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Method for improving alloy performance by adding Sc into Al-Cu alloy, material and application

An al-cu and alloy technology, applied in the field of aluminum alloys, can solve problems such as poor mechanical properties, achieve the effects of improving heat resistance, promoting precipitation strengthening, and improving recrystallization resistance

Active Publication Date: 2022-08-02
NANJING INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] At the same time, the present invention provides a material obtained by adding Sc to the Al-Cu alloy to improve the properties of the alloy, which solves the technical defects of traditional Al-Cu alloy materials with poor mechanical properties

Method used

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  • Method for improving alloy performance by adding Sc into Al-Cu alloy, material and application
  • Method for improving alloy performance by adding Sc into Al-Cu alloy, material and application
  • Method for improving alloy performance by adding Sc into Al-Cu alloy, material and application

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Embodiment 1

[0033] A method for adding Sc to Al-Cu alloy to improve the properties of the alloy: comprising the following steps:

[0034] S1. Ingredients: prepare alloy raw materials according to the following alloy components and mass percentages, Cu is 4.5%, Sc is 0.15%, Mn is 0.02wt%, Fe is 0.05wt%, and the rest is Al;

[0035] Specifically, according to the calculation of smelting 5KG ingot, select Al-50Cu master alloy 0.45KG, Al-2Sc master alloy 0.375KG, and industrial pure aluminum 4.4KG;

[0036] S2. Melting: Add the prepared alloy raw materials to the resistance melting furnace for melting, and add Al-5Ti-1B grain refiner 20-30g to make the alloy composition more accurate;

[0037] S3. Casting: casting the smelted alloy melt into a mold, and cooling to obtain an alloy ingot;

[0038] S4. Peeling: remove the riser and uneven surface of the alloy ingot after casting, so that the surface of the alloy ingot is smooth;

[0039] S5. Double-stage homogenization treatment: double-stage ...

Embodiment 2

[0048] A method for adding Sc to Al-Cu alloy to improve the properties of the alloy: comprising the following steps:

[0049] S1. Ingredients: prepare alloy raw materials according to the following alloy components and mass percentages, Cu is 5%, Sc is 0.3%, Mn is 0.02wt%, Fe is 0.05wt%, and the rest is Al;

[0050] Specifically, according to the calculation of smelting 5KG ingot, select Al-50Cu master alloy 0.5KG, Al-2Sc master alloy 0.75KG, and industrial pure aluminum 4KG;

[0051] S2. Melting: add the prepared alloy raw material to the resistance melting furnace for melting, and add a purifying agent to make the alloy composition more accurate;

[0052] S3. Casting: casting the smelted alloy melt into a mold, and cooling to obtain an alloy ingot;

[0053] S4. Peeling: remove the riser and uneven surface of the alloy ingot after casting, so that the surface of the alloy ingot is smooth;

[0054] S5. Double-stage homogenization treatment: double-stage homogenization treatm...

Embodiment 3

[0063] A method for adding Sc to Al-Cu alloy to improve the properties of the alloy: comprising the following steps:

[0064] S1. Ingredients: prepare alloy raw materials according to the following alloy components and mass percentages, Cu is 6%, Sc is 0.5%, Mn is 0.02wt%, Fe is 0.05wt%, and the rest is Al;

[0065] Specifically, according to the calculation of smelting 5KG ingot, select Al-50Cu master alloy 0.6KG, Al-2Sc master alloy 1.25KG, and industrial pure aluminum 3.5KG;

[0066] S2. Melting: add the prepared alloy raw material to the resistance melting furnace for melting, and add a purifying agent to make the alloy composition more accurate;

[0067] S3. Casting: casting the smelted alloy melt into a mold, and cooling to obtain an alloy ingot;

[0068] S4. Peeling: remove the riser and uneven surface of the alloy ingot after casting, so that the surface of the alloy ingot is smooth;

[0069] S5. Double-stage homogenization treatment: double-stage homogenization trea...

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Abstract

The invention discloses a method for improving alloy performance by adding Sc into an Al-Cu alloy, which comprises the following steps: S1, proportioning: preparing alloy raw materials according to the following alloy components in percentage by mass: 2-6wt% of Cu, 0.01-0.5 wt% of Sc, less than or equal to 0.06 wt% of Mn, less than or equal to 0.11 wt% of Fe and the balance of Al; s2, smelting: melting the prepared alloy raw materials to obtain an alloy melt; and S3, casting: casting the alloy melt into a mold, and cooling to obtain an alloy cast ingot. The invention further discloses a material for improving the alloy performance by adding Sc into the Al-Cu alloy and application of the material as a high-hardness and high-temperature-resistant light material in the fields of aviation, aerospace, atomic energy, space technology and automobiles. The technical defect that a traditional Al-Cu alloy material is poor in mechanical property is overcome.

Description

technical field [0001] The invention relates to a method, material and application for adding Sc to Al-Cu alloy to improve the performance of the alloy, and belongs to the technical field of aluminum alloys. Background technique [0002] The rapid development of modern industry is not only a confirmation of the continuous improvement of the mechanical properties of materials, but also puts forward increasingly stringent requirements for the latter. For structural materials, industrial material selection not only continues the traditional concept of pursuing the characteristics of high strength, high ductility and high toughness, but also on the premise of leaving sufficient strength and safety design margins, structural lightweight design is also attracting more and more attention. The application of light alloy materials is the only way and the focus of the continuous pursuit of structural weight reduction, improvement and reduction of structural energy consumption, and in ...

Claims

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Application Information

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IPC IPC(8): C22C21/12C22F1/057C22C1/02
CPCC22C21/12C22F1/057C22F1/002C22C1/026
Inventor 翁瑶瑶丁立鹏贾志宏程翔翔陈家浩
Owner NANJING INST OF TECH
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