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Aluminium-silicon-copper-magnesium series deforming alloy and its preparing method

A technology of deforming aluminum alloy and aluminum silicon copper, which is applied in the field of metal materials, can solve problems such as high temperature performance, poor cutting performance and corrosion resistance, failure to meet high performance index requirements, alloy use restrictions, etc., to reduce harmful effects and improve Room temperature and high temperature performance, effect of alloy cost reduction

Inactive Publication Date: 2008-12-03
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the development of my country's transportation industry, the requirements for the performance of alloy materials are getting higher and higher. At present, my country's existing aluminum-silicon-copper-magnesium-based deformed aluminum alloys 4A11, 4032 and Japan's A4032 and other aluminum-silicon-copper-magnesium-based deformed aluminum alloys, High temperature performance, cutting performance and corrosion resistance are relatively poor, which is far from meeting the high performance index requirements of domestic and foreign merchants for products, and the above-mentioned alloy contains expensive and scarce element nickel, which limits the use of this type of alloy

Method used

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  • Aluminium-silicon-copper-magnesium series deforming alloy and its preparing method
  • Aluminium-silicon-copper-magnesium series deforming alloy and its preparing method
  • Aluminium-silicon-copper-magnesium series deforming alloy and its preparing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Prepare 1000Kg of aluminum-silicon-copper-magnesium deformed aluminum alloy containing silicon: 10.0%; copper: 3.5%; magnesium: 0.5%; the balance is aluminum (the composition ratios are all weight percentages, the same below), and the preparation method is as follows:

[0028] (1). According to the weight percentage of the aluminum-silicon-copper-magnesium series deformed aluminum alloy components, weigh the raw materials aluminum, silicon, copper and magnesium with a purity greater than 99.7%, and set them aside;

[0029] For the preparation of the above raw materials, refer to Volume 3 of "Casting Handbook", Casting Non-ferrous Alloys, 2nd Edition, Machinery Industry Press, 2001.10, P187-188, and experience to determine the burning loss of alloying elements, aluminum: 1.5%, silicon: 1% , Magnesium: 20%.

[0030] Addition calculation formula: X = M × A C × ...

Embodiment 2

[0059] Prepare 1000 Kg of aluminum-silicon-copper-magnesium-based deformed aluminum alloy containing silicon: 11.0%, copper: 3.0%, magnesium: 0.4%, and the balance is aluminum.

[0060] Take the same process steps as in Example 1, wherein the calculated amounts of each raw material added in step (1) are: aluminum ingot 871.65Kg, silicon block 112.23Kg, pure copper 30.02Kg, magnesium block 5.00Kg.

[0061] After testing, the composition of the obtained alloy is: silicon: 11.0%; copper: 3.0%; magnesium: 0.4%; the balance is aluminum. The tensile strength of the alloy in the as-cast state is 258MPa, the elongation after fracture is 8.6%, and the hardness is 112HB; after heat treatment, the tensile strength can reach 394MPa, the elongation after fracture can reach 6.3%, and the hardness is 136-141HB.

Embodiment 3

[0063] Prepare 1000Kg of aluminum-silicon-copper-magnesium deformed aluminum alloy containing silicon: 12.0%, copper: 4.0%, magnesium: 0.6%, and the balance is aluminum.

[0064] Take the same process steps as in Example 1, wherein the amount of each raw material added in step (1) is: aluminum ingot 849.25Kg, silicon block 122.44Kg, pure copper 40.02Kg, magnesium block 6.11Kg.

[0065] After testing, the obtained alloy composition is: silicon: 12.0%; copper: 4.0%; magnesium: 0.6%; the balance is aluminum. The tensile strength of the alloy in the as-cast state is 263MPa, and the elongation after fracture is 8.4%. The hardness is 115HB; the tensile strength after heat treatment can reach 400MPa, the elongation after breaking can reach 4.9%, and the hardness is 136-141HB.

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Abstract

The invention discloses an Al-Si-Cu-Mg series distortion aluminum alloy and the manufacturing method. The alloy is made up from 9.0-12.0wt% Si, 3.0-4.0wt% Cu, 0.3-0.6wt% Mg, <0.30% Fe, <0.20% Zn, and other impurity <=0.15wt%, and the rest is Al. The method includes the following steps: smelting and refining the raw materials in reflecting smelter, after processing the allow liquation by Al-Sr intermediate alloy, gaining cast rod through hemicontinuous casting, extruding the cast rod and after forging and T6 thermal treatment to gain the product. The tensile strength of the alloy is over 397MPa, and broken tensile stretch is 6%, and rigidity is 136-141HB. It is mainly used to make wheel for vehicle and motorcycle, piston, bearing, bidirectional sloping cam plate, etc.

Description

technical field [0001] The invention belongs to the field of metal materials, and in particular relates to an aluminum-silicon-copper-magnesium series deformed aluminum alloy with high strength, good toughness and excellent wear resistance and a preparation method thereof. Background technique [0002] With the development of my country's transportation industry, the requirements for the performance of alloy materials are getting higher and higher. At present, my country's existing aluminum-silicon-copper-magnesium-based deformed aluminum alloys 4A11, 4032 and Japan's A4032 and other aluminum-silicon-copper-magnesium-based deformed aluminum alloys, The high-temperature performance, cutting performance and corrosion resistance are relatively poor, which is far from meeting the high-performance index requirements of domestic and foreign merchants for products. Moreover, the above-mentioned alloy contains expensive and scarce element nickel, which limits the use of this type of a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/02C22C1/03C22C1/06C22F1/043B21C23/00
Inventor 边秀房李贞宽韩娜王才东
Owner SHANDONG UNIV
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