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Ni-base alloy composite baseband and its smelting preparation method

A composite baseband and base alloy technology, applied in the direction of metal rolling, metal rolling, metal processing equipment, etc., can solve the problems of reducing baseband magnetism, low magnetism, surface layer and core layer are easy to crack, and achieve good combination effect

Inactive Publication Date: 2006-10-11
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the surface layer and the core layer are easy to crack and it is difficult to obtain a strong biaxial cubic texture in the preparation process of the existing composite base belt by preparing a Ni-based alloy composite base belt with a multilayer structure, and at the same time improve the Ni-based alloy base belt. mechanical strength, reduce baseband magnetism, provide a high strength, low magnetism, strong biaxial cubic texture Ni-based alloy composite baseband and its smelting preparation method for YBCO coated superconducting strips

Method used

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  • Ni-base alloy composite baseband and its smelting preparation method
  • Ni-base alloy composite baseband and its smelting preparation method
  • Ni-base alloy composite baseband and its smelting preparation method

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Effect test

Embodiment 1

[0027] The NiW mixed block with 5 atomic percent of W and the NiW mixed block with 9.3 atomic percent of W were melted under vacuum conditions at 1500°C to form NiW alloy solid solution, then cast and forged to obtain high Initial ingots of Ni alloy with W content (code named A) and Ni alloy with low W content (code named B); the initial ingots B and A are cut into small pieces of certain thickness according to the thickness ratio of 1:1 , cold pressed together in the order of B-connecting layer-A-connecting layer-B to obtain a composite ingot, and the thickness of the composite ingot is 6mm. Composite ingots of the above mechanically pressed together in Ar / H 2 Sintering at 750°C for 8 hours in a mixed gas protective atmosphere can obtain a sintered Ni-based alloy composite ingot; cold-roll the sintered Ni-based alloy composite ingot with a deformation of 10-20% per pass, and the total The amount of deformation is greater than 95%, and a cold-rolled base strip with a thicknes...

Embodiment 2

[0029] The NiW mixed block with 5 atomic percent of W and the NiW mixed block with 12 atomic percent of W were melted under vacuum conditions at 1500°C to form NiW alloy solid solution, then cast and forged to obtain high Initial ingots of Ni alloy with W content (code named A) and Ni alloy with low W content (code named B); the initial ingots B and A are cut into small pieces of a certain thickness according to the thickness ratio of 1:2 , cold pressed together in the order of B-connection layer-A-connection layer-B to obtain a composite ingot, the thickness of the composite ingot is 12mm. Composite ingots of the above mechanically pressed together in Ar / H 2 Sintering at 900°C for 3 hours in a mixed gas protective atmosphere can obtain a sintered Ni-based alloy composite ingot; cold-roll the sintered Ni-based alloy composite ingot with a deformation of 8-15% per pass. The amount of deformation is greater than 95%, and a cold-rolled base strip with a thickness of 180 μm is ob...

Embodiment 3

[0031] The NiW mixed block with 7 atomic percent of W and the NiW mixed block with 10 atomic percent of W were smelted under vacuum conditions at 1500°C to form NiW alloy solid solution, then cast and forged to obtain high Initial ingots of Ni alloy with W content (code named A) and Ni alloy with low W content (code named B); the initial ingots B and A are cut into small pieces of certain thickness according to the thickness ratio of 1:1 , cold pressed together in the order of B-connecting layer-A-connecting layer-B to obtain a composite ingot, and the thickness of the composite ingot is 6mm. Composite ingots of the above mechanically pressed together in Ar / H 2 Sintering at 850°C for 4 hours in a mixed gas protective atmosphere can obtain a sintered Ni-based alloy composite ingot; cold-roll the sintered Ni-based alloy composite ingot with a deformation of 2-12% per pass. The amount of deformation is greater than 95%, and a cold-rolled base strip with a thickness of 200 μm is ...

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Abstract

This invention relates to a Ni radical alloy compound strip and smelt preparation method, which belongs to the high temperature coat super conduct intensified tenacity strip technique filed. The W atom percent of the surface and core of the Ni alloy compound strip are 3-7% and 9.3-12% separately. The method as follows: coldly pressing NiW alloy casting ingot whose W atom percent are 3-7% and 9.3-12% separately into one according to B-contiguous layer-A-contiguous layer-B order, in the Ar / H2 and under 750-900deg C agglomerating them for 3-8h to obtain the compound ingot, wherein B and A thickness ratio is 1: 1 to 1:4, the total thickness is 6-18mml; coldly rolling the compound ingot to obtain the radical strip whose thickness is 60-200 mum , wherein the deformation quantum is 5-20%, the total deformation quantum is more than 95%; operating anneal with the radical strip under Ar / H2 or vacuum and under 1000-1300deg C; or operating anneal under 700deg C, then rising temperature up to 1100deg C, and then operating anneal for 30-60min to obtain the Ni radical alloy compound strip. The surface and core of the radical strip is not easy to crack, it has high mechanical strength, low magnetism, and it has strong biaxial cubic organization.

Description

technical field [0001] The invention belongs to the technical field of high-temperature coating superconducting strengthening toughness baseband. Background technique [0002] Yttrium barium copper oxide (YBa 2 Cu 3 o 7 -x (often abbreviated as YBCO) coated high-temperature superconducting tapes are prepared by growing on a biaxially textured metal substrate tape with an isolation layer. Because metal Ni is easy to form biaxial cubic texture, metallic pure Ni is often used as the baseband material of YBCO strip in the early stage of coating superconductivity research, but pure Ni has ferromagnetism and low yield strength, which cannot fully meet the requirements of YBCO coating superconductivity. guide baseband application requirements. Chinese patent CN1740357 (disclosure date: 2006.3.1) discloses a certain amount of W element in solid solution in Ni to solve the above problems. When the atomic percentage of W is lower than 5% (abbreviated as Ni5W), it is easy to obtain...

Claims

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Application Information

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IPC IPC(8): C22C19/00B32B15/01B32B1/02B21B47/00B21B37/00C22F1/10
Inventor 索红莉刘敏赵跃何东张迎肖马驎周捷李亚明周美玲
Owner BEIJING UNIV OF TECH
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