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Method for preparing rare-earth yttrium containing super-high-strength wrought aluminium alloy

A deformed aluminum alloy, ultra-high-strength technology, which is applied in the field of ultra-high-strength aluminum alloy structural materials and deformed aluminum alloy material preparation, can solve the problems of high cost, achieve improved thermal strength, increase the number of eutectics, and refine recrystallized grains Effect

Inactive Publication Date: 2013-09-18
TIANJIN LIZHONG ALLOY GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

New materials that have emerged include intermetallic compounds, metal matrix composites, new Ni alloys, Ti alloys, etc., but the cost is relatively high

Method used

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  • Method for preparing rare-earth yttrium containing super-high-strength wrought aluminium alloy

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Effect test

Embodiment 1

[0034] A method for preparing an ultra-high-strength deformed aluminum alloy containing rare earth yttrium, the steps are as follows:

[0035] ⑴The total input material is 50Kg, weighing 4kg of metal zinc, 1.1kg of metal copper, 2.3kg of aluminum-magnesium master alloy (AlMg50), 2.3kg of aluminum-yttrium master alloy (AlY5), 0.8 of aluminum-zirconium master alloy (AlZr10), and 39.5 kg of refined aluminum ingot kg;

[0036] (2) Weigh 0.15kg of HGJ-2 type sodium-free refining slag remover produced by Shanghai Hongguang Metal Flux Factory, and weigh 0.12kg of XH-2 type magnesium alloy covering agent produced by Xuzhou Xuhui Aluminum Industry Co., Ltd.;

[0037] (3) Put metal zinc, metal copper, aluminum-magnesium master alloy, aluminum-yttrium master alloy, aluminum-zirconium master alloy, refined aluminum ingot, refining slag remover and magnesium alloy covering agent in steps ⑴ and step ⑵ respectively into the temperature of 240 ℃ Dry in a constant temperature preheating dryin...

Embodiment 2

[0048] A method for preparing an ultra-high-strength deformed aluminum alloy containing rare earth yttrium, the steps are as follows:

[0049] ⑴Total feed is 50kg, weighing 4.4kg of metal zinc, 1.25kg of metal copper, 2.8kg of aluminum-magnesium master alloy (AlMg50), 2.6kg of aluminum-yttrium master alloy (AlY5), 0.75kg of aluminum-zirconium master alloy (AlZr10), refined aluminum Ingot 38.2kg;

[0050] (2) Weigh 0.17kg of HGJ-2 type sodium-free refining slag remover produced by Shanghai Hongguang Metal Flux Factory, and weigh 0.14kg of XH-2 type magnesium alloy covering agent produced by Xuzhou Xuhui Aluminum Industry Co., Ltd.;

[0051] (3) Put metal zinc, metal copper, aluminum-magnesium master alloy, aluminum-yttrium master alloy, aluminum-zirconium master alloy, refined aluminum ingot, refining slag cleaning agent and magnesium alloy covering agent in a constant temperature of 280°C in step 1 and step 2 Dry in a preheated drying oven for 2 hours;

[0052] (4) Put the r...

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Abstract

The invention discloses a method for preparing a rare-earth yttrium containing a super-high-strength wrought aluminium alloy, which comprises the followings steps of: (1) satisfying the requirements that the yttrium containing super-high-strength wrought aluminium alloy comprises the following components in percentage by mass: 7.5-9.0% of zinc, 2.0-2.6% of Cu, 2.0-3.0% of Mg, 0.2-0.3% of Y, 0.1-0.2% of Zr, less than or equal to 0.05% of Fe, and less than or equal to 0.05% of Si; respectively weighting metal zinc, metal copper, an aluminum-magnesium intermediate alloy, an aluminium-yttrium intermediate alloy, an aluminum-zirconium intermediate alloy and a refined aluminium ingot according to the proportion; and carrying out melting step by step. According to the invention, a rare-earth element yttrium is added into an Al-Zn-Mg-Cu alloy, thereby improving the heat resistance of the alloy through process control, improving the heat resistance of Al-Zn-Mg-Cu high-strength aluminum alloys, and satisfying the requirements of currently rapidly developed aerospace and special mechanical equipment.

Description

technical field [0001] The invention belongs to the field of preparation technology of deformed aluminum alloy materials and grain refinement technology, and relates to an ultra-high-strength aluminum alloy structural material used for manufacturing special mechanical equipment such as aerospace, especially a kind of ultra-high-strength deformed aluminum containing rare earth yttrium alloy method. Background technique [0002] With the development of the aerospace industry, the new generation of aircraft has put forward higher requirements for materials, such as light weight, high strength, high toughness and corrosion resistance. In order to meet this demand, many countries in the world are conducting research and development of new high-strength and high-toughness aluminum alloys. Among them, the Al-Zn-Mg-Cu high-strength aluminum alloy is the highest strength aluminum alloy material that can be obtained so far. They not only have a tensile strength of more than 600MPa, b...

Claims

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Application Information

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IPC IPC(8): C22C21/10C22C1/03
Inventor 王如芬翟盼盼冯宝元刘中王小青代晓晨
Owner TIANJIN LIZHONG ALLOY GROUP
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