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Ni-base alloy composite baseband and method for preparing discharge plasma thereof

A technology of composite base strip and base alloy, applied in the direction of metal rolling, metal rolling, metal processing equipment, etc., can solve the problems of reducing the magnetic properties of the base strip, low magnetic properties, easy cracking of the surface layer and core layer, etc., so as to avoid weak bonding force. , good bonding effect

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

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to use discharge plasma sintering technology to enhance the bonding force between the inner and outer layers of the composite base tape, solve the problems that the surface layer and the core layer are easy to crack and it is difficult to obtain high-strength biaxial cubic texture in the preparation process of the existing composite base tape, and at the same time improve The mechanical strength of the NiW alloy baseband reduces the magnetism of the baseband, and provides a high-strength, low-magnetism, strong biaxial cubic texture Ni-based alloy composite baseband and its discharge plasma preparation method for YBCO coated superconducting strips

Method used

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  • Ni-base alloy composite baseband and method for preparing discharge plasma thereof
  • Ni-base alloy composite baseband and method for preparing discharge plasma thereof
  • Ni-base alloy composite baseband and method for preparing discharge plasma thereof

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Effect test

Embodiment 1

[0026] The prepared A powder (the atomic percent of W is 10%) and B ingot (the atomic percent of W is 5%) are layered into the mold in the order of B-A-B; using spark plasma sintering technology, Put the mold filled with materials into the sintering equipment (SPS-3.20-MV spark plasma sintering equipment produced in Japan), and sinter under vacuum conditions while pressurizing, the sintering temperature is 850 ° C, and the time is 60 minutes; The composite billet is cold-rolled, the deformation of each pass is 8-20%, and the total deformation is greater than 95%, and the cold-rolled base strip with a thickness of 100 μm is obtained; the cold-rolled base strip is annealed at 700 ° C for 30 minutes, and then heated to 1100 ° C Annealed for 60 minutes to obtain the final Ni-based alloy composite substrate. The topography of the Ni-based alloy composite substrate section is shown in figure 1 ; The (111) surface pole figure of the baseband is as follows figure 2 Shown; The yield...

Embodiment 2

[0028] The prepared A powder (the atomic percentage of W is 9.3%) and B ingot (the atomic percentage of W is 7%) are layered into the mold in the order of B-A-B; using spark plasma sintering technology, Put the mold filled with materials into the sintering equipment (SPS-3.20-MV spark plasma sintering equipment produced in Japan), and sinter under vacuum conditions while pressurizing. The sintering temperature is 1000 ° C and the time is 20 minutes; The composite ingot is cold-rolled, the pass deformation is 5-13%, the total deformation is greater than 95%, and the thickness of the cold-rolled base strip is 200 μm; 2 Annealing at 1000° C. for 2 h under a protective atmosphere of mixed gas to obtain a Ni-based alloy composite substrate as a final product. The (111) surface pole figure of the composite baseband is as follows image 3 Shown; The strength of this composite substrate is also greatly improved, and the yield strength value at room temperature is 325MPa, which is 8.1...

Embodiment 3

[0030] The prepared A powder (the atomic percentage of W is 12%) and B ingot (the atomic percentage of W is 5%) are layered into the mold in the order of B-A-B; using spark plasma sintering technology, Put the mold filled with the material into the sintering equipment (SPS-3.20-MV spark plasma sintering equipment produced in Japan), and sinter under vacuum conditions while pressurizing, the sintering temperature is 900 ° C, and the time is 30 minutes; The composite ingot is cold-rolled, the pass deformation is 5-10%, and the total deformation is greater than 95%, and the thickness obtained is 180 μm cold-rolled base strip; the cold-rolled base strip is vacuum-conditioned (10 -6 Pa) and annealed at 1300° C. for 0.5 h to obtain the final Ni-based alloy composite substrate. The (111) pole figure of the baseband is as follows Figure 4Shown; The strength of this composite substrate is also greatly improved, and the yield strength value at room temperature is 380MPa, which is 9.5 ...

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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 preparing method is to put the NiW alloy casting ingot or powder whose W atom percent are 3-7% and 9.3-12% separately according to B-A-B casting ingot order, and use the discharging plasma agglomeration technique to obtain the compound ingot under 850-1000deg C in vacuum. Then rolling the compound ingot to obtain the radical strip with the thickness of 60-200 mum, wherein the path distortion is 5-20%, the total distortion is more than 95%, then doing anneal with the radical strip in Ar / H2 or vacuum and under 1000-1300deg C; or doing anneal for 30-60min, and rising the temperature up to 1100deg C, then doing 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): C22C19/03B32B15/01C22C1/02B22F3/14B21B37/16B21B37/74C22F1/10
Inventor 索红莉赵跃刘敏何东张迎肖马驎李亚明张子立周美玲
Owner BEIJING UNIV OF TECH
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