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High-performance aluminum alloy and preparation method thereof

An aluminum alloy, high-performance technology, applied in the field of aluminum alloy materials, can solve the problems of long time required for transfer, long solution time, etc.

Active Publication Date: 2019-05-28
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Combined with hot stamping forming technology, there has always been a problem of long solid solution time and long time required for transfer after solid solution. Optimizing the chemical composition of aluminum alloy materials and improving the heat treatment process, the two are combined to specialize for hot stamping forming. It is very meaningful to provide an efficient and fast aluminum alloy with multiple excellent properties

Method used

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  • High-performance aluminum alloy and preparation method thereof
  • High-performance aluminum alloy and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0036] Al made of 56% 7075 aluminum ingots and 44% waste aluminum products, according to the mass percentage content of each alloy composition: 11.5% Zn, 1.8% Mg, 2.0% Cu, 0.15% Ce, 0.11% W, 0.08% Zr, 0.14 %Cr, 0.05%Mn, 0.02%Ti, 0.01%Fe, 0.03%Si prepared two groups of raw materials, and then divided them into two groups of G1 and G2 for comparison. The preparation method of G1 is prepared according to the steps of processing waste aluminum products-melting-spray forming-homogenization treatment-multi-pass rolling deformation-solution treatment-hot stamping treatment-aging treatment, that is, G1 The specific steps are:

[0037] S1: Clean the waste aluminum products with an aluminum material cleaning agent, and then dry them to obtain the above-mentioned waste aluminum products with a weight of 44%, and then carry out smelting, spray forming, homogenization treatment, and multi-pass rolling deformation. An aluminum alloy plate is obtained.

[0038] S2: Solution treatment: The ...

Embodiment 2

[0046]Al made of 56% 7075 aluminum ingots and 44% waste aluminum products, according to the mass percentage content of each alloy composition: 12.1% Zn, 1.8% Mg, 1.8% Cu, 0.19% Ce, 0.13% W, 0.15% Zr, 0.21 %Cr, 0.23%Mn, 0.04%Ti, 0.01%Fe, 0.03%Si prepared two groups of raw materials, and then divided them into two groups of G3 and G4 for comparison. The preparation method of G3 group is prepared according to the steps of processing waste aluminum products--smelting--spray forming--homogenization treatment--multi-pass rolling deformation--solution treatment--hot stamping treatment--aging treatment, etc., namely The specific steps of G3 are:

[0047] S1: Clean the waste aluminum products with an aluminum material cleaning agent, and then dry them to obtain the above-mentioned waste aluminum products with a weight of 44%, and then carry out smelting, spray forming, homogenization treatment, and multi-pass rolling deformation. An aluminum alloy plate is obtained.

[0048] S2: Solu...

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Abstract

The invention provides a high-performance aluminum alloy and a preparation method thereof. The high-performance aluminum alloy comprises the following components in percentage by weight: 11.2%-13.6% of Zn, 1.2%-1.8% of Mg, 0.2%-2.6% of Cu, 0.08%-0.25% of Zr, 0.04%-0.36% of Cr, 0.05%-0.3% of Mn, 0.02%-0.06% of Ti, 0%-0.15% of Fe, 0%-0.10% of Si, 0.05%-0.2% of W, 0.15%-2.0% of Ce and the balance Aland other inevitable impurity elements, wherein the percentage by mass of Zn and Mg is 6.5-11. According to the high-performance aluminum alloy, an efficient and rapid aluminum alloy integrating highstrength, high hardness, high-temperature resistance and corrosion resistance is especially provided for a hot-stamping forming technology by adding an appropriate amount of micro-alloy element W andrare-earth element Ce to an aluminum alloy matrix, increasing the mass ratio of Zn / Mg, and reducing the content of Cu; and the high-performance aluminum alloy has tensile strength of 720-816MPa, elongation after fracture of greater than 11%, and HBW value of 180-210.

Description

technical field [0001] The invention relates to the field of aluminum alloy materials, in particular to a high-performance aluminum alloy and a preparation method thereof. Background technique [0002] For a long time, under the drive of scientific research, commerce and military affairs, 7××× series aluminum alloys have continuously improved the chemical composition of aluminum alloy materials by optimizing the chemical composition of aluminum alloy materials, combined with effective heat treatment and other preparation methods to continuously improve the 7××× The comprehensive performance of aluminum alloy. For 7075, a series of heat treatment methods of T6-T73-T76 have been improved, so that it can meet the stress corrosion resistance while sacrificing only a small amount of strength. Later, with the further increase of Zn content, 7055-T77 appeared, which improved its corrosion performance without sacrificing strength, and had high fracture toughness and fatigue crack g...

Claims

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Application Information

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IPC IPC(8): C22C21/10C22C1/03C22F1/053C21D9/00B21D22/02
Inventor 华林赵满胡志力赵宁孙倩
Owner WUHAN UNIV OF TECH
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