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Zirconium-based tough nanocrystalline alloy material and preparation method thereof

A technology of nanocrystalline alloys and zirconium-based amorphous alloys, applied in nanotechnology, metal rolling, nanotechnology, etc., can solve the problems of restricting application range and prospects, low critical cooling rate, high amorphous forming ability, etc., and achieve Excellent thermal stability, improved toughness, excellent performance

Active Publication Date: 2021-03-19
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, the Zr base crystal material has very excellent properties. Since Zr-based amorphous alloys usually have a lower critical cooling rate and higher amorphous formation ability, researchers have found that Zr-based amorphous alloys can be used as precursors, through Annealing can obtain a relatively stable quasicrystal structure, but because quasicrystal materials are generally metastable, the difficulty of obtaining it is closely related to the alloy composition and preparation method, and materials with icosahedral quasicrystal structure are usually brittle at room temperature, so Greatly restrict the application scope and prospect of this kind of material

Method used

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  • Zirconium-based tough nanocrystalline alloy material and preparation method thereof
  • Zirconium-based tough nanocrystalline alloy material and preparation method thereof
  • Zirconium-based tough nanocrystalline alloy material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0054] A zirconium-based ductile nanocrystalline alloy Zr 65 Al 7.5 Ni 10 Cu 11.5 Au 6 The ultra-low temperature rolling preparation method is prepared according to the following steps:

[0055] Step 1, prepare raw materials according to the composition expression of the above zirconium-based alloy, convert atomic percentage into mass percentage to prepare raw materials, weigh the corresponding mass and mix for use. See Table 1 for raw material purity and manufacturer.

[0056] Step 2, place the raw materials prepared in step 1 in a vacuum arc melting furnace, and evacuate to 3×10 -3When Pa, filled with argon gas, under the protection of argon gas, the raw material was heated to complete melting and uniform after 6 times of smelting, and then cooled to room temperature of 25 °C to make a master alloy ingot.

[0057] Step 3, break the master alloy ingot into 5 pieces, try to ensure that the size is uniform, each piece is 1.5g, and put the small pieces of alloy into alcohol...

Embodiment 2

[0068] A zirconium-based ductile nanocrystalline alloy Zr 65 Al 7.5 Ni 10 Cu 7.5 Au 10 The ultra-low temperature rolling preparation method is prepared according to the following steps:

[0069] Step 1, prepare raw materials according to the composition expression of the above zirconium-based alloy, convert atomic percentage into mass percentage to prepare raw materials, weigh the corresponding mass and mix for use. See Table 1 for raw material purity and manufacturer.

[0070] Step 2, place the raw materials prepared in step 1 in a vacuum arc melting furnace, and evacuate to 3×10 -3 When Pa, filled with argon gas, under the protection of argon gas, the raw material was heated to complete melting and uniform after 6 times of smelting, and then cooled to room temperature of 25 °C to make a master alloy ingot.

[0071] Step 3, break the master alloy ingot into 5 pieces, try to ensure that the size is uniform, each piece is 2g, and put the small pieces of alloy into alcohol ...

Embodiment 3

[0082] A zirconium-based ductile nanocrystalline alloy Zr 65 Al 7.5 Ni 10 Cu 2.5 Au 15 The ultra-low temperature rolling preparation method is prepared according to the following steps:

[0083] Step 1, prepare raw materials according to the composition expression of the above zirconium-based alloy, convert atomic percentage into mass percentage to prepare raw materials, weigh the corresponding mass and mix for use. See Table 1 for raw material purity and manufacturer.

[0084] Step 2, place the raw materials prepared in step 1 in a vacuum arc melting furnace, and evacuate to 3×10 -3 When Pa, filled with argon gas, under the protection of argon gas, the raw material was heated to complete melting and uniform after 6 times of smelting, and then cooled to room temperature of 25 °C to make a master alloy ingot.

[0085] Step 3, break the master alloy ingot into 4 pieces, try to ensure that the size is uniform, each piece is 1.5g, and put the small pieces of alloy into alcoho...

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Abstract

The invention discloses a zirconium-based tough nanocrystalline alloy material and a preparation method thereof. The zirconium-based tough nanocrystalline alloy material comprises following componentsas shown in the following expression of Zr65Al7.5Ni10CuaAub, wherein a and b respectively represent atomic percentages of Cu and Au elements, and a and b satisfy the following conditions: 2.5<=a <=11.5, 6<=b<=15, and a+b =17.5. According to the method, a zirconium-based amorphous alloy strip is rolled at the temperature of minus 200 to minus100 DEG C by an ultralow-temperature rolling method, sothat the alloy strip with a nano quasi-crystal / amorphous composite structure is obtained. The zirconium-based tough nanocrystalline alloy material obtained through the ultralow-temperature rolling method has good bending toughness and room-temperature stability, the defect that in the prior art, a quasicrystal composite structure material is usually brittle at the room temperature is overcome, andthe zirconium-based tough nanocrystalline alloy material can be used in the field of nanometer quasicrystal / amorphous composite structure materials with certain requirements for toughness and stability.

Description

technical field [0001] The invention relates to an ultra-low temperature rolling preparation method of a zirconium-based tough nanocrystalline alloy, which belongs to the field of zirconium-based amorphous structure materials. Background technique [0002] Quasicrystal is a kind of crystal with rotational symmetry and no translational periodicity. It has the characteristics of long-range quasi-periodic order and is a solid between crystal and amorphous. [1] . The crystal structure of quasicrystals is different from conventional crystals and amorphous crystals. It does not have the ordered arrangement of lattice periodicity, but exhibits long-range order, that is, it will be expressed in the form of an irrational number sequence in a certain direction, with self-similarity. Sexual translation quasi-periodic. Due to the particularity of its structure, materials with quasi-crystal structure often have room temperature brittleness, non-stickiness, high electrical resistivity, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C45/10C22C1/00C22C1/03B22D11/06B22D11/18C22F1/18C22C16/00B82Y30/00B82Y40/00G01N23/207G01N23/04G01N23/20G01N25/20G01N3/40G01N23/2251B21B3/00B21B37/74
CPCC22C45/10C22C1/03B22D11/0611B22D11/18C22F1/186C22C16/00B82Y30/00B82Y40/00G01N23/207G01N23/04G01N23/20G01N25/20G01N3/40G01N23/2251B21B3/00B21B37/74C22C2200/02C22C2200/04C22C2200/06C22C1/11
Inventor 朱胜利金颖井上明久崔振铎杨贤金
Owner TIANJIN UNIV
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