A kind of high-strength high-toughness aluminum alloy and preparation method thereof

A high-toughness, aluminum alloy technology, applied in metal rolling and other directions, can solve problems such as failure of aluminum alloy products, strength decline, etc., and achieve the effects of improving strength and toughness, inhibiting recrystallization, and increasing diffusion rate

Active Publication Date: 2020-12-29
黄山市龙跃铜业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

With the development of science and technology, the requirements for the strength, toughness and corrosion resistance of aluminum alloys are increasing day by day. The existing Al-Zn-Mg-Cu series aluminum alloys often make The decrease in strength makes aluminum alloy products fail during service, which limits their application; while maintaining the high strength of aluminum alloys, improving the toughness and corrosion resistance of materials is one of the important topics in the field of aluminum alloy research

Method used

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  • A kind of high-strength high-toughness aluminum alloy and preparation method thereof
  • A kind of high-strength high-toughness aluminum alloy and preparation method thereof

Examples

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Effect test

Embodiment 1

[0019] A high-strength and high-toughness aluminum alloy, its composition includes by weight percentage: Mg: 1.3%, Zn: 6.9%, Cu: 1.05%, Yb: 0.16%, Fe: 0.08%, Si: 0.11%, Zr: 0.04 %, Ti: 0.23%, Cr: 0.01%, Mn: 0.24%, B: 0.14%, Li: 0.21%, Ag: 0.28%, and the balance is Al.

[0020] The present invention also proposes a method for preparing the high-strength and high-toughness aluminum alloy, comprising the following steps:

[0021] S1. Weigh magnesium ingots, zinc ingots, aluminum-copper master alloys, Al-Yb master alloys, aluminum-iron master alloys, metal silicon, aluminum-zirconium master alloys, aluminum-titanium master alloys, aluminum-chromium master alloys, manganese ingots, aluminum Boron master alloys, aluminum-lithium master alloys, aluminum ingots and pure silver; metal silicon, aluminum ingots, magnesium ingots, zinc ingots and manganese ingots are added to the smelting furnace, melted at 770°C for 25 minutes, then the remaining raw materials are added, melted and refin...

Embodiment 2

[0024] A high-strength and high-toughness aluminum alloy, its composition includes by weight percentage: Mg: 1.5%, Zn: 7.1%, Cu: 2%, Sc: 0.01%, Er: 0.07%, Fe: 0.08%, Si: 0.15 %, Zr: 0.12%, Ti: 0.09%, Cr: 0.03%, Mn: 0.1%, B: 0.07%, Li: 0.27%, Ag: 0.3%, and the balance is Al.

[0025] The present invention also proposes a method for preparing the high-strength and high-toughness aluminum alloy, comprising the following steps:

[0026] S1. Weigh magnesium ingots, zinc ingots, aluminum-copper master alloys, Al-Sc master alloys, Al-Er master alloys, aluminum-iron master alloys, metal silicon, aluminum-zirconium master alloys, aluminum-titanium master alloys, and aluminum-chromium master alloys according to the ratio Alloy, manganese ingot, aluminum-boron master alloy, aluminum-lithium master alloy, aluminum ingot and pure silver; metal silicon, aluminum ingot, magnesium ingot, zinc ingot and manganese ingot are put into the melting furnace, melted at 750°C for 55min, and then added...

Embodiment 3

[0029] A high-strength and high-toughness aluminum alloy, its composition includes by weight percentage: Mg: 1.99%, Zn: 6.18%, Cu: 1.1%, RE: 0.07%, Fe: 0.15%, Si: 0.18%, Zr: 0.09 %, Ti: 0.01%, Cr: 0.02%, Mn: 0.12%, B: 0.07%, Li: 0.11%, Ag: 0.42%, and the balance is Al; wherein, RE is a mixture of Y, Ce, La, and The weight ratio of Y, Ce, and La is 1:3:3.

[0030] The present invention also proposes a method for preparing the high-strength and high-toughness aluminum alloy, comprising the following steps:

[0031] S1. Weigh magnesium ingots, zinc ingots, aluminum-copper master alloys, Al-RE master alloys, aluminum-iron master alloys, metal silicon, aluminum-zirconium master alloys, aluminum-titanium master alloys, aluminum-chromium master alloys, manganese ingots, aluminum Boron master alloys, aluminum-lithium master alloys, aluminum ingots and pure silver; metal silicon, aluminum ingots, magnesium ingots, zinc ingots and manganese ingots are added to the melting furnace, melted...

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Abstract

The invention discloses a high-strength and high-tenacity aluminum alloy and a preparing method thereof. The alloy comprises components including, by weight percent, 1.3%-2.06% of Mg, 6.18%-7.1% of Zn, 1.05%-2% of Cu, 0.07%-0.16% of RE, 0.08%-0.15% of Fe, 0.11%-0.23% of Si, 0.04%-0.12% of Zr, 0.01%-0.23% of Ti, 0.01%-0.03% of Cr, 0.1%-0.24% of Mn, 0.07%-0.14% of B, 0.11%-0.27% of Li, 0.28%-0.42% of Ag and the balance Al, wherein RE is one or more mixtures of Yb, Sc, Er, Y, Ce and La. The provided high-strength and high-tenacity aluminum alloy preparing method is simple in process, the obtainedaluminum alloy is high in strength, and tenacity and corrosion resistance are good.

Description

technical field [0001] The invention relates to the technical field of aluminum materials, in particular to a high-strength and high-toughness aluminum alloy and a preparation method thereof. Background technique [0002] Aluminum alloy has high specific strength, good corrosion resistance, easy forming, and good electrical and thermal conductivity. It has been widely used instead of steel materials. Al-Zn-Mg-Cu series aluminum alloys are heat-treatable aluminum alloys, which are one of the most important lightweight structural materials in the fields of aerospace, ships, bridges, pipelines, vehicles, etc., and have been widely used. With the development of science and technology, the requirements for the strength, toughness and corrosion resistance of aluminum alloys are increasing day by day. The existing Al-Zn-Mg-Cu series aluminum alloys often make The decrease in strength makes aluminum alloy products invalid during service, which limits their application; while mainta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/10C22C1/03C22F1/053B21B3/00
CPCB21B3/00B21B2003/001C22C1/026C22C1/03C22C21/10C22F1/002C22F1/053
Inventor 金义泉
Owner 黄山市龙跃铜业有限公司
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