阅读说明：本技术 一种强织构的金属复合基带的制备方法 (Preparation method of metal composite baseband with strong texture ) 是由 刘志勇 刘宇瑄 刘天啸 宋桂林 杨海刚 于 2020-07-05 设计创作，主要内容包括：本发明公开了一种强织构的金属复合基带的制备方法,采用熔炼法获得合金铸锭,其成分为：9.5at.%~12at.%W,余量为Ni,采用热轧获得镍钨合金热轧板材,对热轧板材进行大变形量冷轧至80~100μm厚获得冷轧带材,将冷轧带材表面清洗干净,然后在冷轧带材表面沉积铜薄膜获得复合带材,最后对复合带材进行退火处理获得高性能的金属复合基带。本发明有效避免了对高强度镍钨合金进行织构优化,而是在高强度、无铁磁性的镍钨合金带材表面沉积一层铜薄膜,通过沉积工艺调整可以在薄膜中形成强的织构,该方法保留了镍钨合金的高力学性能和无铁磁性,从而最终获得高性能金属复合基带。(The invention discloses a preparation method of a metal composite baseband with strong texture, which adopts a smelting method to obtain an alloy ingot, and comprises the following components: 9.5at.% to 12at.% W, and the balance being Ni, obtaining a nickel-tungsten alloy hot rolled plate by hot rolling, carrying out large-deformation cold rolling on the hot rolled plate to a thickness of 80 to 100 μm to obtain a cold rolled strip, cleaning the surface of the cold rolled strip, depositing a copper film on the surface of the cold rolled strip to obtain a composite strip, and finally annealing the composite strip to obtain the high-performance metal composite baseband. The method effectively avoids texture optimization of the high-strength nickel-tungsten alloy, but deposits a layer of copper film on the surface of the high-strength non-ferromagnetic nickel-tungsten alloy strip, and can form a strong texture in the film through deposition process adjustment.)

1. A preparation method of a metal composite baseband with strong texture is characterized by comprising the following specific steps:

step S1: preparation of initial ingot

The alloy ingot is obtained by vacuum induction melting, and comprises the following components: 9.5at.% to 12at.% W, and the balance being Ni, and then obtaining a nickel-tungsten alloy hot rolled plate by hot rolling, wherein the thickness is 7 to 9mm, and the hot rolling temperature is controlled to be 1000 to 1200 ℃;

step S2: cold rolling of hot rolled sheet

Carrying out large-deformation cold rolling on the hot rolled plate obtained in the step S1 to a thickness of 80-100 mu m, wherein no annealing treatment is carried out in the middle of the cold rolling, the deformation of the last cold rolling pass is 10% -18%, the surface roughness Ra is controlled to be 0.2-0.8 mu m, and finally obtaining a cold rolled strip;

step S3: film deposited on surface of cold-rolled strip

Cleaning the surface of the cold-rolled strip obtained in the step S2, and depositing a copper film on the surface of the cold-rolled strip to obtain a composite strip, wherein the thickness of the film is 0.5-10 mu m, the purity of the film is more than 99.99%, and the deposition method is a magnetron sputtering method, wherein the sputtering power is 200-250W, and the sputtering temperature is 120-200 ℃;

step S4: annealing of composite strip

And (4) carrying out high-temperature annealing on the composite strip obtained in the step S3, wherein the high-temperature annealing process comprises the following steps: heating to 800 ℃ in a furnace heating mode, preserving heat for 1-2 hours, cooling to room temperature in the furnace, and finally obtaining the metal composite base band with strong texture.

Technical Field

The invention relates to a preparation method of a metal composite base band with strong texture, belonging to the technical field of preparation of textured metal substrates for second-generation coating superconducting tapes.

Background

The high-temperature superconducting strip has special physical properties, so that the high-temperature superconducting strip has wide application value in various fields of traffic, military and the like, since the second generation high-temperature coating superconducting strip is invented, people have raised the heat tide of coating superconducting research, the epitaxial growth of a buffer layer and a superconducting layer on a tough metal substrate with a strong cubic texture is one of the main methods for preparing the second generation coating superconducting strip, the metal substrate has the function of epitaxially growing an outer film, the texture of the film has important influence on the electrical properties of the superconducting strip, the superconducting layer with the strong cubic texture has high critical current density, and the metal substrate with the strong cubic texture is the key for preparing the film with the strong texture, so the problem of the strong texture of the metal substrate is the key point of the research in the field of the metal substrate. In addition to the requirement for a strong cubic texture of the metal substrate, the metal substrate should also have a high yield strength and be non-ferromagnetic in the liquid nitrogen temperature range. Currently, commercial Ni-5at.% W alloy basebands readily achieve strong cubic texture, but their yield strength at room temperature is not high and they are ferromagnetic in the liquid nitrogen temperature region. Research shows that increasing the content of tungsten atoms can effectively improve the yield strength of the nickel-tungsten alloy and reduce the magnetic performance, but the traditional method is difficult to form a strong cubic texture, so that the preparation of the high-performance metal base band still has great difficulty, and how to develop a new alloy system to prepare the high-performance metal base band has important research value and industrial significance.

Disclosure of Invention

The invention aims to provide a preparation method of a metal composite baseband with strong texture, which can finally obtain a high-performance metal composite baseband.

The invention adopts the following technical scheme for realizing the aim, and the preparation method of the metal composite baseband with strong texture is characterized by comprising the following specific steps:

step S1: preparation of initial ingot

The alloy ingot is obtained by vacuum induction melting, and comprises the following components: 9.5at.% to 12at.% W, and the balance being Ni, and then obtaining a nickel-tungsten alloy hot rolled plate by hot rolling, wherein the thickness is 7 to 9mm, and the hot rolling temperature is controlled to be 1000 to 1200 ℃;

step S2: cold rolling of hot rolled sheet

Carrying out large-deformation cold rolling on the hot rolled plate obtained in the step S1 to a thickness of 80-100 mu m, wherein no annealing treatment is carried out in the middle of the cold rolling, the deformation of the last cold rolling pass is 10% -18%, the surface roughness Ra is controlled to be 0.2-0.8 mu m, and finally obtaining a cold rolled strip;

step S3: film deposited on surface of cold-rolled strip

Cleaning the surface of the cold-rolled strip obtained in the step S2, and depositing a copper film on the surface of the cold-rolled strip to obtain a composite strip, wherein the thickness of the film is 0.5-10 mu m, the purity of the film is more than 99.99%, and the deposition method is a magnetron sputtering method, wherein the sputtering power is 200-250W, and the sputtering temperature is 120-200 ℃;

step S4: annealing of composite strip

And (4) carrying out high-temperature annealing on the composite strip obtained in the step S3, wherein the high-temperature annealing process comprises the following steps: heating to 800 ℃ in a furnace heating mode, preserving heat for 1-2 hours, cooling to room temperature in the furnace, and finally obtaining the metal composite base band with strong texture.

Compared with the prior art, the invention has the following beneficial effects: the method effectively avoids texture optimization of the high-strength nickel-tungsten alloy, but deposits a layer of copper film on the surface of the high-strength non-ferromagnetic nickel-tungsten alloy strip, and can form a strong texture in the film through deposition process adjustment.

Drawings

FIG. 1 is a phi scan of a metal composite strip made in example 1;

FIG. 2 is a phi scan of the metal composite baseband obtained in example 2.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings. The energy storage performance of the prepared polymer-based flexible composite film material is measured by adopting a US QUATEK INC ferroelectric working instrument, and the performance parameters are measured at room temperature.