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Aluminum alloy treated by adopting TiSiN and EuH2 powder and preparation method for aluminum alloy

A technology of aluminum alloy and aluminum alloy melt, applied in the field of high-strength aluminum alloy, can solve the problems of not meeting the requirements of mechanical properties, low hardenability of large ingots, poor formability, etc., so as to shorten the time for dispersion and uniformity , high heat-treatable properties, strength and hardness improvement effect

Inactive Publication Date: 2012-07-11
GUIZHOU HUAKE ALUMINUM MATERIAL ENG TECH RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] It can be seen that in addition to the poor formability of the current aluminum alloy materials when casting large ingots, the hardenability of large ingots during heat treatment is not high, the tempering resistance is poor, and they cannot meet higher mechanical property requirements. Or some special properties (such as heat resistance, corrosion resistance), etc., are also major defects

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] One using TiSiN and EuH 2 Powder-treated aluminum alloys, in mass percent, including 0.5% Fe, 0.15% Cu, 0.4% Mn, 0.1% Cr, 0.5% Mg, 0.25% Zn, 1.0% Ti, 1.0% Si, 1.0% N, 1.0% Eu, the balance is Al and unavoidable impurities, the content of each impurity is not more than 0.05% of the total mass percentage, and the content of all impurities is not more than 0.15% of the total mass percentage.

[0033] The present invention also provides the described adopting TiSiN and EuH 2 Preparation method of powder-treated aluminum alloy, adding TiSiN and EuH in composite treatment 2 , including the following steps:

[0034] Step 1: Use TiSiN and EuH as described 2 Component preparation of powder-treated aluminum alloys, including 0.5% Fe, 0.15% Cu, 0.4% Mn, 0.1% Cr, 0.5% Mg, and 0.25% Zn in the mass percentage of the total product;

[0035] Step 2: Add aluminum ingots or molten aluminum into the smelting furnace first, heat it to melt it completely, add the materials prepared in St...

Embodiment 2

[0038] One using TiSiN and EuH 2 Powder-treated aluminum alloys, in mass percent, include 0.4% Fe, 0.25% Cu, 0.8% Mn, 0.08% Cr, 0.9% Mg, 0.2% Zn, 1.3% Ti, 1.3% Si, 1.3% N, 1.3% Eu, the balance is Al and unavoidable impurities, the content of each impurity is not more than 0.05% of the total mass percentage, and the content of all impurities is not more than 0.15% of the total mass percentage.

[0039] The present invention also provides the described adopting TiSiN and EuH 2 Preparation method of powder-treated aluminum alloy, adding TiSiN and EuH in composite treatment 2 , including the following steps:

[0040] Step 1: Use TiSiN and EuH as described 2 Component preparation of powder-treated aluminum alloys, including 0.4% Fe, 0.25% Cu, 0.8% Mn, 0.08% Cr, 0.9% Mg, and 0.2% Zn in the mass percentage of the total product;

[0041] Step 2: Add aluminum ingots or molten aluminum into the smelting furnace first, heat it to melt it completely, add the materials prepared in Step...

Embodiment 3

[0044] One using TiSiN and EuH 2 Powder-treated aluminum alloys, in mass percent, including 0.3% Fe, 0.4% Cu, 1.0% Mn, 0.05% Cr, 1.2% Mg, 0.1% Zn, 1.7% Ti, 1.7% Si, 1.7% N, 1.7% Eu, the balance is Al and unavoidable impurities, the content of each impurity is not more than 0.05% of the total mass percentage, and the content of all impurities is not more than 0.15% of the total mass percentage.

[0045] The present invention also provides the described adopting TiSiN and EuH 2 Preparation method of powder-treated aluminum alloy, adding TiSiN and EuH in composite treatment 2 , including the following steps:

[0046] Step 1: Use TiSiN and EuH as described 2 Component preparation of powder-treated aluminum alloys, including 0.3% Fe, 0.4% Cu, 1.0% Mn, 0.05% Cr, 1.2% Mg, 0.1% Zn:

[0047] Step 2: First add aluminum ingots or molten aluminum into the smelting furnace, heat it to melt it completely, add the raw materials in step 1 according to the formula ratio, make it completely...

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Abstract

The invention relates to an aluminum alloy treated by adopting TiSiN and EuH2 powder and a preparation method for the aluminum alloy. 1.0 to 1.7 percent of Ti, 1.0 to 1.7 percent of Si, 1.0 to 1.7 percent of N and 1.0 to 1.7 percent of Eu are added into wrought aluminum alloy in a powder form; in a process of adding the elements into an aluminum alloy melt in a fluidized form together with the protective gas, the elements have bigger specific surface area compared with common blocky substances, and can be quickly dispersed and fully contacted with the melt so as to remarkably shorten the dispersing and homogenizing time. When the high-strength aluminum alloy is cast, heterogeneous nucleation cores can be effectively increased in the alloy solidification process, so that an effect of thinning crystal grains is achieved, and the strength of the alloy is enhanced; the added elements can promote formation of interstitial atoms and interstitial phases, and are high in solubility in an alpha (Al) solid solution at a high temperature and low in solubility at room temperature, so that the alloy has high heat treatment property; and after heat treatment, the strength and the hardness of the alloy are greatly improved.

Description

technical field [0001] The invention relates to a high-strength aluminum alloy and a preparation method thereof. Background technique [0002] Aluminum alloys for deep processing often need to be first cast into large ingots, such as flat ingots, round bars, etc., and then processed into various finished products by means of rolling, extrusion, forging, etc. These processes are basically related to heat treatment. Combined, if the final product can be used directly, it will also go through operations such as segmentation, surface processing, and passivation treatment. These processing methods require that the aluminum alloy material itself has good deep processing performance, including casting performance, pressure processing deformation performance, heat treatment strengthening performance, corrosion resistance performance, fatigue damage resistance performance, surface processing and coating performance, etc. Among them, the melting and casting performance is the basis o...

Claims

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Application Information

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IPC IPC(8): C22C21/00C22C1/06B22D27/20
Inventor 车云张中可门三泉
Owner GUIZHOU HUAKE ALUMINUM MATERIAL ENG TECH RES
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