0.01Pa, and then heat it to 600°C and a pressure of 25MPa , holding time 120min. Then the furnace is cooled to room temperature, and t...

Embodiment 2

[0035] Preparation of Ceramic Particles Reinforced Aluminum Matrix Composite Materials Specific Implementation Case The selected ceramic particles are titanium carbide particles with a particle size of 3 μm, the aluminum matrix is ​​pure aluminum powder with a purity greater than 99%, and a particle size of 24 μm. The nickel is a pure nickel plate with a thickness of 2 mm , the purity is greater than 99%.

[0036] 1. Preparation of ceramic particle reinforced aluminum matrix composites

[0037] (1) Ball milling and mixing: put titanium carbide with 20 parts by volume and aluminum particles with 80 parts by volume into a powder mixer, and mix them uniformly by ball milling to obtain uniformly mixed raw material powder.

[0038] (2) Vacuum hot-pressing sintering: put the uniformly mixed raw material powder into a graphite mold, cold-press molding and then put it into a vacuum hot-pressing furnace for hot-pressing sintering, specifically, first vacuumize to a vacuum degree of 0.0...

Embodiment 3

[0043] Preparation of Aluminum Matrix Composite Materials Reinforced by Ceramic Particles 2 Particles, the particle size is 9 μm, the aluminum matrix is ​​pure aluminum powder, the purity is greater than 99%, the particle size is 34 μm, the nickel is pure nickel plate, the thickness of the nickel plate is 1mm, and the purity is greater than 99%.

[0044] 1. Preparation of aluminum matrix composites reinforced with ceramic particles

[0045] (1) Ball milling powder mixing: pure aluminum powder with 90 parts by volume and TiB with 10 parts by volume 2 The granules are put into the powder mixer, and the powder is mixed evenly by ball milling to obtain a uniformly mixed raw material powder.

[0046] (2) Hot pressing sintering: put the uniformly mixed raw material powder into a graphite mold, cold press and shape it, then put it into a vacuum hot pressing furnace, evacuate to a vacuum of 0.02Pa, and then heat it to 620°C and a pressure of 30MPa , holding time 90min. Then cool do...

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Abstract

The invention relates to a preparation process of a novel composite material, in particular to a roll forming technique of a board made of an NiAl-based composite material, which comprises the following steps of: (1) preparing a board made of an aluminium base composite material reinforced by ceramic particles; (2) preparing a nickel-aluminum composite board; and (3) carrying out heat treatment on the nickel-aluminum composite board. The invention solves the preparation problem of the board of the NiAl-based composite material and is mainly applied to the roll forming of the board made of the NiAl-based composite material.

Description

technical field [0001] The invention relates to a new composite material preparation process, in particular, it is mainly used in the processing and preparation of NiAl-based composite materials. Background technique [0002] The long-range ordered intermetallic compound NiAl is a β-phase electronic compound with a melting point of 1638°C, a density of 8.902g / cm3, a Young's modulus of 294Gpa, and a thermal conductivity of 70-80W / m K at 20-1100°C. 4 to 8 times that of nickel-based superalloys. NiAl alloy has the advantages of good high temperature oxidation resistance and corrosion resistance. As a high-temperature structural material, NiAl alloy is expected to replace the existing nickel-based and iron-based superalloys and be used in higher temperatures and harsher environments. [0003] Castings and forgings of NiAl-based alloys are mainly used in aerospace engine blades and other components; while TiAl-based alloy sheets are expected to be directly used as structural ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22F1/04B21B1/38
Inventor 张杰王庆伟范国华耿林张煜梓王桂松郑镇洙
Owner HARBIN INST OF TECH
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