CN106346008B - A kind of preparation method of no ferromagnetism texture nickel tungsten/nickel vanadium/nickel tungsten composite baseband - Google Patents
A kind of preparation method of no ferromagnetism texture nickel tungsten/nickel vanadium/nickel tungsten composite baseband Download PDFInfo
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- MOWMLACGTDMJRV-UHFFFAOYSA-N nickel tungsten Chemical compound [Ni].[W] MOWMLACGTDMJRV-UHFFFAOYSA-N 0.000 title claims abstract description 101
- 239000002131 composite material Substances 0.000 title claims abstract description 65
- HBVFXTAPOLSOPB-UHFFFAOYSA-N nickel vanadium Chemical compound [V].[Ni] HBVFXTAPOLSOPB-UHFFFAOYSA-N 0.000 title claims abstract description 62
- 230000005307 ferromagnetism Effects 0.000 title claims abstract description 9
- 238000002360 preparation method Methods 0.000 title claims description 16
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 11
- 239000011812 mixed powder Substances 0.000 claims abstract description 10
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 10
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 9
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000010937 tungsten Substances 0.000 claims abstract description 9
- 238000005516 engineering process Methods 0.000 claims abstract description 7
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 7
- 238000000498 ball milling Methods 0.000 claims abstract description 6
- 238000005245 sintering Methods 0.000 claims description 13
- 238000001953 recrystallisation Methods 0.000 claims description 9
- 238000005097 cold rolling Methods 0.000 claims description 6
- 239000011162 core material Substances 0.000 claims description 6
- GASIKMKYFQCHDL-UHFFFAOYSA-N [W].[Ni].[V].[Ni].[W].[Ni] Chemical compound [W].[Ni].[V].[Ni].[W].[Ni] GASIKMKYFQCHDL-UHFFFAOYSA-N 0.000 claims description 5
- 238000004321 preservation Methods 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims 5
- 238000005253 cladding Methods 0.000 claims 1
- 238000002844 melting Methods 0.000 claims 1
- 230000008018 melting Effects 0.000 claims 1
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 claims 1
- 229910001080 W alloy Inorganic materials 0.000 abstract description 25
- 239000000758 substrate Substances 0.000 abstract description 20
- 239000010410 layer Substances 0.000 abstract description 11
- 230000005294 ferromagnetic effect Effects 0.000 abstract description 10
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 abstract description 6
- 238000003723 Smelting Methods 0.000 abstract description 5
- 239000012792 core layer Substances 0.000 abstract description 5
- 238000002490 spark plasma sintering Methods 0.000 abstract description 5
- 238000001816 cooling Methods 0.000 abstract 1
- 238000005096 rolling process Methods 0.000 abstract 1
- -1 tungsten-nickel-vanadium-nickel-tungsten Chemical compound 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 description 8
- 229910000756 V alloy Inorganic materials 0.000 description 7
- 230000003647 oxidation Effects 0.000 description 6
- 238000007254 oxidation reaction Methods 0.000 description 6
- 229910045601 alloy Inorganic materials 0.000 description 5
- 239000000956 alloy Substances 0.000 description 5
- 238000000227 grinding Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 230000005291 magnetic effect Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052797 bismuth Inorganic materials 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 239000002887 superconductor Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
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Abstract
本发明公开了一种无铁磁性织构镍钨/镍钒/镍钨复合基带的制备方法，将熔炼得到的钨的原子百分含量为9.5%‑11%的镍钨合金表面的氧化皮打磨后，作为复合坯锭的外层材料，将球磨获得的钒的原子百分含量为10%的镍钒混合粉末，作为复合坯锭的芯层材料，将镍钨合金和镍钒混合粉末按照镍钨‑镍钒‑镍钨的顺序放置到模具中，采用放电等离子体烧结技术获得镍钨/镍钒/镍钨复合坯锭；将镍钨/镍钒/镍钨复合坯锭进行大变形量冷轧，道次变形量为10%‑15%，总变形量为99.5%‑99.9%，最后在氮气保护气氛下采用1250‑1350℃保温200min再结晶热处理得到无铁磁性、高强度、强立方织构的镍钨/镍钒/镍钨复合基带。本发明制得的镍钨/镍钒/镍钨复合基带无铁磁性、高机械强度且具有强立方织构。
The invention discloses a method for preparing a non-ferromagnetic textured nickel-tungsten/nickel-vanadium/nickel-tungsten composite substrate. The oxide skin on the surface of the nickel-tungsten alloy with the tungsten atomic percentage of 9.5%-11% obtained by smelting is polished. Finally, as the outer layer material of the composite ingot, the nickel-vanadium mixed powder with a vanadium atomic percentage of 10% obtained by ball milling is used as the core layer material of the composite ingot, and the nickel-tungsten alloy and the nickel-vanadium mixed powder are mixed according to the nickel-vanadium mixed powder. The order of tungsten-nickel-vanadium-nickel-tungsten is placed in the mold, and the nickel-tungsten/nickel-vanadium/nickel-tungsten composite billet is obtained by spark plasma sintering technology; the nickel-tungsten/nickel-vanadium/nickel-tungsten composite billet is subjected to large deformation cooling Rolling, the deformation of each pass is 10%-15%, and the total deformation is 99.5%-99.9%. Finally, under the nitrogen protection atmosphere, it is heat-treated at 1250-1350°C for 200 minutes to obtain non-ferromagnetic, high-strength, and strong cubic weave. Structured nickel-tungsten/nickel-vanadium/nickel-tungsten composite substrate. The nickel-tungsten/nickel-vanadium/nickel-tungsten composite substrate prepared by the invention has no ferromagnetism, high mechanical strength and strong cubic texture.
Description
技术领域technical field
本发明属于高温涂层超导带材用金属基带技术领域，具体涉及一种无铁磁性织构镍钨/镍钒/镍钨复合基带的制备方法。The invention belongs to the technical field of metal substrates for high-temperature coated superconducting strips, and in particular relates to a preparation method of a non-ferromagnetic textured nickel-tungsten/nickel-vanadium/nickel-tungsten composite substrate.
背景技术Background technique
第二代高温超导带材由于比第一代铋系超导材料具有更优越的性能，因而有望在超导变压器、超导电机和超导限流器等强电领域实现其应用。制备高性能的金属基带是获得高性能涂层超导体的关键，在目前多种应用于涂层导体的金属合金基带中，镍钨合金基带是人们研究最系统、最深入的基带材料之一，目前Ni5at.%W（Ni5W）合金基带已经商业化生产，但是，由于其在液氮温区下仍然具有铁磁性且屈服强度较低，而高钨含量的镍钨合金即无铁磁性、高强度的镍钨合金基带难以通过传统的基带制备路线获得强立方织构，因而限制了涂层超导带材的进一步应用。为了进一步提高Ni5W合金基带的机械性能且降低铁磁性，制备无磁性织构Ni基合金复合基带可以有效解决基带机械性能和磁性能的问题。有研究人员通过镍钒与镍钨合金复合制备了层状复合基带，此类复合基带分为三层结构，外层初始材料为无铁磁性镍钒合金，芯层初始材料为无铁磁性镍钨合金，通过一定的制备方法得到了复合基带，其制备思路是将容易得到立方织构的镍钒合金作为复合基带的外层材料，将无铁磁性、高强度的镍钨合金作为复合基带的芯层材料，最终的复合带材表面可以获得强立方织构，复合基带整体具有高的屈服强度，且在液氮温区无铁磁性，但是镍钒合金抗氧化性较差，在最终的再结晶热处理中通过一定的保护气氛也很难避免复合基带表面的氧化。因此，如何合理设计复合基带的制备思路，优化复合基带的结构来提高复合基带的抗氧化性能是获得高性能复合基带的关键。Because the second-generation high-temperature superconducting tape has superior performance than the first-generation bismuth-based superconducting materials, it is expected to realize its application in strong electric fields such as superconducting transformers, superconducting motors and superconducting current limiters. The preparation of high-performance metal substrates is the key to obtaining high-performance coated superconductors. Among the various metal alloy substrates currently used in coated conductors, nickel-tungsten alloy substrates are one of the most systematic and in-depth researched substrate materials. At present Ni5at.%W (Ni5W) alloy base strip has been commercially produced, but because it still has ferromagnetism and low yield strength in the liquid nitrogen temperature zone, the nickel-tungsten alloy with high tungsten content is non-ferromagnetic and high-strength It is difficult for nickel-tungsten alloy substrates to obtain a strong cubic texture through traditional substrate preparation routes, thus limiting the further application of coated superconducting tapes. In order to further improve the mechanical properties of the Ni5W alloy baseband and reduce the ferromagnetism, the preparation of a non-magnetic textured Ni-based alloy composite baseband can effectively solve the problems of the baseband's mechanical and magnetic properties. Some researchers have prepared a layered composite baseband by compounding nickel-vanadium and nickel-tungsten alloy. This kind of composite baseband is divided into three layers. The initial material of the outer layer is non-ferromagnetic nickel-vanadium alloy, and the initial material of the core layer is non-ferromagnetic nickel-tungsten. Alloy, through a certain preparation method to obtain the composite baseband, the preparation idea is to use the nickel-vanadium alloy which is easy to obtain the cubic texture as the outer material of the composite baseband, and use the non-ferromagnetic, high-strength nickel-tungsten alloy as the core of the composite baseband Layer material, the final composite strip surface can obtain a strong cubic texture, the composite base strip has a high yield strength as a whole, and has no ferromagnetism in the liquid nitrogen temperature zone, but the nickel-vanadium alloy has poor oxidation resistance, and in the final recrystallization It is also difficult to avoid oxidation of the surface of the composite substrate through a certain protective atmosphere during heat treatment. Therefore, how to reasonably design the preparation ideas of the composite baseband and optimize the structure of the composite baseband to improve the oxidation resistance of the composite baseband is the key to obtain a high-performance composite baseband.
发明内容Contents of the invention
本发明的目的是克服镍钒/镍钨/镍钒系复合基带抗氧化性差的缺点，通过合理设计复合基带的层间结构及工艺路线，提供了一种无铁磁性织构镍钨/镍钒/镍钨复合基带的制备方法。The purpose of the present invention is to overcome the shortcoming of poor oxidation resistance of nickel-vanadium/nickel-tungsten/nickel-vanadium composite baseband, and provide a non-ferromagnetic textured nickel-tungsten/nickel-vanadium by rationally designing the interlayer structure and process route of the composite baseband /The preparation method of nickel-tungsten composite substrate.
本发明为实现上述目的采用如下技术方案，一种无铁磁性织构镍钨/镍钒/镍钨复合基带的制备方法，其特征在于包括以下步骤：In order to achieve the above object, the present invention adopts the following technical scheme, a method for preparing a ferromagnetic textured nickel-tungsten/nickel-vanadium/nickel-tungsten composite substrate, which is characterized in that it includes the following steps:
步骤1、复合坯锭的制备Step 1, preparation of composite ingot
将熔炼得到的钨的原子百分含量为9.5%-11%的镍钨合金表面的氧化皮打磨后，作为复合坯锭的外层材料，将球磨获得的钒的原子百分含量为10%的镍钒混合粉末，作为复合坯锭的芯层材料；将镍钨合金和镍钒混合粉末按照镍钨-镍钒-镍钨的顺序放置到模具中，采用放电等离子体烧结技术获得镍钨/镍钒/镍钨复合坯锭，其中放电等离子体烧结工艺为：在680-720℃保温5min，烧结压力为30-40MPa；After grinding the oxide skin on the surface of nickel-tungsten alloy with 9.5%-11% tungsten atomic percentage obtained by smelting, it is used as the outer layer material of the composite ingot, and the vanadium obtained by ball milling is 10 atomic % Nickel-vanadium mixed powder is used as the core material of the composite billet; nickel-tungsten alloy and nickel-vanadium mixed powder are placed in the mold in the order of nickel-tungsten-nickel-vanadium-nickel-tungsten, and nickel-tungsten/nickel-tungsten is obtained by spark plasma sintering technology. Vanadium/nickel-tungsten composite ingot, wherein the discharge plasma sintering process is: holding at 680-720°C for 5 minutes, and the sintering pressure is 30-40MPa;
步骤2、复合坯锭的冷轧及再结晶热处理Step 2, cold rolling and recrystallization heat treatment of the composite ingot
将烧结得到的镍钨/镍钒/镍钨复合坯锭进行大变形量冷轧，道次变形量为10%-15%，总变形量为99.5%-99.9%，最后在氮气保护气氛下采用1250-1350℃保温200min再结晶热处理得到无铁磁性、高强度、强立方织构的镍钨/镍钒/镍钨复合基带。The nickel-tungsten/nickel-vanadium/nickel-tungsten composite ingot obtained by sintering is subjected to large-deformation cold rolling, the deformation of each pass is 10%-15%, and the total deformation is 99.5%-99.9%. Finally, it is used under a nitrogen protective atmosphere. The nickel-tungsten/nickel-vanadium/nickel-tungsten composite substrate with non-ferromagnetism, high strength and strong cubic texture was obtained by heat treatment at 1250-1350°C for 200 minutes.
本发明制得的镍钨/镍钒/镍钨复合基带具有以下优点：The nickel-tungsten/nickel-vanadium/nickel-tungsten composite substrate prepared by the present invention has the following advantages:
1、本发明制备的复合基带内外层初始材料均为无铁磁性合金，该复合基带在液氮温区无铁磁性；1. The initial material of the inner and outer layers of the composite baseband prepared by the present invention is a non-ferromagnetic alloy, and the composite baseband has no ferromagnetism in the liquid nitrogen temperature zone;
2、本发明制备的复合基带外层初始材料为镍钨合金，芯层初始材料为镍钒合金，表面的镍钨合金的抗氧化性较强，这样避免了复合基带在最终再结晶热处理过程中镍钒合金的氧化；2. The initial material of the outer layer of the composite baseband prepared by the present invention is nickel-tungsten alloy, the initial material of the core layer is nickel-vanadium alloy, and the oxidation resistance of the nickel-tungsten alloy on the surface is strong, which avoids the final recrystallization heat treatment process of the composite baseband. Oxidation of nickel-vanadium alloys;
3、本发明制备的镍钨/镍钒/镍钨复合基带与镍钒/镍钨/镍钒复合基带相比，在同等层间厚度比的条件下镍钨/镍钒/镍钨复合基带具有更高的机械强度；3. Compared with the nickel-vanadium/nickel-tungsten/nickel-vanadium composite baseband prepared by the present invention, the nickel-tungsten/nickel-vanadium/nickel-tungsten composite baseband has higher mechanical strength;
4、本发明制备的复合基带表层初始材料为高钨含量的镍钨合金，对于高钨含量的镍钨合金而言，难以通过传统的基带制备路线在其表面获得强立方织构，本发明利用芯层镍钒合金容易获得立方织构的特点，在高温长时间的再结晶热处理过程中，利用芯层镍钒合金中立方织构的形核及长大优势逐渐吞并复合基带外层及表面的非立方织构，进而在复合基带表面获得强立方织构。4. The initial material of the surface layer of the composite baseband prepared by the present invention is nickel-tungsten alloy with high tungsten content. For nickel-tungsten alloy with high tungsten content, it is difficult to obtain a strong cubic texture on the surface through the traditional baseband preparation route. The present invention utilizes The core layer of nickel-vanadium alloy is easy to obtain the characteristics of cubic texture. During the high-temperature and long-term recrystallization heat treatment process, the advantages of nucleation and growth of the cubic texture in the core layer of nickel-vanadium alloy are gradually annexed to the outer layer and surface of the composite base. Non-cubic texture, and then a strong cubic texture is obtained on the surface of the composite substrate.
附图说明Description of drawings
图1是本发明实施例1制得的镍钨/镍钒/镍钨复合基带表面的（001）面极图；Fig. 1 is the (001) surface pole figure of the surface of the nickel-tungsten/nickel-vanadium/nickel-tungsten composite substrate prepared in Example 1 of the present invention;
图2是本发明实施例2制得的镍钨/镍钒/镍钨复合基带表面的（001）面极图；Fig. 2 is the (001) surface pole figure of the surface of the nickel-tungsten/nickel-vanadium/nickel-tungsten composite substrate prepared in Example 2 of the present invention;
图3是本发明实施例3制得的镍钨/镍钒/镍钨复合基带表面的（001）面极图。Fig. 3 is a (001) surface pole figure of the surface of the nickel-tungsten/nickel-vanadium/nickel-tungsten composite substrate prepared in Example 3 of the present invention.
具体实施方式Detailed ways
以下通过实施例对本发明的上述内容做进一步详细说明，但不应该将此理解为本发明上述主题的范围仅限于以下的实施例，凡基于本发明上述内容实现的技术均属于本发明的范围。The above-mentioned contents of the present invention are described in further detail below through the embodiments, but this should not be interpreted as the scope of the above-mentioned themes of the present invention being limited to the following embodiments, and all technologies realized based on the above-mentioned contents of the present invention all belong to the scope of the present invention.
实施例1Example 1
将熔炼得到的钨的原子百分含量为9.5%的镍钨合金表面的氧化皮打磨后，作为复合坯锭的外层材料；将球磨获得的钒的原子百分含量为10%的镍钒混合粉末，作为复合坯锭的芯层材料；将镍钨合金和镍钒混合粉末按照镍钨-镍钒-镍钨的顺序放置到模具中，厚度比为1:1:1，采用放电等离子体烧结技术获得镍钨/镍钒/镍钨复合坯锭，其中放电等离子体烧结工艺为：在680℃保温5min，烧结压力为30MPa；将烧结得到的镍钨/镍钒/镍钨复合坯锭进行大变形量冷轧，道次变形量为10%，总变形量为99.5%-99.9%，最后在氮气保护气氛下采用1250℃保温200min再结晶热处理得到镍钨/镍钒/镍钨复合基带。该镍钨/镍钒/镍钨合金基带的（001）面极图如图1所示，由图可知该镍钨/镍钒/镍钨合金基带具有强立方织构；该镍钨/镍钒/镍钨复合基带在室温下的屈服强度达到了290MPa，能很好的满足第二代涂层超导带材的制备及应用。After grinding the oxide skin on the surface of nickel-tungsten alloy with 9.5 atomic percent of tungsten obtained from smelting, it is used as the outer layer material of the composite ingot; the nickel-vanadium mixed with 10 atomic percent of vanadium obtained by ball milling Powder, as the core material of the composite billet; the nickel-tungsten alloy and nickel-vanadium mixed powder are placed in the mold in the order of nickel-tungsten-nickel-vanadium-nickel-tungsten, with a thickness ratio of 1:1:1, and spark plasma sintering is used technology to obtain nickel-tungsten/nickel-vanadium/nickel-tungsten composite ingot, in which the discharge plasma sintering process is: heat preservation at 680°C for 5 minutes, sintering pressure is 30MPa; the sintered nickel-tungsten/nickel-vanadium/nickel-tungsten composite ingot Deformation cold rolling, the pass deformation is 10%, and the total deformation is 99.5%-99.9%. Finally, the nickel-tungsten/nickel-vanadium/nickel-tungsten composite base belt is obtained by recrystallization heat treatment at 1250°C for 200min under nitrogen protection atmosphere. The (001) surface pole figure of the nickel-tungsten/nickel-vanadium/nickel-tungsten alloy baseband is shown in Figure 1. It can be seen from the figure that the nickel-tungsten/nickel-vanadium/nickel-tungsten alloy baseband has a strong cubic texture; the nickel-tungsten/nickel-vanadium The yield strength of the /nickel-tungsten composite base tape at room temperature reaches 290 MPa, which can well meet the preparation and application of the second-generation coated superconducting tape.
实施例2Example 2
将熔炼得到的钨的原子百分含量为10%的镍钨合金表面的氧化皮打磨后，作为复合坯锭的外层材料；将球磨获得的钒的原子百分含量为10%的镍钒混合粉末，作为复合坯锭的芯层材料；将镍钨合金和镍钒混合粉末按照镍钨-镍钒-镍钨的顺序放置到模具中，厚度比为1:1:1，采用放电等离子体烧结技术获得镍钨/镍钒/镍钨复合坯锭，其中放电等离子体烧结工艺为：在700℃保温5min，烧结压力为35MPa；将烧结得到的镍钨/镍钒/镍钨复合坯锭进行大变形量冷轧，道次变形量为12%，总变形量为99.5%-99.9%，最后在氮气保护气氛下采用1280℃保温200min再结晶热处理得到镍钨/镍钒/镍钨复合基带。该镍钨/镍钒/镍钨合金基带的（001）面极图如图2所示，由图可知该镍钨/镍钒/镍钨合金基带具有强立方织构；该镍钨/镍钒/镍钨复合基带在室温下的屈服强度达到了295MPa，能很好的满足第二代涂层超导带材的制备及应用。After grinding the oxide skin on the surface of nickel-tungsten alloy with 10 atomic percent of tungsten obtained from smelting, it is used as the outer layer material of the composite ingot; the mixed nickel-vanadium with 10 atomic percent of vanadium obtained by ball milling Powder, as the core material of the composite billet; the nickel-tungsten alloy and nickel-vanadium mixed powder are placed in the mold in the order of nickel-tungsten-nickel-vanadium-nickel-tungsten, with a thickness ratio of 1:1:1, and spark plasma sintering is used Nickel-tungsten/nickel-vanadium/nickel-tungsten composite billets were obtained through technology, and the discharge plasma sintering process was: holding at 700°C for 5 minutes, and the sintering pressure was 35MPa; The deformation is cold rolled, the deformation of each pass is 12%, and the total deformation is 99.5%-99.9%. Finally, the nickel-tungsten/nickel-vanadium/nickel-tungsten composite base belt is obtained by recrystallization heat treatment at 1280°C for 200min under a nitrogen protective atmosphere. The (001) surface pole figure of the nickel-tungsten/nickel-vanadium/nickel-tungsten alloy baseband is shown in Figure 2. It can be seen from the figure that the nickel-tungsten/nickel-vanadium/nickel-tungsten alloy baseband has a strong cubic texture; the nickel-tungsten/nickel-vanadium The yield strength of the /nickel-tungsten composite base tape at room temperature reaches 295MPa, which can well meet the preparation and application of the second-generation coated superconducting tape.
实施例3Example 3
将熔炼得到的钨的原子百分含量为11%的镍钨合金表面的氧化皮打磨后，作为复合坯锭的外层材料；将球磨获得的钒的原子百分含量为10%的镍钒混合粉末，作为复合坯锭的芯层材料；将镍钨合金和镍钒混合粉末按照镍钨-镍钒-镍钨的顺序放置到模具中，厚度比为1:1:1，采用放电等离子体烧结技术获得镍钨/镍钒/镍钨复合坯锭，其中放电等离子体烧结工艺为：在720℃保温5min，烧结压力为40MPa；将烧结得到的镍钨/镍钒/镍钨复合坯锭进行大变形量冷轧，道次变形量为15%，总变形量为99.5%-99.9%，最后在氮气保护气氛下采用1350℃保温200min再结晶热处理得到镍钨/镍钒/镍钨复合基带。该镍钨/镍钒/镍钨合金基带的（001）面极图如图3所示，由图可知该镍钨/镍钒/镍钨合金基带具有强立方织构；该镍钨/镍钒/镍钨复合基带在室温下的屈服强度达到了310MPa，能很好的满足第二代涂层超导带材的制备及应用。After grinding the oxide skin on the surface of the nickel-tungsten alloy with 11 atomic percent of tungsten obtained from smelting, it is used as the outer layer material of the composite billet; the nickel-vanadium mixed with 10 atomic percent of vanadium obtained by ball milling Powder, as the core material of the composite billet; the nickel-tungsten alloy and nickel-vanadium mixed powder are placed in the mold in the order of nickel-tungsten-nickel-vanadium-nickel-tungsten, with a thickness ratio of 1:1:1, and spark plasma sintering is used technology to obtain nickel-tungsten/nickel-vanadium/nickel-tungsten composite ingot, in which the discharge plasma sintering process is: hold at 720°C for 5 minutes, and the sintering pressure is 40MPa; the nickel-tungsten/nickel-vanadium/nickel-tungsten composite ingot Deformation cold rolling, the pass deformation is 15%, and the total deformation is 99.5%-99.9%. Finally, the nickel-tungsten/nickel-vanadium/nickel-tungsten composite base belt is obtained by recrystallization heat treatment at 1350°C for 200min under nitrogen protection atmosphere. The (001) surface pole figure of the nickel-tungsten/nickel-vanadium/nickel-tungsten alloy baseband is shown in Figure 3. It can be seen from the figure that the nickel-tungsten/nickel-vanadium/nickel-tungsten alloy baseband has a strong cubic texture; the nickel-tungsten/nickel-vanadium The yield strength of the /nickel-tungsten composite base tape at room temperature reaches 310MPa, which can well meet the preparation and application of the second-generation coated superconducting tape.
以上实施例描述了本发明的基本原理、主要特征及优点，本行业的技术人员应该了解，本发明不受上述实施例的限制，上述实施例和说明书中描述的只是说明本发明的原理，在不脱离本发明原理的范围下，本发明还会有各种变化和改进，这些变化和改进均落入本发明保护的范围内。The above embodiments have described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What are described in the above embodiments and description are only to illustrate the principles of the present invention. Without departing from the scope of the principle of the present invention, there will be various changes and improvements in the present invention, and these changes and improvements all fall within the protection scope of the present invention.
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