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High weld strength Al-Mg-Er-Zr alloy and preparation method of panel made of same

An al-mg-er-zr, welding strength technology, applied in the field of high welding strength Al-Mg-Er-Zr alloy and its plate preparation, can solve the problems of difficult introduction of alloy smelting, expensive, increased production cost of alloy, etc. Achieve the effect of low production cost, cheap price and simple alloy melting process

Inactive Publication Date: 2013-04-24
SNTO TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the above method of strengthening the welding strength of the alloy by adding Sc and Zr elements has the following disadvantages: (1) Sc is a very expensive metal, which increases the actual production cost of the alloy; (2) Li is a very light and volatile element, and the alloy Introduction during smelting is more difficult

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: The high welding strength Al-Mg-Er-Zr alloy of this embodiment, its alloy composition and its mass percentage are: Mg2.5%, Si0.3%, Mn0.5%, Ti0.1%, Cr0 .2%, Fe0.1%, Cu0.02%, Ti0.1%, Er0.25%, Zr0.5%, and the rest is Al content.

[0022] The preparation method of the above-mentioned high welding strength Al-Mg-Er-Zr alloy plate is as follows:

[0023] (1) Raw material preparation: pure aluminum, pure magnesium, pure iron, pure copper, Al-Si master alloy, Al-Mn master alloy, Al-Cr master alloy, Al-Zr master alloy, Al-Er master alloy and Al-Ti master alloy is used as a raw material, and the ratio is carried out according to the above-mentioned alloy composition and its mass percentage;

[0024] (2) Alloy smelting: The prepared alloy raw materials are heated, smelted and liquefied under the protection of covering agent or inert gas, and the melting temperature is 740~760℃;

[0025] (3) Casting and rolling of aluminum alloy sheets: Stir the liquefied alloy raw...

Embodiment 2

[0031] Embodiment 2: Compared with Embodiment 1, the difference of this embodiment is: the alloy composition and its mass percentage of this embodiment are: Mg4.5%, Si0.35%, Mn0.68%, Ti0.05%, Cr0.15%, Fe0.02%, Cu0.05%, Ti0.05%, Er0.7%, Zr0.72%, and the rest is Al content.

[0032] The obtained high welding strength experimental results of the 4mm thick aluminum alloy plate are: the tensile strength of the base metal is 348Mpa, the tensile strength of the welded joint is 317Mpa, and the welding strength is 91.1% of the base metal.

[0033] The above are only the preferred embodiments provided by the present invention. In a word, the high welding strength Al-Mg-Er-Zr alloy plate prepared by the method of the present invention significantly improves the welding strength, and the production process is simple, the price is cheap, and the alloy can be smelted The process is easier.

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Abstract

The invention provides a high weld strength Al-Mg-Er-Zr alloy, which comprises the following alloy components in percentage by mass: 2.0-5.0% of Mg, 0.2-0.8% of Er, 0.2-0.6% of Zr, less than 0.4% of Si, 0.05-0.8% of Mn, 0.05-0.2% of Ti, less than 0.1% of Zn, less than 0.4% of Fe, 0.15-0.35% of Cr, less than 0.1% of Cu, less than 0.15% of total amount of other alloy components and the balance of Al. The invention further provides a method for preparing the panel made of the alloy. The Al-Mg-Er-Zr alloy provided by the invention is easy to weld and high in weld strength, low in production cost and cheap in cost and does not contain alloy components which are volatile and difficult to smelt, so that an alloy smelting process is simple, and the preparation method of the panel made of the alloy is also simple in technology.

Description

technical field [0001] The invention belongs to the technical field of metal alloys, and in particular relates to a high welding strength Al-Mg-Er-Zr alloy and a method for preparing a plate thereof. Background technique [0002] Al-Mg series aluminum alloy has good corrosion resistance, electrical conductivity, thermal conductivity, and can maintain a bright surface for a long time, has high plasticity and strength, and high welding strength. It is mostly used to manufacture structural parts, containers, pipes, parts, daily necessities, rivets and decorations, etc. It is currently the most widely used aluminum alloy in aluminum welding structures, and it is also used in aviation, aerospace, petroleum, chemical, electronics, automobile and machinery manufacturing. be widely used. Among them, Al-Mg aluminum alloys such as 5052, 5083, and 5A02 are often used as car body materials, and their welding methods generally use inert gas shielded welding techniques, such as Mig and T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/06C22C21/08C22C1/03C22F1/047
Inventor 不公告发明人
Owner SNTO TECH GRP
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