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Rare earth-containing aluminium alloy and preparation method thereof

A technology of aluminum alloy and aluminum alloy melt, which is applied in the field of rare earth-containing aluminum alloy and its preparation, can solve the problems of poor corrosion resistance, tensile strength, low elongation, etc., and achieve improved casting performance, grain refinement, The effect of increasing the tensile strength

Inactive Publication Date: 2018-06-12
CHANGSHA WUDAO IND DESIGN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The aluminum alloy prepared by this invention has the characteristics of good thermal deformation and machinability, but has the problems of low tensile strength, low elongation and poor corrosion resistance

Method used

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  • Rare earth-containing aluminium alloy and preparation method thereof

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preparation example Construction

[0030] The preparation method of the aluminum alloy containing rare earth comprises the following steps:

[0031] S1: Add aluminum ingots to the electromagnetic induction furnace, increase the temperature to 850-900°C to melt them, add silicon, manganese, copper, and lanthanum powders wrapped in aluminum foil to melt, and stir the alloy melt. After stirring for 12-14min, perform degassing treatment, stand still, and then perform ultrasonic treatment to obtain an aluminum-silicon-manganese-copper-lanthanum alloy intermediate. The temperature of the ultrasonic treatment is 780-800°C, and the ultrasonic power is 22-25KW. The processing time is 26-32min; adopt the same method to prepare the aluminum-titanium-carbon-cerium alloy intermediate; the aluminum-silicon-manganese-copper-lanthanum alloy intermediate and the aluminum-titanium-carbon-cerium alloy intermediate by weight Making a grain refiner, the size of the grain refiner is below 15 μm;

[0032] S2: Throwing titanium, zinc...

Embodiment 1

[0039] An aluminum alloy containing rare earth, including the following raw materials in mass percentage: 1.3% titanium, 0.03% zinc, 0.6% iron, 0.12% silicon, 0.2% manganese, 1.2% copper, 0.5% carbon, 0.06% chromium, and 1.31% boron , 0.12% magnesium, 0.4% molybdenum, 1.2% tungsten, 0.67% vanadium, 4.5% rare earth elements, 1% refining agent, 1.2% sodium pentafluorophenolate, 4.7% grain refiner, and the rest is aluminum;

[0040] The rare earth elements are in parts by weight, including the following raw materials: 1.3 parts of lanthanum, 1.1 parts of cerium, 0.7 parts of praseodymium, 0.2 parts of neodymium, 0.1 parts of samarium, 0.4 parts of dysprosium, 0.5 parts of holmium, 0.1 parts of ytterbium, and 0.2 parts of yttrium;

[0041] The refining agent includes the following raw materials in parts by weight: 15 parts of sodium chloride, 13 parts of sodium fluoride, 6 parts of graphite, and 5 parts of calcium fluoride;

[0042] The grain refiner includes the following raw mat...

Embodiment 2

[0051] An aluminum alloy containing rare earth, including the following raw materials in mass percentage: 0.9% titanium, 0.1% zinc, 0.5% iron, 0.08% silicon, 0.15% manganese, 1.6% copper, 0.2% carbon, 0.05% chromium, and 0.11% boron , 0.06% magnesium, 0.2% molybdenum, 1.7% tungsten, 0.43% vanadium, 3.5% rare earth elements, 1.6% refining agent, 2.6% sodium pentafluorophenolate, 4.2% grain refiner, and the rest is aluminum;

[0052] The rare earth elements are in parts by weight, including the following raw materials: 1.6 parts of lanthanum, 1.3 parts of cerium, 0.8 parts of praseodymium, 0.6 parts of neodymium, 0.2 parts of samarium, 0.6 parts of dysprosium, 1 part of holmium, 0.4 parts of ytterbium, and 0.5 parts of yttrium;

[0053] The refining agent includes the following raw materials in parts by weight: 25 parts of sodium chloride, 16 parts of sodium fluoride, 8 parts of graphite, and 7 parts of calcium fluoride;

[0054] The grain refiner includes the following raw mate...

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Abstract

The invention discloses a rare earth-containing aluminium alloy and a preparation method thereof, and belongs to the technical field of aluminium alloy preparation. The rare earth-containing aluminiumalloy is prepared from the following raw materials: titanium, zinc, iron, manganese, copper, carbon, chromium, boron, magnesium, molybdenum, tungsten, vanadium, rare earth elements, a refining agent,sodium pentafluorophenol, a grain refiner and aluminium; the rare earth-containing aluminium alloy is prepared by the steps of melting, refining, slagging-off, casting and the like. By adopting the process of the invention, the tensile strength, the ductility and the corrosion resistance of the aluminium alloy can be remarkably improved.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloy preparation, and in particular relates to an aluminum alloy containing rare earth and a preparation method thereof. Background technique [0002] At present, the automobile industry has become a pillar industry in China. Especially after 2000, with the significant improvement of the material living standards of the people in our country, automobiles have become a rigid necessity in families in modern society. The development of the automobile industry and the increase in car ownership, while promoting the development of my country's manufacturing industry and bringing convenience to people's lives, the problem of rapid consumption of resources caused by fuel consumption and the problem of environmental pollution caused by exhaust emissions have become increasingly prominent. It can be said that lightweight is an important means of energy saving and emission reduction in the automobile indus...

Claims

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Application Information

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IPC IPC(8): C22C21/00C22C1/03C22C1/06
CPCC22C1/026C22C1/03C22C1/06C22C21/00
Inventor 不公告发明人
Owner CHANGSHA WUDAO IND DESIGN CO LTD
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