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Grain refiner and application to preparation of rare earth aluminum alloy materials

A grain refiner, a technology for aluminum alloy materials, applied in the field of aluminum alloy preparation, can solve problems such as tensile strength and low elongation, overcome easy aggregation and slag inclusion, enhance tensile strength, and improve tensile strength Effect

Inactive Publication Date: 2018-02-27
广西胜荣科技集团有限公司
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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 low cost and excellent impact toughness, but there are problems of low tensile strength and elongation

Method used

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  • Grain refiner and application to preparation of rare earth aluminum alloy materials

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preparation example Construction

[0026] The preparation method of the rare earth aluminum alloy material comprises the following steps:

[0027] S1: Add aluminum ingots to the electromagnetic induction furnace, increase the temperature to 880-920°C to melt them, add nickel, manganese, copper, and lanthanum powders wrapped in aluminum foil to melt, and stir the alloy melt. After stirring for 15-20min, perform degassing treatment, stand still, and then perform ultrasonic treatment to obtain an aluminum-nickel-manganese-copper-lanthanum alloy intermediate. The temperature of ultrasonic treatment is 800-820°C, and the ultrasonic power is 20-25KW. The processing time is 25-30min; adopt the same method to prepare the aluminum-titanium-zirconium-cerium alloy intermediate; the aluminum-nickel-manganese-copper-lanthanum alloy intermediate and the aluminum-titanium-zirconium-cerium alloy intermediate by weight Making a grain refiner, the size of the grain refiner is below 12 μm;

[0028] S2: Put zinc, magnesium, coppe...

Embodiment 1

[0035] A rare earth aluminum alloy material, comprising the following raw materials in mass percentage: 3.5% zinc, 0.06% magnesium, 0.03%-0.7% copper, 0.1% manganese, 0.1% nickel, 0.1% zirconium, 1.5% titanium, 0.4% iron, chromium 0.02%, rare earth element 1.2%, refining agent 0.8%, sodium lauryl sulfate 0.6%, grain refiner 2%, and the rest is aluminum;

[0036] The rare earth elements are in parts by weight, including the following raw materials: 1.5 parts of lanthanum, 1-2 parts of praseodymium, 0.5 parts of neodymium, 0.6 parts of dysprosium, 1.3 parts of holmium, and 0.3 parts of ytterbium;

[0037] The refining agent includes the following raw materials in parts by weight: 18 parts of sodium fluoride, 10 parts of graphene, and 6 parts of calcium fluoride;

[0038] The grain refiner includes the following raw materials in parts by weight: 10 parts of aluminum-nickel-manganese-copper-lanthanum alloy intermediates, 4 parts of aluminum-titanium-zirconium-cerium alloy intermed...

Embodiment 2

[0047] A rare earth aluminum alloy material, comprising the following raw materials in mass percentage: 4.5% zinc, 0.1% magnesium, 0.32% copper, 0.2% manganese, 0.16% nickel, 0.5% zirconium, 1.7% titanium, 0.6% iron, 0.05% chromium, 2.5% rare earth elements, 1.2% refining agent, 0.9% sodium lauryl sulfate, 2.8% grain refiner, and the rest is aluminum;

[0048] The rare earth elements are in parts by weight, including the following raw materials: 2 parts of lanthanum, 1.6 parts of praseodymium, 0.9 parts of neodymium, 0.8 parts of dysprosium, 1.7 parts of holmium, and 0.8 parts of ytterbium;

[0049] The refining agent includes the following raw materials in parts by weight: 122 parts of sodium fluoride, 14 parts of graphene, and 9 parts of calcium fluoride;

[0050] The grain refiner includes the following raw materials in parts by weight: 15 parts of aluminum-nickel-manganese-copper-lanthanum alloy intermediates, 6 parts of aluminum-titanium-zirconium-cerium alloy intermediat...

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Abstract

The invention discloses a grain refiner and application to preparation of rare earth aluminum alloy materials, and belongs to the technical field of aluminum alloy preparation. The grain refiner comprises the following raw materials in parts by weight: 10-18 parts of aluminum-nickel-manganese-copper-lanthanum alloy intermediate, and 4-9 parts of aluminum-titanium-zirconium-cerium alloy intermediates. The grain refiner is adopted to prepare the rare earth aluminum alloy materials, so that the tensile strength and the ductility of the aluminum alloy materials can be improved.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloy preparation, and in particular relates to a grain refiner and its application in the preparation of rare earth aluminum alloy materials. Background technique [0002] High-strength aluminum alloy has the characteristics of high strength, good plasticity, good weldability, and excellent corrosion resistance. It is widely used in various aircraft structural parts and other high-stress corrosion-resistant structural parts with high strength requirements. It is currently used by many military and It is an indispensable and important structural material in civil aircraft and transportation. With the increasing requirements for materials in the development of aerospace technology, researchers are focusing on the development of high-strength and high-toughness aluminum alloys with higher strength and excellent comprehensive properties. At present, in order to improve the comprehensive performance...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/06C22C1/03C22C21/00
CPCC22C1/06C22C1/026C22C1/03C22C21/00
Inventor 潘小群
Owner 广西胜荣科技集团有限公司
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