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Aluminium alloy plate with superplasticity and manufacturing method thereof

A technology of aluminum alloy sheet material and manufacturing method, which is applied in the field of aluminum alloy materials and its manufacturing, can solve the problems of low plasticity of 5083 alloy, achieve dimensional stability, and satisfy the effect of forming deformation

Inactive Publication Date: 2015-12-30
NORTHEAST LIGHT ALLOY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of low plasticity of the existing 5083 alloy, and provide a superplastic aluminum alloy plate and its manufacturing method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0013] Specific embodiment 1: The mass percentage of each element in the superplastic aluminum alloy sheet of this embodiment is as follows: Mg: 4.0% to 5.0%, Mn: 0.50% to 0.90%, Cr: 0.05% to 0.20%, Zr: 0.05 %~0.15%, Ti: 0.02%~0.08%, Cu﹤0.05%, Zn﹤0.10%, Si﹤0.10%, Fe﹤0.12% and the balance Al.

[0014] The impurity elements in this embodiment are derived from aluminum ingots; impurities Si<0.10%, Fe<0.12%, Cu<0.05%, Zn<0.10%, and other single impurities ≤0.05%. Impurities in this range have an impact on the aluminum alloy sheet There is no impact on performance.

specific Embodiment approach 2

[0015] Specific embodiment two: this embodiment is different from specific embodiment one in that the mass percentage of each element in the superplastic aluminum alloy sheet is as follows: Mg: 4.65%, Mn: 0.70%, Cr: 0.11%, Zr: 0.13% , Ti: 0.03%, Cu <0.05%, Zn <0.05%, Si <0.10%, Fe <0.12% and the balance Al.

specific Embodiment approach 3

[0016] Specific embodiment 3: The method for manufacturing the superplastic aluminum alloy sheet of this embodiment is implemented in the following steps:

[0017] 1. In terms of mass percentage, Mg: 4.0%~5.0%, Mn: 0.50%~0.90%, Cr: 0.05%~0.20%, Zr: 0.05%~0.15%, Ti: 0.02%~0.08% and the balance Al Proportionally weigh high-purity aluminum ingots, pure magnesium ingots, aluminum-manganese master alloys, aluminum-chromium master alloys, aluminum-titanium master alloys, magnesium-zirconium master alloys, and aluminum-titanium-boron grain refiners as raw materials;

[0018] 2. Put the high-purity aluminum ingots, aluminum-chromium master alloy, aluminum-manganese master alloy and aluminum-titanium master alloy weighed in step 1 into the melting furnace, and smelt at a temperature of 700℃~750℃, when the alloy in the melting furnace When in a semi-molten state, add magnesium-zirconium master alloy and pure magnesium ingot, continue to keep the temperature, when the alloy in the melting fur...

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Abstract

An aluminium alloy plate with superplasticity and a manufacturing method thereof. The invention relates to an aluminium alloy plate with superplasticity and a manufacturing method thereof and aims to solve the problem that plasticity of existing 5083 alloy is low. The manufacturing method comprises the following steps: 1, weighing alloy raw materials including 4.0-5.0 wt% of Mg, 0.50-0.90 wt% of Mn, 0.05-0.20 wt% of Cr, 0.05-0.15 wt% of Zr, 0.02-0.08 wt% of Ti and the rest of Al; 2, smelting the alloy raw materials; 3, casting to prepare an ingot; 4, annealing the alloy ingot; 5, hot-rolling; and 6, carrying out medium-temperature coiling rolling to obtain the aluminium alloy plate. Horizontal elongation rate of the aluminium alloy plate is 220-240%, and its vertical elongation rate is 240-260%. The aluminium alloy plate has good superplasticity and also has good mechanical property.

Description

Technical field [0001] The invention relates to an aluminum alloy material with superplasticity and a manufacturing method thereof. Background technique [0002] my country's rail transportation industry is developing rapidly, and the demand for aluminum alloy materials in subways, light rail trains and other industries is increasing, and the application and development of aluminum alloy superplastic sheets is more urgent. 5083 alloy is an Al-Mg series alloy. The series alloy uses Mg as the main additive element. It has a lower density than pure aluminum, corrosion resistance, good weldability and polishing performance, low price and many other advantages. It can be used to make various structures Parts, widely used in shipbuilding, automobile, aerospace and other fields. However, for alloys with high Mg content, due to their relatively low plasticity, it is difficult to manufacture some complex components for automobiles and aerospace using conventional plastic forming methods....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/08C22C21/06C22C1/03C22F1/047
Inventor 路丽英刘显东刘洪雷佟有志林森丛福官闫春宝李欣斌刘世雷
Owner NORTHEAST LIGHT ALLOY CO LTD
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