A high-strength nickel-tungsten alloy substrate with strong cubic texture and its preparation method

Abstract

The invention relates to a high-strength nickel-tungsten alloy base band with a strong cubic texture, and a preparation method thereof. The preparation method comprises the following steps: proportioning a nickel block and a tungsten block according to the atom percentage content of 5.0 to 7.5 percent, putting the proportioned mixed material into a vacuum induction smelting furnace, performing smelting to obtain a nickel tungsten alloy cast ingot, and forging and hot-rolling the alloy cast ingot at a high temperature to obtain an initial blank ingot before cold rolling; removing oxidized skin from the surface of the hot-rolled blank ingot, and performing cold rolling until the thickness is 70 to 100 um and the total deformation quantity is 88 percent; electro-depositing nickel tungsten alloy coatings on the upper surface and the lower surface of the cold-rolled nickel-tungsten alloy base band, wherein the atom percentage content of the tungsten in the coatings is 15 to 18 percent; performing recrystallization annealing on the nickel-tungsten alloy base band after electro-deposition, wherein the particular process is as follows: the heating temperature is 1120 to 1170 DEG C, heat is preserved for 100 to 180 minutes, the heating rate is above 1000 DEG C / s and the protecting atmosphere is pure hydrogen. The product provided by the invention can obtain the strong cubic texture, is simple in preparation process, does not have ferromagnetism in a liquid nitrogen temperature area, and is high in yield strength, convenient in subsequent processing and suitable for industrialized production.

Description

technical field

[0001] The invention relates to a composite substrate, in particular to a high-strength nickel-tungsten alloy substrate and a preparation method thereof. Background technique

[0002] Since the discovery of high-temperature coated superconducting materials represented by YBCO, people have studied a variety of ductile metals as baseband materials for high-temperature coated superconductors. In the research of the second-generation high-temperature coated superconductor, the Ni-5at.% W alloy base strip is widely used as the base material of the high-temperature coated superconducting strip, and the transition layer and the superconducting layer are epitaxially grown. At present, there are many units The Ni-5at.% W alloy base strip can be commercially produced, but due to its low yield strength, ferromagnetism in the liquid nitrogen temperature range, etc., it cannot fully meet the requirements of more application fields.

[0003] Studies have shown that when t...

Examples

example 1

[0042] The steps for Example 1 are as follows:

[0043] The nickel block and the tungsten block are proportioned according to the atomic percentage of tungsten at 5.0%, and the mixed material after proportioning is melted in a vacuum induction melting furnace to obtain a nickel-tungsten alloy ingot, and then the alloy ingot is cast at a high temperature Under forging and hot rolling to obtain the initial billet before cold rolling;

[0044] Remove the oxide skin on the surface of the hot-rolled ingot, and then perform cold rolling to a thickness of 70-100 μm, with a total deformation of 88%;

[0045] Electrodepositing a nickel-tungsten alloy coating on the upper and lower surfaces of the cold-rolled nickel-tungsten alloy base strip, the thickness of the coating is 5-20 μm, and the atomic percentage of tungsten in the coating is 18%; and

[0046] The electro-deposited nickel-tungsten alloy substrate is subjected to recrystallization annealing. The specific process is: the heat...

example 2

[0050] The steps for Example 2 are as follows:

[0051]The nickel block and the tungsten block are proportioned according to the atomic percentage of tungsten at 7.5%, and the mixed material after proportioning is melted in a vacuum induction melting furnace to obtain a nickel-tungsten alloy ingot, and then the alloy ingot is cast at a high temperature Under forging and hot rolling to obtain the initial billet before cold rolling;

[0052] Remove the oxide skin on the surface of the hot-rolled ingot, and then perform cold rolling to a thickness of 70-100 μm, with a total deformation of 88%;

[0053] Electrodepositing a nickel-tungsten alloy coating on the upper and lower surfaces of the cold-rolled nickel-tungsten alloy base strip, the thickness of the coating is 5-20 μm, and the atomic percentage of tungsten in the coating is 18%; and

[0054] The electro-deposited nickel-tungsten alloy substrate is recrystallized and annealed. The specific process is as follows: the heating...

technical field

[0001] The invention relates to a composite substrate, in particular to a high-strength nickel-tungsten alloy substrate and a preparation method thereof. Background technique

[0002] Since the discovery of high-temperature coated superconducting materials represented by YBCO, people have studied a variety of ductile metals as baseband materials for high-temperature coated superconductors. In the research of the second-generation high-temperature coated superconductor, the Ni-5at.% W alloy base strip is widely used as the base material of the high-temperature coated superconducting strip, and the transition layer and the superconducting layer are epitaxially grown. At present, there are many units The Ni-5at.% W alloy base strip can be commercially produced, but due to its low yield strength, ferromagnetism in the liquid nitrogen temperature range, etc., it cannot fully meet the requirements of more application fields.

[0003] Studies have shown that when t...

Examples

example 1

[0042] The steps for Example 1 are as follows:

[0043] The nickel block and the tungsten block are proportioned according to the atomic percentage of tungsten at 5.0%, and the mixed material after proportioning is melted in a vacuum induction melting furnace to obtain a nickel-tungsten alloy ingot, and then the alloy ingot is cast at a high temperature Under forging and hot rolling to obtain the initial billet before cold rolling;

[0044] Remove the oxide skin on the surface of the hot-rolled ingot, and then perform cold rolling to a thickness of 70-100 μm, with a total deformation of 88%;

[0045] Electrodepositing a nickel-tungsten alloy coating on the upper and lower surfaces of the cold-rolled nickel-tungsten alloy base strip, the thickness of the coating is 5-20 μm, and the atomic percentage of tungsten in the coating is 18%; and

[0046] The electro-deposited nickel-tungsten alloy substrate is subjected to recrystallization annealing. The specific process is: the heat...

example 2

[0050] The steps for Example 2 are as follows:

[0051]The nickel block and the tungsten block are proportioned according to the atomic percentage of tungsten at 7.5%, and the mixed material after proportioning is melted in a vacuum induction melting furnace to obtain a nickel-tungsten alloy ingot, and then the alloy ingot is cast at a high temperature Under forging and hot rolling to obtain the initial billet before cold rolling;

[0052] Remove the oxide skin on the surface of the hot-rolled ingot, and then perform cold rolling to a thickness of 70-100 μm, with a total deformation of 88%;

[0053] Electrodepositing a nickel-tungsten alloy coating on the upper and lower surfaces of the cold-rolled nickel-tungsten alloy base strip, the thickness of the coating is 5-20 μm, and the atomic percentage of tungsten in the coating is 18%; and

[0054] The electro-deposited nickel-tungsten alloy substrate is recrystallized and annealed. The specific process is as follows: the heating...

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