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High-strength and high-toughness aluminum alloy wheel die forging and preparation method thereof

A high-strength, high-toughness, aluminum alloy technology, applied in the field of high-strength and high-toughness aluminum alloy wheel die forgings and their preparation, can solve the problem that the wheel cannot have high strength, high toughness at the same time, and cannot meet the high strength, high toughness, corrosion resistance, light weight of aluminum alloy materials. Quality requirements and other issues, to achieve the effect of excellent comprehensive mechanical properties, excellent elongation after fracture, and good performance of finished forgings

Active Publication Date: 2021-03-05
山东骏程金属科技有限公司
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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 that the current aluminum alloy die-forged wheel cannot have high strength and high toughness at the same time, so that it cannot meet the technical problem of high strength, high toughness, corrosion resistance and light weight of aluminum alloy materials in the military field, and provides a kind of High-strength and high-toughness aluminum alloy wheel die forgings

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A high-strength and high-toughness aluminum alloy wheel die forging, the element composition is: Si: 0.78%, Mg: 1.20%, Cu: 0.38%, Fe: 0.22%, Mn: 0.15%, Cr: 0.25%, Ti: 0.05% , Sc: 0.02% and the balance Al.

[0031] The specific preparation method is as follows:

[0032] (1) Weigh and mix according to the mass ratio of silicon nitride powder, nickel nitrate and ethanol as 30:2:15, stir magnetically for 30 minutes to obtain a mixed slurry, add 0.8% of the total amount of silicon nitride powder and nickel nitrate The polyvinylpyrrolidone, the mixed slurry was ball-milled for 10 hours, and the slurry was vacuum-dried after ball-milling. After the dried powder was left to stand for 20 hours, it was passed through a 200-mesh sieve, and then in a nitrogen atmosphere, 850-900 ° C, 2- Sintering at 3MPa for 2h, crushing and grinding again after sintering, and passing through a 200-mesh sieve to obtain a mixed powder;

[0033] (2) Preparation of aluminum alloy solution: Weigh pur...

Embodiment 2

[0046]A high-strength and high-toughness aluminum alloy wheel die forging, the element composition is: Si: 0.80%, Mg: 1.18%, Cu: 0.42%, Fe: 0.25%, Mn: 0.12%, Cr: 0.23%, Ti: 0.03% , Sc: 0.01%% and the balance Al.

[0047] The preparation method is the same as in Example 1.

Embodiment 3

[0049] A high-strength and high-toughness aluminum alloy wheel die forging, the element composition is: Si: 0.84%, Mg: 1.24%, Cu: 0.40%, Fe: 0.20%, Mn: 0.13%, Cr: 0.26%, Ti: 0.03%, Sc: 0.03% and the balance Al.

[0050] The preparation method is the same as in Example 1.

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PUM

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Abstract

The invention belongs to the technical field of alloy materials, and particularly relates to a high-strength and high-toughness aluminum alloy wheel die forging and a preparation method thereof. The high-strength and high-toughness aluminum alloy wheel die forging is composed of the following elements in percentage by mass: 0.78 percent to 0.84 percent of Si, 1.18 percent to 1.24 percent of Mg, 0.38 percent to 0.42 percent of Cu, 0.20 percent to 0.25 percent of Fe, 0.12 percent to 0.15 percent of Mn, 0.23 percent to 0.26 percent of Cr, 0.01 percent to 0.05 percent of Ti, 0.01 percent to 0.03 percent of Sc and the balance Al. According to the high-strength and high-toughness aluminum alloy wheel die forging and the preparation method thereof provided by the invention, by optimizing alloy components, assisting in adding silicon nitride powder and adopting the optimized aluminum bar heating process, solid solution process and aging process after die forging, the comprehensive performancerequirement of the aluminum alloy die forging is met, and the prepared aluminum alloy die forging is good in surface quality, good in performance of finished forgings in industrial production and excellent in comprehensive mechanical property.

Description

technical field [0001] The invention belongs to the technical field of alloy materials, and in particular relates to a high-strength and high-toughness aluminum alloy wheel die forging and a preparation method thereof. Background technique [0002] High-strength aluminum alloy has the characteristics of low density, high strength, good processing performance and good welding performance, and is widely used in aerospace, aviation industry and civil industry and other fields. Especially in the aviation industry, it occupies a very important position and is one of the main structural materials in the aerospace industry. At present, the aluminum alloys commonly used for automobile aluminum alloy wheels on the market include Al-Mg-Si 6061 alloy, which has average strength and toughness; A356 alloy, which has poor strength and toughness, cannot solve the problem of high strength and high toughness, and cannot meet the needs of the military field. Requirements for high strength, h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/08C22C32/00C22C1/10C22F1/047
CPCC22C21/08C22C32/0068C22C1/1036C22F1/047C22F1/002C22C1/1047
Inventor 孙谱李洪光李东东穆瑞鹏
Owner 山东骏程金属科技有限公司
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