A kind of aluminum magnesium silicon scandium zirconium alloy and preparation method thereof

A zirconium alloy, aluminum-magnesium-silicon technology, applied in the field of aluminum-magnesium-silicon-scandium-zirconium series alloys and its preparation, can solve problems such as difficulty in meeting design and use requirements, and achieve low alloying element content, inhibition of recrystallization, and simple composition. Effect

Active Publication Date: 2022-06-28
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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  • Application Information

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Problems solved by technology

With the development of the aerospace industry, the weight reduction and strength requirements of materials for the new generation of aerospace vehicles are increasing day by day, and the existing traditional aluminum-magnesium-silicon alloys are difficult to meet the design and use requirements.

Method used

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  • A kind of aluminum magnesium silicon scandium zirconium alloy and preparation method thereof
  • A kind of aluminum magnesium silicon scandium zirconium alloy and preparation method thereof
  • A kind of aluminum magnesium silicon scandium zirconium alloy and preparation method thereof

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Experimental program
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Effect test

Embodiment

[0033] The chemical composition and weight percentage of the aluminum-magnesium-silicon-scandium-zirconium alloy are one of the following three ratios:

[0034] The first proportion: Mg 0.5%~1.1%, Si 0.4%~1.2%, Sc 0.02%~0.25%, impurities Cu≤0.1%, Fe≤0.35%, other impurities individually≤0.05%, total amount≤0.15% , the remainder is Al;

[0035] The second proportion: Mg 0.5%~1.1%, Si 0.4%~1.2%, Zr 0.04%~0.18%, impurities Cu≤0.1%, Fe≤0.35%, other impurities individually≤0.05%, total amount≤0.15% , the remainder is Al;

[0036] The third proportion: Mg 0.5%~1.1%, Si 0.4%~1.2%, Sc 0.02%~0.25%, Zr 0.04%~0.18% and 0.08%≤Zr+Sc≤0.40%, impurity Cu≤0.1% , Fe≤0.35%, other impurities individually≤0.05%, the total amount≤0.15%, and the balance is Al.

[0037] A φ320mm round ingot is prepared by the preparation method of the present invention, and the ingot composition is shown in Table 1.

[0038] Table 1 Ingot alloy composition weight percentage (%)

[0039]

[0040]

[0041] Af...

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Abstract

The present invention relates to an aluminum magnesium silicon scandium zirconium series alloy and a preparation method thereof. The aluminum magnesium silicon scandium zirconium alloy adopts the element Zr, Sc, Zr / Sc composite microalloying scheme to obtain a subgrain texture containing a certain component The mixed crystal structure improves the overall strength and plasticity properties of the material. In this microalloying scheme, the element Sc is selected from 0.02% to 0.25%, the element Zr is selected from 0.04% to 0.18%, and when the two are combined, 0.08%≤Zr+Sc≤0.40% is selected, the purpose of which is to obtain a subgrain containing a certain component The mixed crystal structure of the texture improves the comprehensive strength and plastic properties of the material. The new aluminum-magnesium-silicon-scandium-zirconium alloy products produced by the method of the present invention have excellent corrosion resistance and weldability, compared with traditional aluminum-magnesium-silicon alloys. Higher strength and resistance to welding softening, tensile strength and yield strength increased by 20% to 36% and 30% to 51% respectively, and elongation is higher than 10%; welded joint strength is 51% to 54%, and the joint coefficient is from The 0.8 level was raised to the 0.9 level. The material product can be used for structural parts in the fields of aerospace, nuclear industry, transportation, ships, weapons and the like.

Description

technical field [0001] The invention relates to an aluminum-magnesium-silicon-scandium-zirconium alloy and a preparation method thereof, belonging to the technical field of metal material engineering. [0002] The new aluminum alloy products produced by this method have excellent corrosion resistance and weldability. Compared with traditional aluminum-magnesium-silicon alloys, they have higher strength and resistance to welding softening, and their tensile strength and yield strength are respectively increased by 20%. ~36% and 30%~51%, and the elongation is higher than 10%; the strength of the welded joint is 51%~54%, and the joint coefficient is increased from 0.8 to 0.9. The material product can be used for structural parts in the fields of aerospace, nuclear industry, transportation, ships, weapons and the like. Background technique [0003] The aluminum alloy containing the basic elements Mg and Si is the 6000 series aluminum alloy. This series of alloys has excellent c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/08C22C21/02C22C1/02C22F1/043C22F1/047
CPCC22C21/08C22C21/02C22C1/02C22C1/026C22F1/043C22F1/047
Inventor 钟立伟赵唯一于娟冯朝辉陆政陈军洲
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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