A magnetic treatment modified aluminum alloy automobile body plate and its preparation method

A technology of aluminum alloy sheet and automobile body, applied in the field of automobile lightweight, can solve the problems of poor formability of alloys, and achieve the effects of excellent formability, enhanced strengthening effect, and good bake hardenability

Active Publication Date: 2020-01-14
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the above-mentioned alloys still have the problem of poor formability by adopting the existing automobile body panel forming technology, and their mechanical performance indicators such as static tensile elongation still cannot meet the requirements of practical applications.
At present, there is no literature report on the use of magnetic treatment technology to improve the formability and mechanical properties of aluminum-magnesium-silicon alloys

Method used

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  • A magnetic treatment modified aluminum alloy automobile body plate and its preparation method
  • A magnetic treatment modified aluminum alloy automobile body plate and its preparation method
  • A magnetic treatment modified aluminum alloy automobile body plate and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A method for preparing a magnetically treated modified aluminum alloy automobile body plate, comprising the following steps:

[0023] 1. Ingredients: According to the mass percentage of each element in the finished aluminum alloy plate for automobile body, Mg: 0.8%, Si: 0.5%, Fe: 0.30%, Cu: 0.20%, Mn: 0.15%, Cr: 0.13%, Zn: 0.50%, Ti: 0.07%, V: 0.60%, Bi: 0.03%, Zr: 0.20%, Be: 1.0%, Co: 0.30%, Ca: 0.60%, and the balance is Al. Pure magnesium ingots and aluminum-based master alloys corresponding to other elements involved in the above components;

[0024] 2. Melting: (1) Add the pure aluminum ingot and aluminum-based intermediate alloy weighed in step 1 into the melting furnace. The melting temperature is 780°C. When the temperature reaches 760°C, turn on the electromagnetic stirrer for stirring. After 30 minutes of electromagnetic After stirring, turn on the electromagnetic stirrer after every 15 minutes of heat preservation, and ensure that the melt temperature rises t...

Embodiment 2

[0042] The difference between this example and Example 1 is that the composition of the aluminum alloy plate used in the experiment is different, and the specific implementation of the magnetic treatment is: the magnetic field frequency is 5 Hz, the magnetic field strength is 4.0 T, and the duration is 20 min.

[0043] The main components of the alloy sheet are shown in Table 3, and the mechanical properties of the obtained alloy sheet at room temperature are shown in Table 4:

[0044] Table 3 Main chemical composition of plate alloys in this case (weight percent)

[0045] alloy Mg Si Fe Cu V Al ingredient 1 0.80％ 0.50％ 0.30％ 0.20％ 0.60％ margin ingredient 2 0.10％ 0.40％ 0.25％ 0.25％ 0.70％ margin ingredient 3 0.60％ 0.35％ 0.20％ 0.15％ 0.65％ margin ingredient 4 0.40％ 0.45％ 0.15％ 0.10％ 0.55％ margin ingredient 5 0.70％ 0.30％ 0.35％ 0.25％ 0.45％ margin

[0046] Table 4 The normal temperature mechanical prop...

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Abstract

The invention provides a magnetically-treated modified aluminum alloy automobile body panel and a preparing method thereof. The preparing method comprises the first step of burdening, the second stepof smelting, the third step of casting, the fourth step of homogenizing annealing, the fifth step of hot rolling, the sixth step of cold rolling, the seventh step of finished product saw cutting, theeighth step of solid solution treatment, the ninth step of pre-aging and the tenth step of magnetic treatment, and then the aluminum alloy panel for an automobile body is obtained. According to the prepared aluminum alloy panel for the automobile body, various properties of common aluminum-magnesium-silicon alloys are guaranteed, meanwhile, the forming performance and mechanical performance are improved, good anti-aging stability and baking hardness are achieved, the alloy can meet the automobile body panel material requirement, and the alloy is applied to the field of automobile lightweight aluminum alloy preparing.

Description

technical field [0001] The invention belongs to the technical field of automobile lightweight, and in particular relates to a magnetically treated modified aluminum alloy automobile body plate and a preparation method thereof. Background technique [0002] Under the urgent situation that the world's automobile industry pays more and more attention to energy saving and environmental protection, reducing the weight of automobiles to reduce energy consumption, reduce exhaust emissions, and improve efficiency has become an important direction for major automobile companies to improve their competitiveness; and the use of aluminum alloys instead of steel materials is One of the main weight reduction methods adopted by automobile manufacturers in various countries. 2000 series (Al-Cu alloy), 5000 series (Al-Mg alloy) and 6000 series (Al-Mg-Si) aluminum alloy sheets have all been used to make automotive body panels. Due to the relatively poor corrosion resistance and strength of 2...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/00C22C1/03C22C1/06C22F1/04C22F3/00
CPCC22C1/026C22C1/03C22C1/06C22C21/00C22F1/002C22F1/04C22F3/00
Inventor 孙倩华林胡志力
Owner WUHAN UNIV OF TECH
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