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A kind of aluminum alloy and its preparation method and aluminum alloy structural parts

A technology for aluminum alloys and structural parts, which is applied in the field of materials and can solve problems such as general and unsatisfactory mechanical properties.

Active Publication Date: 2021-11-12
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the most commonly used cast aluminum alloy is Al-Si series cast aluminum alloy. The Al-Si series cast aluminum alloy has good casting fluidity and can meet the casting process requirements, but its mechanical properties are average and cannot meet the relatively high strength requirements. High aluminum alloy die casting products

Method used

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  • A kind of aluminum alloy and its preparation method and aluminum alloy structural parts
  • A kind of aluminum alloy and its preparation method and aluminum alloy structural parts
  • A kind of aluminum alloy and its preparation method and aluminum alloy structural parts

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] According to the formula in Table 1, aluminum alloy die-casting parts were obtained according to the following smelting steps and die-casting parameters:

[0065]After calculating the ingredients, weigh the pure Al ingot, pure Zn, pure Mg, Al-Si master alloy, Al-Cu master alloy, Al-Fe master alloy, Al-Mn master alloy, Al-Sr master alloy according to the required amount , Al-Ni master alloy and Al-Ti master alloy; put the pure Al ingot and Al-Si master alloy into the smelting furnace and heat until they are completely melted, and stir the melt once every 2 minutes to 3 minutes (total stirring is about 3 times to 5 times) Then add Al-Si master alloy, Al-Cu master alloy, Al-Mn master alloy, Al-Sr master alloy, Al-Ni master alloy, Al-Ti master alloy and Al-Zr master alloy into the melt Add in pure Zn ingots and pure Mg ingots at the end until they are melted, and stir to make the ingredients uniform. Stir the aluminum alloy liquid evenly, detect and adjust the content of e...

Embodiment 2～55

[0067] According to the formula in Table 1, the method of Example 1 was used to obtain aluminum alloy die castings.

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Abstract

The application provides an aluminum alloy, a preparation method thereof, and an aluminum alloy structural part. The aluminum alloy includes; 8.0-13.0wt% of Si; 2.0-3.0wt% of Cu; 3.0-5.0wt% of Zn; 0.6-0.9wt% of Mg; 0.5-0.8wt% of Mn; 0.05‑0.35wt% Zr; 0.01‑0.05wt% Ti; 0.005‑0.04wt% Sr; 0.001‑0.02wt% Cr; 0.01‑0.02wt% Ga; Er; 0.005-0.1wt% Ni; the balance is Al and unavoidable impurities; wherein the weight content ratio of Er to Zr is 0.01-1.0:1. By controlling the composition and content of alloying elements, the aluminum alloy not only has a high yield strength, but also has good ductility and excellent tensile strength. It is suitable for structural parts with high strength requirements, such as 3C product structural parts, etc. .

Description

technical field [0001] The present application relates to the field of material technology, and in particular, relates to an aluminum alloy, a preparation method thereof, and an aluminum alloy structural part. Background technique [0002] Aluminum alloy has the characteristics of light weight, good toughness, corrosion resistance and unique metallic luster, and is used by more and more electronic appliances, communication equipment, lighting devices, automobiles and other parts, such as smart phones, notebook computers, tablet computers The housing of the LED lamp, the radiator and lampshade of the LED lamp, the controller chassis of the new energy vehicle, the housing of the driving motor, etc. The above applications put forward higher requirements for the strength and toughness of aluminum alloys. At present, the most commonly used cast aluminum alloy is Al-Si series cast aluminum alloy. The Al-Si series cast aluminum alloy has good casting fluidity and can meet the cast...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/10C22C1/02
CPCC22C1/026C22C21/10
Inventor 郭强王梦得安维
Owner BYD CO LTD