Magnesium-base massive non-crystalline material and preparing method thereof

An amorphous material and bulk technology, which is applied in the field of magnesium-based bulk amorphous material and its preparation, amorphous material and its preparation field, and can solve the problem that the corrosion resistance of magnesium-based amorphous material decreases, and the mechanical properties of magnesium-based amorphous material are reduced. performance degradation and other problems, to achieve the effect of improving corrosion resistance

Inactive Publication Date: 2007-08-15
SHANGHAI JIAO TONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Find through literature retrieval to prior art, Men H etc. have published " Fabrication of ternaryMg-Cu-Gd bulk Metallic glass with high glass-forming ability under airatmosphere" ("Preparation of Mg-Cu-Gd ternary bulk metallic glass with high amorphous forming ability under the atmosphere") proposed the use of ordinary copper mold spray casting method under the atmosphere A round rod of amorphous alloy with a diameter of 8mm was prepared, but the amorphous alloy would undergo room temperature embrittlement due to structural relaxation at room temperature, which would significantly reduce the mechanical properties of the magnesium-based amorphous material; on the other hand, Although the Cu element contained in magnesium-based bulk amorphous materials is an essential alloying element for the formation of magnesium-based amorphous materials, the corrosion resistance of magnesium-based amorphous materials is greatly reduced due to the existence of Cu elements.

Method used

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  • Magnesium-base massive non-crystalline material and preparing method thereof
  • Magnesium-base massive non-crystalline material and preparing method thereof
  • Magnesium-base massive non-crystalline material and preparing method thereof

Examples

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Effect test

Embodiment 1

[0021] A magnesium-based bulk amorphous material contains components and their weight percentages: 42.4% magnesium, 7.4% copper, 13.7% nickel, and 36.5% gadolinium. The specific preparation method is as follows:

[0022] (1) Metal gadolinium is repeatedly smelted and purified four times in an electric arc furnace in an argon atmosphere adsorbed by titanium to remove impurities contained in rare earth metals to obtain metal gadolinium with a purity of ≥99.95%;

[0023] (2) above-mentioned metal gadolinium, metal copper, metal nickel are batched by above-mentioned percentage by weight, then in the electric arc furnace with the argon atmosphere that the titanium of magnetic stirring device is adsorbed, repeatedly smelt four times until the alloy melts evenly, after cooling, obtain relatively low The nickel-copper-gadolinium ternary alloy casting ingot of melting point, then this alloy casting ingot is broken;

[0024] (3) Vacuum the high-frequency induction vacuum furnace (vacuum...

Embodiment 2

[0028] A magnesium-based bulk amorphous material contains components and their weight percentages: 37.6% magnesium, 21.1% copper, 6.5% nickel, and 34.8% gadolinium. The specific preparation method is as follows:

[0029] (1) Metal gadolinium is repeatedly smelted and purified four times in an electric arc furnace in an argon atmosphere adsorbed by titanium to remove impurities contained in rare earth metals to obtain high-purity metal gadolinium with a purity of ≥99.95%;

[0030] (2) High-purity metal gadolinium, metal copper, and metal nickel are batched according to the above weight percentages, and then repeatedly smelted four times in an electric arc furnace with an argon atmosphere adsorbed by titanium with a magnetic stirring device until the alloy melts evenly, and after cooling, a relative Nickel-copper-gadolinium ternary alloy ingot with low melting point, and then the alloy ingot is broken;

[0031] (3) Vacuum the high-frequency induction vacuum furnace (vacuum degre...

Embodiment 3

[0035] A magnesium-based bulk amorphous material contains components and their weight percentages: 33.5% magnesium, 27.0% copper, 6.2% nickel, and 33.3% gadolinium. The specific preparation method is as follows:

[0036] (1) Metal gadolinium is repeatedly smelted and purified four times in an electric arc furnace in an argon atmosphere adsorbed by titanium to remove impurities contained in rare earth metals to obtain high-purity metal gadolinium with a purity of ≥99.95%;

[0037](2) High-purity metal gadolinium, metal copper, and metal nickel are batched according to the above weight percentages, and then repeatedly smelted four times in an electric arc furnace with an argon atmosphere adsorbed by titanium with a magnetic stirring device until the alloy melts evenly, and after cooling, a relative Nickel-copper-gadolinium ternary alloy ingot with low melting point, and then the alloy ingot is broken;

[0038] (3) Vacuum the high-frequency induction vacuum furnace (vacuum degree...

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Abstract

The invention discloses a preparing method of magnesium-base big block non-crystalline material in metallic material technical domain, which comprises the following steps: supplying 33.5-42.4% magnesium, 7.4-27.0% copper, 6.2-13.7% nickel and 33.3-36.5% gadolinium; melting metal gadolinium repeatedly; purifying; allocating metallic copper, gadolinium and nickel with agreed mass percent; melting until the alloy melts evenly; generating nickel-copper-gadolinium alloy cast ingot; bruising; evacuating with Efco-Northrup vacuum furnace; aerating argon gas; melting the bruising alloy cast ingot with magnesium block; melting evenly; getting mother alloy ingot; bruising; adopting eddy-current heating; remelting; getting the product through after-treatment. The compressed fracture dynamic property of this product can reach 900MPa.

Description

technical field [0001] The invention relates to an amorphous material and a preparation method thereof, in particular to a magnesium-based bulk amorphous material and a preparation method thereof. It belongs to the technical field of metal materials. Background technique [0002] Amorphous alloys have a unique short-range order and long-range disorder structure, and have the characteristics of general metals and glasses, so they have unique physical, chemical and mechanical properties. Because of its large size, bulk amorphous alloys can bring out many excellent properties of amorphous alloys, and it has become a hot research field in the international material field. Magnesium-based bulk amorphous has great industrial application value because of its low density, ultra-high specific strength, high amorphous forming ability, and the magnesium-based amorphous component is cheap and does not contain precious metals. However, amorphous alloys do not have obvious plasticity af...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C45/00C22C1/02
Inventor 袁广银丁文江
Owner SHANGHAI JIAO TONG UNIV
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