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A large size ni-ni 3 Preparation method of al-nial layered structure composite board

A layered structure, composite plate technology, applied in the direction of coating, manufacturing tools, metal rolling, etc., can solve the problems of difficult high temperature strength of large-sized NiAl alloy plates, and achieve the effect of not easy to control and operate

Active Publication Date: 2022-05-13
TAIYUAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The invention overcomes the deficiencies of the prior art and provides a Ni-Ni with high temperature, high strength and large size. 3 The preparation method of Al-NiAl layered structure composite plate solves the problems that the large-size NiAl alloy plate is difficult to be prepared by traditional methods and the high-temperature strength is low

Method used

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  • A large size ni-ni <sub>3</sub> Preparation method of al-nial layered structure composite board
  • A large size ni-ni <sub>3</sub> Preparation method of al-nial layered structure composite board
  • A large size ni-ni <sub>3</sub> Preparation method of al-nial layered structure composite board

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Embodiment 1

[0036] combine figure 1 , figure 2 , image 3 , Figure 4 Illustrates, a kind of Ni-Ni with high temperature high strength large size of this embodiment 3 The preparation method of Al-NiAl layered structure composite board comprises the following steps:

[0037]Step 1. Determine the thickness ratio, thickness and number of layers of the original plate: take the thickness of Ni plate and Al plate as 0.2mm and 0.14mm respectively, and the thickness ratio is 1.4:1; the maximum width is > 1m, and the number of layers of Ni plate and Al plate n According to the set thickness of the composite board T Sure. T = n· ( t Ni + t Al ),in, t Ni and t Al are the thicknesses of Ni and Al component plates after rolling thinning, respectively.

[0038] Step 2. Surface treatment of original boards: Scrub Ni boards and Al boards with organic solvents such as alcohol and acetone, then rinse A and B boards with 10%-20% HF aqueous solution to remove scale, and then rinse them with ...

Embodiment 2

[0045] The difference between this embodiment and embodiment 1 is:

[0046] In step 1, the thickness of Ni plate and Al plate is 0.2mm and 0.125mm respectively, and the thickness ratio is 1.6:1; the maximum width is >1m, and the number of layers of Ni plate and Al plate n According to the set thickness of the composite board T Sure. T = n· ( t Ni + t Al ),in, t Ni and t Al Respectively, the thicknesses of Ni and Al component plates after rolling and thinning.

[0047] All the other are identical with embodiment 1.

Embodiment 3

[0049] The difference between this embodiment and embodiment 1 is:

[0050] In step 2, the Ni plate and the Al plate are polished with fine sandpaper to remove scale, and scrubbed with alcohol or acetone solution to remove oil and stains, and then air-dried. Its purpose is to make the surface of the metal slab cleaner, which is beneficial to the subsequent diffusion reaction.

[0051] All the other are identical with embodiment 1.

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Abstract

The present invention is a large size Ni-Ni 3 The preparation method of Al-NiAl layered structure composite board relates to the technical field of composite board preparation; the specific steps are: determining the thickness ratio, thickness and number of layers of Ni board and Al board; original board surface treatment; hot pressing pre-compounding to obtain Ni / Al laminated hot-pressed pre-composite plate; rolling composite thinning to obtain Ni / Al micro-laminated composite plate; Ni / Al micro-laminated composite plate through primary reaction diffusion; in-situ secondary reaction synthesis; the present invention solves the problem of large Size NiAl alloy plate is difficult to prepare by traditional methods and the problem of low high temperature strength; the prepared Ni‑Ni 3 Al-NiAl layered structure composite board has a maximum width of >1m, a tensile strength of 140MPa at 1000°C, and a density of only 6.0-6.5g / cm 3 .

Description

technical field [0001] The invention relates to the technical field of composite plate preparation, in particular to a high-temperature, high-strength, large-size Ni-Ni 3 The invention discloses a preparation method of an Al-NiAl layered structure composite plate. Background technique [0002] The new generation of aerospace vehicles is rapidly developing in the direction of high Mach number, high payload, ultra-long endurance and ultra-long range, and the demand for lightweight, high-temperature resistant and thin-walled components is increasing. For example, hypersonic vehicles can achieve Ma 6 ~20 Mach flight speed, but the aerodynamic heat generated during flight will cause severe thermal shock to the engine inlet and other key components, and the temperature can reach more than 900 °C. The impact of the thermal barrier will greatly weaken the strength of the metal, deform the surface of the engine, and even cause the aircraft to disintegrate. Therefore, the demand for...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B1/38B21B47/02B21B45/04B21B3/00C22F1/10C22F1/04C23C10/28
CPCB21B1/38B21B47/02B21B45/04B21B3/00C22F1/10C22F1/04C23C10/28B21B2001/386B21B2003/001
Inventor 林鹏席先铮孟令健
Owner TAIYUAN UNIV OF TECH