US3271200A - Process for the production of superconductive wires and bands - Google Patents
Process for the production of superconductive wires and bands Download PDFInfo
- Publication number
- US3271200A US3271200A US286151A US28615163A US3271200A US 3271200 A US3271200 A US 3271200A US 286151 A US286151 A US 286151A US 28615163 A US28615163 A US 28615163A US 3271200 A US3271200 A US 3271200A
- Authority
- US
- United States
- Prior art keywords
- bands
- wires
- phase
- niobium
- heat treatment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title claims description 9
- 238000004519 manufacturing process Methods 0.000 title description 5
- 229910045601 alloy Inorganic materials 0.000 claims description 13
- 239000000956 alloy Substances 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 11
- 238000005482 strain hardening Methods 0.000 claims description 9
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 6
- 229910000734 martensite Inorganic materials 0.000 claims description 6
- 229910052758 niobium Inorganic materials 0.000 claims description 6
- 239000010955 niobium Substances 0.000 claims description 6
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 6
- 239000010936 titanium Substances 0.000 claims description 6
- 229910052719 titanium Inorganic materials 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 4
- 230000000717 retained effect Effects 0.000 claims description 4
- 229910001257 Nb alloy Inorganic materials 0.000 claims description 3
- RJSRQTFBFAJJIL-UHFFFAOYSA-N niobium titanium Chemical compound [Ti].[Nb] RJSRQTFBFAJJIL-UHFFFAOYSA-N 0.000 claims description 3
- 238000005266 casting Methods 0.000 description 4
- 239000002887 superconductor Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- -1 Hake et al. Substances 0.000 description 1
- 229910001093 Zr alloy Inorganic materials 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- GFUGMBIZUXZOAF-UHFFFAOYSA-N niobium zirconium Chemical compound [Zr].[Nb] GFUGMBIZUXZOAF-UHFFFAOYSA-N 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C14/00—Alloys based on titanium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
- C22F1/18—High-melting or refractory metals or alloys based thereon
- C22F1/183—High-melting or refractory metals or alloys based thereon of titanium or alloys based thereon
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N60/00—Superconducting devices
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N60/00—Superconducting devices
- H10N60/01—Manufacture or treatment
- H10N60/0156—Manufacture or treatment of devices comprising Nb or an alloy of Nb with one or more of the elements of group IVB, e.g. titanium, zirconium or hafnium
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S420/00—Alloys or metallic compositions
- Y10S420/901—Superconductive
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S505/00—Superconductor technology: apparatus, material, process
- Y10S505/80—Material per se process of making same
- Y10S505/801—Composition
- Y10S505/805—Alloy or metallic
- Y10S505/806—Niobium base, Nb
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S505/00—Superconductor technology: apparatus, material, process
- Y10S505/80—Material per se process of making same
- Y10S505/812—Stock
- Y10S505/813—Wire, tape, or film
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S505/00—Superconductor technology: apparatus, material, process
- Y10S505/80—Material per se process of making same
- Y10S505/812—Stock
- Y10S505/814—Treated metal
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S505/00—Superconductor technology: apparatus, material, process
- Y10S505/80—Material per se process of making same
- Y10S505/815—Process of making per se
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S505/00—Superconductor technology: apparatus, material, process
- Y10S505/80—Material per se process of making same
- Y10S505/815—Process of making per se
- Y10S505/822—Shaping
Definitions
- the present invention relates to an improved process for the production of superconductive wires and bands and more particularly to the production of such superconductive wires and bands from titanium niobium alloys.
- wires and bands of so-called hard superconductors that is, such superconductors the maximum current density of which in the range of superconductivity is only little influenced by exterior magnetic fields even up to high field strengths, can be produced by cold working of niobium zirconium alloys.
- Such alloys however, have the disadvantage that they are difiicult to process to wires and bands.
- titaniumniobium alloys with 20-45% by weight of niobium which per se are already known as superconductor alloys can be processed to superconductive wires and bands in an especially advantageous manner.
- the starting alloys consisting of 20- 45% by weight of niobium and the remainder titanium are first cooled down from the ,8 region, that is, from a temperature above 700 C., preferably above 900 C., so rapidly that the 5 phase is retained along with the mar tensite (supersaturated a mixed crystals) which is formed but that no equilibrium or phase occurs.
- the quenching medium required to eifect such cooling depends upon the thickness of the alloy workpiece and with thin workpieces can be air whereas with thicker workpieces water may be required.
- the required rapid cooling for retention of the B phase can also be effected in the casting, for example, by casting a bar mm. thick ina water cooled copper mold under argon. Castings or hot worked bars or rods which are easily produced can be used as the starting materials for the production of the thus rapidly cooled alloys which are then cold worked to wires or hands to provide a degree of deformation of 60 to 99%, preferably between 90-99%, and these then given a heat treatment between 250 and 650 C.
- the heat treatment must be carried out in such a way that the lamellar structure produced by the cold working is retained and that as little as possible, if any, coarse grained or titanium is formed.
- wires and bands according to the invention exhibit high critical current 3,271,200 Patented Sept. 6, 1966 densities at 5 K., namely, over 100,000 A./cm. without having the superconductivity impaired.
- alloys are employed according to the inven tion which are composed of 30% to 40% by weight of niobium and the remainder titanium.
- the heat treatment carried out on the wires and bands produced therefrom is for 10-25 hours at temperatures between 350 and 600 C.
- the heat treatment need not necessarily be carried out only after all of the cold working has been completed as it is possible to follow the heat treatment by a slight cold working which may provide a degree of deformation of up to
- the following example will serve to illustrate the process according to the invention:
- the resulting wire stock had the following superconductive properties at 5 K.
- Method of producing superconductive wires and bands from titanium-niobium alloys composed of 20-45% by weight o-f niobium and the remainder titanium which comprises cooling down such an alloy from a temperature in the 5 phase region sufficiently rapidly that such [3 phase is retained and in addition a martensitic phase but no equilibrium or phase is produced, cold working such cooled alloy to wires and bands and subjecting such cold worked wires or bands to a heat treatment between 250 and 650 C. to cause the supersaturated B and martensitic phases therein to separate out.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEM53256A DE1188824B (de) | 1962-06-19 | 1962-06-19 | Verfahren zur Herstellung von supraleitenden Draehten und Baendern aus Titan-Niob-Legierungen |
Publications (1)
Publication Number | Publication Date |
---|---|
US3271200A true US3271200A (en) | 1966-09-06 |
Family
ID=7307658
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US286151A Expired - Lifetime US3271200A (en) | 1962-06-19 | 1963-06-07 | Process for the production of superconductive wires and bands |
Country Status (4)
Country | Link |
---|---|
US (1) | US3271200A (fr) |
BE (1) | BE633765A (fr) |
DE (1) | DE1188824B (fr) |
FR (1) | FR1360611A (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3547713A (en) * | 1966-04-22 | 1970-12-15 | Straumann Inst Ag | Methods of making structural materials having a low temperature coefficient of the modulus of elasticity |
US5418214A (en) * | 1992-07-17 | 1995-05-23 | Northwestern University | Cuprate-titanate superconductor and method for making |
-
0
- BE BE633765D patent/BE633765A/xx unknown
-
1962
- 1962-06-19 DE DEM53256A patent/DE1188824B/de active Pending
-
1963
- 1963-06-07 US US286151A patent/US3271200A/en not_active Expired - Lifetime
- 1963-06-17 FR FR938296A patent/FR1360611A/fr not_active Expired
Non-Patent Citations (1)
Title |
---|
None * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3547713A (en) * | 1966-04-22 | 1970-12-15 | Straumann Inst Ag | Methods of making structural materials having a low temperature coefficient of the modulus of elasticity |
US5418214A (en) * | 1992-07-17 | 1995-05-23 | Northwestern University | Cuprate-titanate superconductor and method for making |
Also Published As
Publication number | Publication date |
---|---|
BE633765A (fr) | |
DE1188824B (de) | 1965-03-11 |
FR1360611A (fr) | 1964-05-08 |
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