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Preparation method of Mg-Li matrix Mg-Li-Cu-Ni-Y series bulk amorphous alloy

An amorphous alloy, magnesium-lithium-based technology, applied in the field of preparation of high-strength amorphous alloy materials, can solve the problems of magnesium or lithium burning loss, large deviation, poor performance, etc., to reduce burning loss, reduce critical cooling rate, The effect of excellent mechanical properties

Inactive Publication Date: 2010-11-10
HARBIN ENG UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the traditional amorphous preparation process, improper composition design and implementation measures lead to serious loss of magnesium or lithium, and at the same time, it is very easy to introduce impurity elements, which makes the composition of the prepared amorphous alloy deviate from the original design, the purity is low, and the performance is relatively good. Difference

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  • Preparation method of Mg-Li matrix Mg-Li-Cu-Ni-Y series bulk amorphous alloy
  • Preparation method of Mg-Li matrix Mg-Li-Cu-Ni-Y series bulk amorphous alloy
  • Preparation method of Mg-Li matrix Mg-Li-Cu-Ni-Y series bulk amorphous alloy

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Embodiment 1

[0018] Choose to prepare x=2, that is, the composition is Mg 65 Li 2 Cu 18 Ni 5 Y 10 The bulk amorphous alloy, the sample diameter is 2mm.

[0019] Step 1: Preparation of master alloy: High-purity magnesium block with a purity of 99.99%, lithium block with a purity of 99.9%, nickel block with a purity of 99.5%, high-purity copper ingot with a purity of 99.8%, high-purity copper ingot with a purity of 99.99% Yttrium block according to composition ratio Mg 65 Li 2 Cu 18 Ni 5 Y 10 Weigh the raw materials; first put the alloy raw materials Cu, Ni, Y into the quartz test tube, place it in the center of the induction coil to avoid contact with the coil, close the furnace door of the intermediate frequency induction melting furnace, and then evacuate to 10 -4 Pa, filled with 10 -2 The argon gas of Pa was repeated three times and the alloy was smelted under the protection of argon gas. In order to make the alloy composition uniform, the alloy was smelted repeatedly 3 to 5 ti...

Embodiment 2

[0025] Choose to prepare x=4, that is, the composition is Mg 65 Li 4 Cu 16 Ni 5 Y 10 The bulk amorphous alloy, the sample diameter is 2mm.

[0026] Step 1: Preparation of master alloy: High-purity magnesium block with a purity of 99.99%, lithium block with a purity of 99.9%, nickel block with a purity of 99.5%, high-purity copper ingot with a purity of 99.8%, high-purity copper ingot with a purity of 99.99% Yttrium block according to composition ratio Mg 65 Li 4 Cu 16 Ni 5 Y 10 Weigh the raw materials; first put the alloy raw materials Cu, Ni, Y into the quartz test tube, place it in the center of the induction coil to avoid contact with the coil, close the furnace door of the intermediate frequency induction melting furnace, and then evacuate to 10 -4 Pa, filled with 10 -2 The argon gas of Pa was repeated three times and the alloy was smelted under the protection of argon gas. In order to make the alloy composition uniform, the alloy was smelted repeatedly 3 to 5 ti...

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Abstract

The invention provides a preparation method of Mg-Li matrix Mg-Li-Cu-Ni-Y series bulk amorphous alloy. The method comprises the following steps: mixing high purity magnesium block, lithium block, nickel block, high purity copper ingot and high purity yttrium block according to a nominal formulation-Mg65LixCu20-xNi5Y10 (0<x<5at.%), wherein firstly smelting by using the vacuum induction melting method to obtain Cu-Ni-Y ternary alloy, secondly polishing the Cu-Ni-Y alloy, grinding the alloy to mix with magnesium block and lithium block and then using the same smelting method to prepare Mg-Li-Cu-Ni-Y quinary master alloy; and (2) after grinding the Mg-Li-Cu-Ni-Y quinary master alloy prepared by smelting, and performing vacuum rapid quenching on an ultrafast quenching device to prepare the high-strength Mg-Li matrix Mg-Li-Cu-Ni-Y series bulk amorphous alloy. The preparation method of the invention avoids large ignition loss of Mg and Li and impurity elements and increases the purity of the amorphous alloy, and the obtained Mg-Li matrix amorphous alloy has high strength, low density and good corrosion resistance.

Description

technical field [0001] The invention relates to a preparation method of a high-strength amorphous alloy material. Background technique [0002] In recent decades, people have conducted more systematic and in-depth research on magnesium-based amorphous alloys. It was found that the strength of magnesium-based amorphous alloys can reach 2 to 3 times that of ordinary crystalline alloys, the specific strength has been greatly improved, and the problem of corrosion resistance that was originally difficult to solve has also been improved. It is considered to be a new type of lightweight alloy with great potential. High specific strength structural material. As an ultra-light alloy, magnesium-lithium alloy has many of the same excellent properties and important application value as magnesium-based alloys, but there are few studies on its amorphous alloys. Therefore, research on magnesium-lithium-based amorphous alloys will surely become one of the important topics in the field of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C45/00C22C1/03C22F1/06
Inventor 高鹏刘光波薛柱张密林童仲秋
Owner HARBIN ENG UNIV
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