High-strength and high-toughness heat-treatment-free aluminum alloy material and preparation method thereof

An aluminum alloy material, heat treatment-free technology, applied in the field of aluminum alloy casting, can solve the problems that the mechanical properties cannot meet the standard requirements, consume a lot of energy, energy and time, and are not suitable for heat treatment strengthening, etc., to promote localized production and breakthrough technology. Bottleneck, effect of good mechanical properties

Pending Publication Date: 2021-12-07
隆达铝业(顺平)有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The aluminum alloy casting molding can realize a simple die-casting process, which can be improved from a few hours of welding to a few minutes of die-casting, simplifying the connection process, reducing costs and increasing efficiency; and with the further expansion of the integration field, the integrated structural parts have a larger size. The characteristics of large size and more complex shape are not suitable for heat treatment strengthening, and the mechanical properties of traditional aluminum alloy materials cannot meet the standard requirements without heat treatment
And heat treatment needs to consume a lot of energy, energy and time, which increases the production cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] This embodiment provides a high-strength and tough heat-free aluminum alloy material, which includes the following components by mass percentage:

[0043] Si9.5%, Fe0.10%, Mg0.2%, Zn0.15%, Mn0.5%, Cu0.08%, Ti0.09%, Ca0.004%, Sr0.015%, Zr0.2%, Mo0.05%, V0.15%, Cr0.015%, Na0.002%, P0.002%, Cd0.01%, Li0.001%, B0.0025%, Ga0.05%, the balance is Al and Unavoidable impurities, the maximum content of a single element in the unavoidable impurities is 0.018wt%, and the total content is 0.13wt%.

[0044] Its preparation method comprises the following steps:

[0045] (1) Prepare raw materials for subsequent use according to the ratio of alloying elements;

[0046] (2) Heat the furnace to 755°C for heat preservation, first put in A00 aluminum ingots, and after it is completely melted, put in the rest of the raw materials, stir for 15 minutes to fully dissolve the alloy elements in the melt, and obtain the first alloy liquid;

[0047] (3) Refining and slag removal: adjust the temper...

Embodiment 2

[0052] This embodiment provides a high-strength and tough heat-free aluminum alloy material, which includes the following components by mass percentage:

[0053] Si10.5%, Fe0.08%, Mg0.05%, Zn0.3%, Mn0.3%, Cu0.1%, Ti0.15%, Ca0.005%, Sr0.005%, Zr0.3%, Mo0.1%, V0.28%, Cr0.02%, Na0.002%, P0.0015%, Cd0.009%, Li0.001%, B0.0025%, Ga0.03%, the balance is Al and Unavoidable impurities, the maximum content of a single element in the unavoidable impurities is 0.02wt%, and the total content is 0.14wt%.

[0054] Its preparation method comprises the following steps:

[0055] (1) Prepare raw materials for subsequent use according to the ratio of alloying elements;

[0056] (2) Heat the furnace to 750°C for heat preservation, first put in the A00 aluminum ingot, after it is completely melted, put in the rest of the raw materials, stir for 15 minutes to fully dissolve the alloy elements in the melt, and obtain the first alloy liquid;

[0057] (3) Refining and slag removal: Adjust the temper...

Embodiment 3

[0062] This embodiment provides a high-strength and tough heat-free aluminum alloy material, which includes the following components by mass percentage:

[0063] Si8.0%, Fe0.15%, Mg0.3%, Zn0.05%, Mn0.6%, Cu0.08%, Ti0.05%, Ca0.004%, Sr0.030%, Zr0.1%, Mo0.09%, V0.3%, Cr0.02%, Na0.001%, P0.002%, Cd0.01%, Li0.0008%, B0.0020%, Ga0.02%, the balance is Al and Unavoidable impurities, the maximum single element content in unavoidable impurities is 0.015wt%, and the total content is 0.15wt%.

[0064] Its preparation method comprises the following steps:

[0065] (1) Prepare raw materials for subsequent use according to the ratio of alloying elements;

[0066] (2) Heat the furnace to 760°C for heat preservation, first put in the A00 aluminum ingot, after it is completely melted, put in the rest of the raw materials, stir for 15 minutes to fully dissolve the alloy elements in the melt, and obtain the first alloy liquid;

[0067] (3) Refining and slag removal: adjust the temperature of ...

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PUM

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Abstract

The invention discloses a high-strength and high-toughness heat-treatment-free aluminum alloy material and a preparation method, and belongs to the technical field of aluminum alloy casting. The high-strength and high-toughness heat-treatment-free aluminum alloy material comprises the following components in percentage by mass: 8.0-10.5% of Si, less than or equal to 0.15% of Fe, 0.05-0.3% of Mg, 0.05-0.3% of Zn, 0.3-0.6% of Mn, less than or equal to 0.1% of Cu, 0.05-0.15% of Ti, less than or equal to 0.005% of Ca, 0.005-0.030% of Sr, 0.1-0.3% of Zr, 0.01-0.1% of Mo, 0.01-0.3% of V, less than or equal to 0.02% of Cr, less than or equal to 0.002% of Na, less than or equal to 0.002% of P, less than or equal to 0.01% of Cd, less than or equal to 0.001% of Li, less than or equal to 0.0025% of B, less than or equal to 0.05% of Ga, and the balance Al and inevitable impurities. The alloy does not need to be subjected to heat treatment, and has excellent casting performance and mold filling capacity and good tensile strength, yield strength and toughness.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy casting, in particular to a high-strength and tough heat-free aluminum alloy material and a preparation method thereof. Background technique [0002] With the demand for environmental protection and energy saving, the lightweight design of automobiles has become the trend of the world's automobile development. The development of automobile lightweight is inseparable from the development of materials, molding technology, equipment, structural design and other related fields. Among them, the die-casting process of structural parts and the manufacturing technology of materials for structural parts are the key to the development of lightweight automobiles. [0003] Automotive structural parts refer to the components that play the main supporting and load-bearing role on the car body, and are used as the installation basis for body parts; they usually have the characteristics of large size, thi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/02C22C1/03C22C1/06
CPCC22C21/02C22C1/026C22C1/03C22C1/06
Inventor 郭军辉张秋合赵玉兵王妍妍徐瑞宁增超郑聚备郑红亮艾武
Owner 隆达铝业(顺平)有限公司
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