CN1844429A - Ni-base alloy composite baseband and its smelting preparation method - Google Patents
Ni-base alloy composite baseband and its smelting preparation method Download PDFInfo
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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
The invention belongs to the high temperature coat super conduct intensified tenacity strip technique filed.
Background technology
Yttrium barium copper oxide (is YBa
2Cu
3O
7-x is abbreviated as YBCO usually) the coating high-temp superconducting tape is to be prepared from by being grown on the biaxial texture metal base band that has sealing coat.Because metal Ni is easy to form the twin shaft cubic texture, at the coating superconducting research initial stage base band materials that adopt the pure Ni of metal as the YBCO band, but pure Ni has ferromegnetism more, and yield strength is low, can not satisfy the requirement of YBCO coating superconducting base-band application fully.Chinese patent CN1740357 (open day: 2006.3.1) disclose in Ni a certain amount of W element of solid solution to address the above problem, when the atomic percentage conc of W is lower than 5% (being abbreviated as Ni5W), obtain easily strong twin shaft cubic texture, but the physical strength of base band and magnetic still can not satisfy belt material of high temperature superconduct at High-Field with the requirement of application under exchanging; And the atomic percentage conc of working as W is higher than 9.3% (being abbreviated as Ni9.3W), although the magnetic completely dissolve of base band, mechanical property also increases substantially, but the volume fraction of cubic texture sharply descends in the recrystallization texture, is difficult for the NiW alloy base band of the strong twin shaft cubic texture of preparation.In order to solve above-mentioned contradiction, Germany adopts Ni3W or Ni4.5W as outer tube respectively at 2003 (referring to document Acta Materialia 51 (2003) 4919-4927), the Ni15%Cr or Ni10%Cr1.5%Al (the being atomic percentage conc) rod that insert high strength, low magnetic therein form compound starting-ingot just as core, make composite baseband through forge hot and hot rolling then, form cubic texture by annealing at Ni3W or Ni4.5W skin at last.Although comparing pure its intensity of Ni5W alloy base band and magnetic all makes moderate progress, but this composite ingot will finally form mechanical compound alloy base band by hot rolling, just simple physics combination between the top layer of this base band and the internal layer, in the rolling and last handling process in later stage, be easy to layering and cracking, the use of hot rolling technology has had a strong impact on rolling texture in addition, the percentage composition that forms the required copper type rolling texture of recrystallize cubic texture is seriously descended, so be difficult to prepare the composite baseband of strong twin shaft cubic texture by this complex method.
Summary of the invention
The objective of the invention is Ni base alloy composite baseband by the preparation multilayered structure, solve in the existing composite baseband preparation process, top layer and sandwich layer ftracture easily, be difficult for obtaining the problem of strong twin shaft cubic texture, improve the physical strength of Ni base alloy baseband simultaneously, reduce base band magnetic, for YBCO coating superconducting band provides a kind of high strength, low magnetic, has strong twin shaft cubic texture Ni base alloy composite baseband and smelting preparation method thereof.
Ni base alloy composite baseband provided by the present invention is composited by top layer and sandwich layer, and top layer and sandwich layer are the NiW alloy that the atomic percentage conc of W is respectively 3-7% and 9.3-12%.
The smelting preparation method of Ni base alloy composite baseband provided by the present invention may further comprise the steps:
(1) proportioning raw materials and the melting of starting-ingot just
With the atomic percentage conc of W is that the atomic percentage conc of the NiW mixing pieces of 3-7% and W is that the NiW mixing pieces of 9.3-12% is smelted into NiW alloy solid solution body in 1500 ℃ respectively under vacuum condition, casting then can obtain the first starting-ingot of the Ni alloy (code name is B) of the Ni alloy (code name is A) of high W content and low W content after the forge hot;
(2) structure design and the preparation of Ni base alloy composite ingot
Is 1 with first starting-ingot B and A in the thickness ratio: 1-1: 4 ratio cuts into certain thickness fritter, according to structure as shown in Figure 1: the order of B-articulamentum-A-articulamentum-B is colded pressing and is obtained composite ingot together, the thickness of composite ingot is 6-18mm, the structure of articulamentum is: Cu paper tinsel (50 μ m)-Ag paper tinsel (150 μ m)-Cu paper tinsel (50 μ m), with the coarctate composite ingot of above-mentioned machinery at Ar/H
2In 750-900 ℃ of following sintering 3-8h, can obtain agglomerating Ni base alloy composite ingot in the mixed gas protected atmosphere;
(3) thermomechanical rolling of agglomerating composite ingot
Ni behind sintering base alloy composite ingot is carried out cold rolling, pass deformation is 2-20%, and total deflection is greater than 95%, and obtaining thickness is the cold rolling base band of 60-200 μ m;
(4) the recrystallize thermal treatment of cold rolling base band
Cold rolling base band is at Ar/H
2Under the mixed gas protected or vacuum condition in 1000-1300 ℃ of annealing 0.5-2h down; Perhaps descend annealing 30-60min, and then be warming up to 1100 ℃ of annealing 30-60min, obtain having the Ni base alloy composite baseband of twin shaft cubic texture at 700 ℃.
The present invention is an articulamentum with Cu paper tinsel-Ag paper tinsel-Cu paper tinsel, forms the chemical reaction layer by chemically sintered between the different inside and outside NiW alloy pig of W content, and they are closely adhered to together.Because the Ag fusing point is low, easy and Cu formation eutectic during low temperature, and Cu and Ni easily form sosoloid, can reduce the sintering temperature of composite ingot like this, can make between the ectonexine again and combine closely by chemical bond, solve the drawback of mechanical-physical combining method in the prior art, avoided the delamination splitting phenomenon that in follow-up thermomechanical rolling process, occurs.Can find out that from the cross section shape appearance figure (Fig. 2) of composite baseband be combined into one fully between each layer, responding layer and ectonexine interface are very clear, do not observe any cracking, show with having good binding between this composite baseband skin and the internal layer.
The present invention adopts the top layer of the NiW alloy of low W content (atomic percentage conc is less than 7.0%) as composite baseband, by having formed strong twin shaft cubic texture after the recrystallization annealing, as Fig. 3-Fig. 6, four diffraction peaks of concentrating have very much all been shown in (111) crystal face phi-scanning result on composite baseband surface, its FWHM (halfwidth degree value) shows and adopts the Ni base alloy composite baseband of the inventive method preparation to have strong twin shaft cubic texture between 7-9 °.
The present invention adopts the NiW alloy of the high W content (atomic percentage conc is greater than 9.3%) with high strength, nonmagnetic characteristics to increase the physical strength of composite baseband as sandwich layer, the yield strength value of this composite baseband sees Table 1, as shown in Table 1, the physical strength of comparing pure Ni base band and this composite baseband of Ni5W alloy base band is improved largely, yield strength value reaches as high as 225MPa, being 5.5 times of pure Ni base band yield strength value, is 1.5 times of Ni5W alloy base band yield strength value.
Adopt the magnetic hysteresis loop of the composite baseband of the inventive method preparation to the results are shown in Figure 7, as seen from the figure, under the temperature 77K that the YBCO belt material of high temperature superconduct is used, than the also reduction greatly of magnetic of pure Ni base band and this composite baseband of Ni5W alloy base band.
Description of drawings
The multilayered structure design diagram of Fig. 1: Ni base alloy composite ingot.
The scanning electronic microscope shape appearance figure in the cross section of composite baseband among Fig. 2: the embodiment 1.
(111) face Phi-scintigram on composite baseband surface among Fig. 3: the embodiment 1.
(111) face Phi-scintigram on composite baseband surface among Fig. 4: the embodiment 2.
(111) face Phi-scintigram on composite baseband surface among Fig. 5: the embodiment 3.
(111) face Phi-scintigram on composite baseband surface among Fig. 6: the embodiment 4.
Fig. 7: composite baseband and pure Ni among the embodiment 1-4, Ni5W, the magnetic hysteresis loop of Ni9.3W alloy base band.
Embodiment
Below in conjunction with drawings and Examples the present invention is described in further details.
With the atomic percentage conc of W is that the atomic percentage conc of 5% NiW mixing pieces and W is that 9.3% NiW mixing pieces is smelted into NiW alloy solid solution body in 1500 ℃ respectively under vacuum condition, casting then, forging can obtain the initial ingot casting of the Ni alloy (code name is B) of the Ni alloy (code name is A) of high W content and low W content; Is that 1: 1 ratio cuts into certain thickness fritter with initial ingot casting B and A in the thickness ratio, and cold pressing according to the order of B-articulamentum-A-articulamentum-B obtains composite ingot together, and the thickness of composite ingot is 6mm.With the coarctate composite ingot of above-mentioned machinery at Ar/H
2In 750 ℃ of following sintering 8h, can obtain agglomerating Ni base alloy composite ingot in the mixed gas protected atmosphere; Ni behind sintering base alloy composite ingot is carried out cold rolling, pass deformation is 10-20%, and total deflection is greater than 95%, and obtaining thickness is the cold rolling base band of 160 μ m; Cold rolling base band is at Ar/H
2700 ℃ of 30min that anneal down in mixed gas protected, and then be warming up to 1100 ℃ of annealing 60min down, can obtain the Ni base alloy composite baseband.The shape appearance figure in this Ni base alloy composite baseband cross section is seen Fig. 2; (111) crystal face Phi-scanning result on surface is seen Fig. 3, and its FWHM is 7.08 °; This base band yield strength value at room temperature is 195MPa, is 4.9 times of pure Ni, 1.3 times of Ni5W.The magnetic hysteresis loop of this composite baseband is seen Fig. 7, and as seen from the figure, than pure Ni base band and Ni5W alloy base band, the magnetic of this composite baseband reduces greatly.
Embodiment 2
With the atomic percentage conc of W is that the atomic percentage conc of 5% NiW mixing pieces and W is that 12% NiW mixing pieces is smelted into NiW alloy solid solution body in 1500 ℃ respectively under vacuum condition, casting then, forging can obtain the initial ingot casting of the Ni alloy (code name is B) of the Ni alloy (code name is A) of high W content and low W content; Is that 1: 2 ratio cuts into certain thickness fritter with initial ingot casting B and A in the thickness ratio, and cold pressing according to the order of B-articulamentum-A-articulamentum-B obtains composite ingot together, and the thickness of composite ingot is 12mm.With the coarctate composite ingot of above-mentioned machinery at Ar/H
2In 900 ℃ of following sintering 3h, can obtain agglomerating Ni base alloy composite ingot in the mixed gas protected atmosphere; Ni behind sintering base alloy composite ingot is carried out cold rolling, pass deformation is 8-15%, and total deflection is greater than 95%, and obtaining thickness is the cold rolling base band of 180 μ m; Cold rolling base band is at Ar/H
2Mixed gas protected down in 1200 ℃ of 0.5h that anneal down, can obtain the Ni base alloy composite baseband.(111) crystal face Phi-scanning result on this Ni base alloy composite baseband surface is seen Fig. 4, and its FWHM is 8.42 °; This base band yield strength value at room temperature is 315MPa, is 8.0 times of pure Ni, 2.0 times of Ni5W; The magnetic hysteresis loop of this composite baseband is seen Fig. 7, and as seen from the figure, than pure Ni base band and Ni5W alloy base band, the magnetic of this composite baseband reduces greatly.
With the atomic percentage conc of W is that the atomic percentage conc of 7% NiW mixing pieces and W is that 10% NiW mixing pieces is smelted into NiW alloy solid solution body in 1500 ℃ respectively under vacuum condition, casting then, forging can obtain the initial ingot casting of the Ni alloy (code name is B) of the Ni alloy (code name is A) of high W content and low W content; Is that 1: 1 ratio cuts into certain thickness fritter with initial ingot casting B and A in the thickness ratio, and cold pressing according to the order of B-articulamentum-A-articulamentum-B obtains composite ingot together, and the thickness of composite ingot is 6mm.With the coarctate composite ingot of above-mentioned machinery at Ar/H
2In 850 ℃ of following sintering 4h, can obtain agglomerating Ni base alloy composite ingot in the mixed gas protected atmosphere; Ni behind sintering base alloy composite ingot is carried out cold rolling, pass deformation is 2-12%, and total deflection is greater than 95%, and obtaining thickness is the cold rolling base band of 200 μ m; Cold rolling base band is at Ar/H
2700 ℃ of 60min that anneal down in mixed gas protected, and then be warming up to 1100 ℃ of annealing 30min down, can obtain the Ni base alloy composite baseband.(111) crystal face Phi-scanning result on this Ni base alloy composite baseband surface is seen Fig. 5, and its FWHM is 8.63 °; This base band yield strength value at room temperature is 240MPa, is 6.0 times of pure Ni, 1.6 times of Ni5W; The magnetic hysteresis loop of this composite baseband is seen Fig. 7, and as seen from the figure, than pure Ni base band and Ni5W alloy base band, the magnetic of this composite baseband reduces greatly.
Embodiment 4
With the atomic percentage conc of W is that the atomic percentage conc of 3% NiW mixing pieces and W is that 9.3% NiW mixing pieces is smelted into NiW alloy solid solution body in 1500 ℃ respectively under vacuum condition, casting then, forging can obtain the initial ingot casting of the Ni alloy (code name is B) of the Ni alloy (code name is A) of high W content and low W content; Is that 1: 4 ratio cuts into certain thickness fritter with initial ingot casting B and A in the thickness ratio, and cold pressing according to the order of B-articulamentum-A-articulamentum-B obtains composite ingot together, and the thickness of composite ingot is 18mm.With the coarctate composite ingot of above-mentioned machinery at Ar/H
2In 800 ℃ of following sintering 6h, can obtain agglomerating Ni base alloy composite ingot in the mixed gas protected atmosphere; Ni behind sintering base alloy composite ingot is carried out cold rolling, pass deformation is 5-13%, and total deflection is greater than 95%, and obtaining thickness is the cold rolling base band of 60 μ m; Cold rolling base band is at Ar/H
2Mixed gas protected down in 1000 ℃ of 2h that anneal down, can obtain the Ni base alloy composite baseband.(111) crystal face Phi-scanning result on this Ni base alloy composite baseband surface is seen Fig. 6, and its FWHM is 8.20 °; This base band yield strength value at room temperature is 225MPa, is 5.5 times of pure Ni, 1.5 times of Ni5W; The magnetic hysteresis loop of this composite baseband is seen Fig. 7, and as seen from the figure, than pure Ni base band and Ni5W alloy base band, the magnetic of this composite baseband reduces greatly.
Table 1: composite baseband yield strength at room temperature
| Embodiment | Embodiment |
| 1 | Embodiment 2 | | Embodiment 4 | |
| Composite baseband yield strength/MPa at room temperature | 195 | 315 | 240 | 225 |
| It is the multiple of pure Ni base band yield strength | 4.9 | 8.0 | 6.0 | 5.5 |
| It is the multiple of Ni5W alloy base band yield strength | 1.3 | 2.1 | 1.6 | 1.5 |
| Yield strength value/the MPa of pure Ni base band | 40 | |||
| Yield strength value/the MPa of Ni5W alloy base band | 150 |
Claims (2)
1, a kind of Ni base alloy composite baseband is composited by top layer and sandwich layer, and top layer and sandwich layer are the NiW alloy that the atomic percentage conc of W is respectively 3-7% and 9.3-12%.
2, a kind of smelting preparation method of Ni base alloy composite baseband may further comprise the steps:
(1) proportioning raw materials and the melting of starting-ingot just
With the atomic percentage conc of W is that the atomic percentage conc of the NiW mixing pieces of 3-7% and W is that the NiW mixing pieces of 9.3-12% is smelted into NiW alloy solid solution body in 1500 ℃ respectively under vacuum condition, casting then can obtain the first starting-ingot of the Ni alloy (code name is B) of the Ni alloy (code name is A) of high W content and low W content after the forge hot;
(2) structure design and the preparation of Ni base alloy composite ingot
Is 1 with first starting-ingot B and A in the thickness ratio: 1-1: 4 ratio cuts into certain thickness fritter, cold pressing according to the order of B-articulamentum-A-articulamentum-B and to obtain composite ingot together, the thickness of composite ingot is 6-18mm, the structure of articulamentum is: Cu paper tinsel (50 μ m)-Ag paper tinsel (150 μ m)-Cu paper tinsel (50 μ m), with the coarctate composite ingot of above-mentioned machinery at Ar/H
2In 750-900 ℃ of following sintering 3-8h, can obtain agglomerating Ni base alloy composite ingot in the mixed gas protected atmosphere;
(3) thermomechanical rolling of agglomerating composite ingot
Ni behind sintering base alloy composite ingot is carried out cold rolling, pass deformation is 2-20%, and total deflection is greater than 95%, and obtaining thickness is the cold rolling base band of 60-200 μ m;
(4) the recrystallize thermal treatment of cold rolling base band
Cold rolling base band is at Ar/H
2Under the mixed gas protected or vacuum condition in 1000-1300 ℃ of annealing 0.5-2h down; Perhaps descend annealing 30-60min, and then be warming up to 1100 ℃ of annealing 30-60min, obtain having the Ni base alloy composite baseband of twin shaft cubic texture at 700 ℃.
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| WO2007134515A1 (en) * | 2006-05-19 | 2007-11-29 | Beijing University Of Technology | A composite base belt of ni-based alloy for superconductor coating and a method for preparing the same |
| CN100374597C (en) * | 2006-05-19 | 2008-03-12 | 北京工业大学 | Ni-base alloy composite baseband and method for preparing discharge plasma thereof |
| CN101635187B (en) * | 2009-08-28 | 2011-01-12 | 北京工业大学 | Method for improving cubic texture of Ni-W alloy base band with high W content |
| CN103236321A (en) * | 2013-03-28 | 2013-08-07 | 北京工业大学 | Method for preparing strong-cube-texture low-magnetism compound Ni-W alloy base bands |
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| CN111187944A (en) * | 2020-01-06 | 2020-05-22 | 河南师范大学 | Preparation method of double-layer nickel-based composite baseband with strong cubic texture |
| CN113604707A (en) * | 2021-08-11 | 2021-11-05 | 广东省科学院新材料研究所 | Nickel-based high-temperature alloy, and preparation method and application thereof |
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| CN1057136C (en) * | 1997-11-19 | 2000-10-04 | 西北有色金属研究院 | Method for preparing cubic texture nickel-base strip |
| PT1208244E (en) * | 1999-04-03 | 2004-09-30 | Leibniz Inst Festkorper Werkst | METAL MATERIAL BASED ON NICKEL AND A METHOD FOR ITS PRODUCTION |
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| CN100374597C (en) * | 2006-05-19 | 2008-03-12 | 北京工业大学 | Ni-base alloy composite baseband and method for preparing discharge plasma thereof |
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| WO2007134515A1 (en) * | 2006-05-19 | 2007-11-29 | Beijing University Of Technology | A composite base belt of ni-based alloy for superconductor coating and a method for preparing the same |
| CN100374597C (en) * | 2006-05-19 | 2008-03-12 | 北京工业大学 | Ni-base alloy composite baseband and method for preparing discharge plasma thereof |
| CN100374596C (en) * | 2006-05-19 | 2008-03-12 | 北京工业大学 | Ni-base alloy composite baseband and powder metallurgy method for preparing same |
| CN101635187B (en) * | 2009-08-28 | 2011-01-12 | 北京工业大学 | Method for improving cubic texture of Ni-W alloy base band with high W content |
| CN103236321B (en) * | 2013-03-28 | 2015-11-18 | 北京工业大学 | The preparation method of a kind of strong cubic texture, low magnetic coupling type Ni-W alloy base band |
| CN103236321A (en) * | 2013-03-28 | 2013-08-07 | 北京工业大学 | Method for preparing strong-cube-texture low-magnetism compound Ni-W alloy base bands |
| CN103496205A (en) * | 2013-09-17 | 2014-01-08 | 河南师范大学 | Nonmagnetic strong-strength textured Cu-based alloy composite base band and preparation method thereof |
| CN103496205B (en) * | 2013-09-17 | 2015-12-09 | 河南师范大学 | A kind of nonmagnetic, strength texture Cu base alloy composite baseband and preparation method thereof |
| CN106113882A (en) * | 2016-06-21 | 2016-11-16 | 河南城建学院 | Without ferromagnetism, strength texture nickel vanadium/copper/nickel tungsten composite baseband preparation method |
| CN106113882B (en) * | 2016-06-21 | 2018-01-02 | 河南城建学院 | Without ferromagnetism, strength texture nickel vanadium/copper/nickel tungsten composite baseband preparation method |
| CN106399756A (en) * | 2016-08-31 | 2017-02-15 | 河南师范大学 | Preparation method of high-performance cube texture nickel base alloy baseband |
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| CN111187944A (en) * | 2020-01-06 | 2020-05-22 | 河南师范大学 | Preparation method of double-layer nickel-based composite baseband with strong cubic texture |
| CN113604707A (en) * | 2021-08-11 | 2021-11-05 | 广东省科学院新材料研究所 | Nickel-based high-temperature alloy, and preparation method and application thereof |
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