Preparation method of cubic-textured nickel-based alloy base tape for non-magnetic high-temperature superconducting coated conductors

A high-temperature superconducting and coating conductor technology is applied in the field of high-temperature superconducting coated conductor metal basebands to achieve the effect of improving mechanical properties and reducing magnetic properties

Inactive Publication Date: 2016-07-06
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The purpose of using powder metallurgy is to solve the problem of uniform alloying of high melting point alloying elements in the nickel matrix, but with the improvement of smelting technology, the problem of uniform distribution of alloying elements has been well solved

Method used

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  • Preparation method of cubic-textured nickel-based alloy base tape for non-magnetic high-temperature superconducting coated conductors
  • Preparation method of cubic-textured nickel-based alloy base tape for non-magnetic high-temperature superconducting coated conductors
  • Preparation method of cubic-textured nickel-based alloy base tape for non-magnetic high-temperature superconducting coated conductors

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Ni, Cr, and Mo with a purity of more than 99.95% are batched according to weight percentages of 90%, 7%, and 3%. After the ingredients are fully smelted in an electromagnetic induction vacuum melting furnace, an initial billet is obtained; the obtained billet is Homogenize at 1050°C for 20 hours to make the chemical composition of the alloy more uniform, and then hot forge the ingot into a forging with a size of 44′14′14mm; heat the forging to 1050°C with the furnace for 30 minutes and then perform hot rolling. The lower amount is about 10%, and finally a hot-rolled sheet with a thickness of 4.8mm is obtained. After the hot-rolled sheet is annealed and pickled at 1050°C, it is cold-rolled with a pass reduction of 3-10% and a total reduction of 98% to obtain an alloy base strip with a thickness of 100mm. The cold-rolled base strip was ultrasonically cleaned with acetone to remove oil, and then annealed in a vacuum environment. The annealing process was to increase the te...

Embodiment 2

[0034] The Ni, Cr and Mo with a purity of more than 99.95% are batched according to the weight percentage of 90%, 7% and 3%. After the ingredients are fully smelted in an electromagnetic induction vacuum melting furnace, the initial billet is obtained; the obtained initial billet Homogenize annealing at 1050°C for 20 hours to make the chemical composition of the alloy more uniform, and then hot forge the ingot into a forging with a size of 44×14×14mm; heat the forging to 1050°C with the furnace and keep it for 30 minutes before hot rolling. The reduction is about 10%, and finally a hot-rolled sheet with a thickness of 4.8mm is obtained. After the hot-rolled sheet is annealed and pickled at 1050°C, it is cold-rolled with a pass reduction of 3-10% and a total reduction of 98% to obtain an alloy base strip with a thickness of 100mm. The cold-rolled base tape was ultrasonically cleaned with acetone to remove oil, and then annealed in a vacuum environment. The annealing process was...

Embodiment 3

[0036] The Ni, Cr and Mo with a purity of more than 99.95% are batched according to the weight percentage of 85%, 10% and 5%. After the ingredients are fully smelted in an electromagnetic induction vacuum melting furnace, the initial billet is obtained; the obtained initial billet Homogenized annealing at 1050°C for 20 hours, the chemical composition of the alloy is more uniform, and then the ingot is hot forged into a forging of 41×19×12mm; the forging is heated to 1050°C with the furnace for 30 minutes and then hot-rolled, the reduction of each pass It is about 10%, and finally a hot-rolled sheet with a thickness of 4.5mm is obtained. After the hot-rolled sheet is annealed and pickled at 1050°C, it is cold-rolled with a pass reduction of 3-10% and a total reduction of 97% to obtain an alloy base strip with a thickness of 100mm. The cold-rolled base strip is ultrasonically cleaned with acetone to remove oil, and then annealed in a vacuum environment. The annealing process is ...

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Abstract

The invention relates to a non-magnetic, cube texture-concentrated nickel-based alloy substrate used for coated conductors, and a preparation method thereof, and belongs to the field of high-temperature superconducting coated conductor substrate. The non-magnetic cube-textured nickel-based alloy substrate comprises 85 to 90wt% of Ni, 7 to 10wt% of Cr, and 3 to 5wt% of Mo. According to the preparation method, pure Ni, pure Cr, and pure Mo with purities more than 99.95% are used as raw materials; a material is prepared based on the composition proportion, and is subjected to smelting in an electromagnetic induction vacuum melting furnace; obtained alloy billets are subjected to homogenization treatment and hot forging; obtained forge pieces are subjected to hot rolling with a pass reduction of 3 to 10% and a total reduction of 30 to 50%, are subjected to intermediate annealing and acid pickling treatment, and then are subjected to cold rolling with a pass reduction of 10% or less and a total reduction more than 96 to 98% so as to obtain an alloy substrate with a thickness of about 100mm; the cold rolled substrate is subjected to ultrasonic cleaning with acetone, and then is subjected to vacuum recrystallization annealing, wherein heating rate is controlled to be 5 to 15 DEG C / min, annealing temperature is controlled to be 950 to 1050 DEG C, and temperature is maintained for 120min in annealing processes.

Description

technical field [0001] The invention relates to a nickel-based alloy base tape for a high-temperature superconducting coated conductor with a non-magnetic and concentrated cubic texture and a preparation method thereof, belonging to the technical field of the high-temperature superconducting coated conductor metal base tape. Background technique [0002] Since its discovery, the second-generation high-temperature superconducting coated conductor YBa2Cu3O7-x (YBCO) has potential applications in many fields such as electric power, transportation, transportation, magnet technology, military, etc., especially in the field of strong electricity. It has broad application prospects. As the carrier of the superconducting coating, the metal substrate has excellent properties and is the basic guarantee for the preparation of high-performance coated conductors. [0003] At present, the preparation of high-temperature superconducting coated conductors is mainly based on two technologie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C19/05C22C1/02C22F1/10
Inventor 王均安刘二微黄宏川陈纪昌张植权
Owner SHANGHAI UNIV
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