A kind of high-strength aluminum alloy treated with nickel carbide and its preparation method

A high-strength, nickel carbide technology, applied in the field of aluminum alloy materials and their high-quality treatment

Inactive Publication Date: 2016-02-10
GUIZHOU HUAKE ALUMINUM MATERIAL ENG TECH RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to add nickel carbide in a compound treatment mode to partially dissolve it in the melt, aiming at the problems of formability and low hardenability in the heat treatment process of the current aluminum alloy in the melting and casting process. Provide atomic state alloy elements Ni and C elements to generate a variety of atomic state metamorphic elements. With the support of atomic state and rapid and uniform distribution means, it can overcome the shortcomings of aluminum alloy performance and improve its strength, toughness, formability and hardenability , providing high-end substrates for efficient deep processing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Step one, select a group of elements according to the formula, by weight ratio: the alloy composition is Cu: 3.0%, Mg: 0.45%, Zn: 1.25%, modifier NiC- 3 0.1% of the total mass of the charge, the rest is Al and inevitable trace impurities, of which the inevitable trace impurities, Si and Fe are all impurities brought from the raw materials, and Si: ≤0.5%, Fe: ≤0.5% ; The total amount of the alloy prepared is 1000kg, then the weight of each substance required is calculated as: Cu: 300kg, Mg: 4.5kg, Zn: 12.5kg, NiC- modifier 3 : 1kg, Al: 982.0kg;

[0022] Step 2: First add aluminum ingot or molten aluminum to the smelting furnace, heat to melt it completely, add the alloy elements selected in step 1 according to the formula ratio, to completely dissolve and melt them, after refining, at 700~1000℃ Insulation; the melting process is completed in a closed environment;

[0023] Step 3: Use a mixed gas of nitrogen and argon (V / V1:1), add a small amount of chlorine (volume ratio: 1%)...

Embodiment 2

[0025] Step one, select a group of elements according to the formula, in terms of weight ratio: the alloy composition is Cu: 3.1%, Mn: 0.05%, Mg: 0.475, Cr: 0.005%, Zn: 1.25%, Ti: 0.05%, deterioration NiC- 3 0.075% of the total mass of the charge, the rest is Al and inevitable trace impurities, of which the inevitable trace impurities, Si and Fe are all impurities brought from the raw materials, and Si: ≤0.5%, Fe: ≤0.5% ; The total amount of the prepared alloy is 1000kg, and the weight of each substance required is calculated as: Cu: 31kg, Mn: 0.5kg, Mg: 4.75kg, Cr: 0.05kg, Zn: 12.5kg, Ti: 0.5kg , Modifier NiC- 3 : 0.75kg, Al: 950.0kg;;

[0026] Step 2: First add aluminum ingot or molten aluminum to the smelting furnace, heat to melt it completely, add the alloy elements selected in step 1 according to the formula ratio, to completely dissolve and melt them, after refining, at 700~1000℃ Insulation; the melting process is completed in a closed environment;

[0027] Step 3: Use a m...

Embodiment 3

[0029] Step one, select a group of elements according to the formula, by weight ratio: the alloy composition is Cu: 3.2%, Mn: 0.1%, Mg: 0.5%, Cr: 0.01%, Zn: 1.5%, Ti: 0.1%, Modifier NiC- 3 0.1% of the total mass of the charge, the rest is Al and inevitable trace impurities, of which the inevitable trace impurities, Si and Fe are all impurities brought from the raw materials, and Si: ≤0.5%, Fe: ≤0.5% ; The total amount of the alloy prepared is 1000kg, and the weight of each substance required is calculated as: Cu: 32kg, Mn: 1kg, Mg: 5kg, Cr: 0.1kg, Zn: 15kg, Ti: 1kg, NiC- 3 :1kg, Al: 944.9kg;

[0030] Step 2: First add aluminum ingot or molten aluminum to the smelting furnace, heat to melt it completely, add the alloy elements selected in step 1 according to the formula ratio, to completely dissolve and melt them, after refining, at 700~1000℃ Insulation; the melting process is completed in a closed environment;

[0031] Step 3: Use a mixed gas of nitrogen and argon (V / V1:1), add a ...

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Abstract

The invention discloses a high-strength aluminum alloy treated with nickel carbide and a preparation method thereof. In terms of weight percentage, the alloy composition is Cu: 3.0-3.2%, Mn: ≤0.1%, Mg: 0.45-0.5%, Cr: ≤0.01%, Zn: 1.0-1.5%, Ti: ≤0.1%, Si: ≤0.5%, Fe: ≤0.5%, modifier NiC3 is 0.05-0.1% of the total mass of charge, the rest is Al and unavoidable trace The aluminum alloy of the present invention has the characteristics of high strength and good casting performance.

Description

technical field [0001] The invention relates to an aluminum alloy material and a high-quality treatment method thereof, in particular to a nickel carbide-treated 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, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/18C22C1/02C22C1/06
Inventor 门三泉张中可车云朱绍严
Owner GUIZHOU HUAKE ALUMINUM MATERIAL ENG TECH RES
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