A high-strength and high-toughness aluminum alloy wheel die forging and its preparation method

A high-strength, high-toughness, aluminum alloy technology, applied in the field of high-strength, high-toughness aluminum alloy wheel die forgings and its preparation, can solve the problem that the aluminum alloy material cannot meet the requirements of high strength, high toughness, corrosion resistance, and light weight, and the wheel cannot have high strength at the same time , high toughness and other issues, to achieve the specified non-proportional elongation strength and elongation after break performance, excellent comprehensive mechanical properties, and good surface quality

Active Publication Date: 2021-11-26
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 in particular 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 by mass percentage: Si: 0.78-0.84%, Mg: 1.18%-1.24%, Cu: 0.38%-0.42%, Fe: 0.20%-0.25%, Mn: 0.12% to 0.15%, Cr: 0.23% to 0.26%, Ti: 0.01% to 0.05%, Sc: 0.01% to 0.03%, and the balance Al. The present invention optimizes the alloy composition, assists in adding silicon nitride powder, and adopts optimized aluminum rod heating process, solid solution and aging process after die forging to meet the comprehensive performance requirements of aluminum alloy die forgings, and the prepared aluminum alloy die forgings The surface quality is good, the performance of finished forgings in industrial production is good, and the comprehensive mechanical properties are excellent.

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 Patents(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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