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Aluminum alloy material and preparation method and application thereof

An aluminum alloy material and technology of aluminum alloy, applied in the field of aluminum material, can solve the problem that the room temperature strength and high temperature strength of aluminum alloy are difficult to balance.

Active Publication Date: 2022-04-12
HUNAN RARE EARTH METAL MATERIAL RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the development of aerospace technology, it is difficult to balance the room temperature strength and high temperature strength of traditional aluminum alloys, so it is necessary to develop an aluminum alloy material that balances room temperature strength and high temperature strength

Method used

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  • Aluminum alloy material and preparation method and application thereof
  • Aluminum alloy material and preparation method and application thereof
  • Aluminum alloy material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0098] 1) Ingredients

[0099] Prepare raw materials according to the following mass percentages:

[0100] Cu 8.24wt%, Ni 3.29wt%, Mn 0.69wt%, Ti 0.17wt%, Sc 0.25wt%, Ce0.18wt%, Zr 0.10wt%, Be 0.015wt%, Co 0.01wt%, Mo 0.01wt%, The total amount of impurity elements is less than 0.15wt%, and the balance is Al;

[0101] 2) Melting

[0102] The crucible and pure Al, Al-Cu master alloy, Al-Ce master alloy, Al-Sc master alloy, Al-Ni master alloy, Al-Mn master alloy, Al-Zr master alloy, Al-Co master alloy, Al- After the Be master alloy, Al-Mo master alloy and Al-Ti master alloy were preheated at 200°C for 2 h, the Al-Cu master alloy, pure Al, Al-Ce master alloy, Al-Ni master alloy, Al-Mn Put the master alloy, Al-Co master alloy, Al-Be master alloy and Al-Mo master alloy into the crucible; when the temperature of the well-type resistance furnace reaches 640 ° C ~ 730 ° C, feed high-purity argon (≥99.999%), Put the crucible with raw materials into the resistance furnace; when the o...

Embodiment 2

[0109] Basically the same as Example 1, the difference is that step 1) batching and step 4) solution treatment and aging treatment are different, specifically as follows:

[0110] 1) Ingredients

[0111] Prepare raw materials according to the following mass percentages:

[0112] Cu 7.65wt%, Ni 2.49wt%, Mn 0.73wt%, Ti 0.14wt%, Sc 0.17wt%, Ce0.03wt%, Zr 0.07wt%, Be 0.02wt%, Co 0.013wt%, Mo 0.01wt%, The total amount of impurity elements is less than 0.15wt%, and the balance is Al;

[0113] 2) and 3) with embodiment 1;

[0114] 4) Solution treatment and aging treatment

[0115] The aluminum alloy ingot was solution treated at 525° C. for 12 hours, water quenched at room temperature, and then subjected to isothermal aging treatment at 175° C. for 6 hours to obtain an aluminum alloy material.

[0116] The microstructure figure of the aluminum alloy material that embodiment 2 obtains is as follows figure 2 As shown, the intragranular precipitation of the aluminum alloy material...

Embodiment 3

[0118] Basically the same as Example 1, the difference is that step 1) batching and step 4) solution treatment and aging treatment are different, specifically as follows:

[0119] 1) Ingredients

[0120] Prepare raw materials according to the following mass percentages:

[0121] Cu 7.5wt%, Ni 3.4wt%, Mn 0.8wt%, Ti 0.18wt%, Sc 0.15wt%, Ce 0.1wt%, Zr 0.12wt%, Be 0.01wt%, Co 0.03wt%, Mo 0.03wt%, The total amount of impurity elements is less than 0.15wt%, and the balance is Al;

[0122] 2) and 3) with embodiment 1;

[0123] 4) Solution treatment and aging treatment

[0124] The aluminum alloy ingot was solution treated at 500° C. for 15 hours, water quenched at room temperature, and then subjected to isothermal aging treatment at 180° C. for 6 hours to obtain an aluminum alloy material.

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Abstract

The invention relates to an aluminum alloy material and a preparation method and application thereof, and the aluminum alloy material comprises the following components in percentage by mass: 7.0 wt% to 9.0 wt% of Cu, 1.0 wt% to 3.5 wt% of Ni, 0.6 wt% to 1.1 wt% of Mn, 0.1 wt% to 0.2 wt% of Ti, 0.1 wt% to 0.3 wt% of Sc, 0.03 wt% to 0.20 wt% of Ce, 0.05 wt% to 0.15 wt% of Zr, 0.01 wt% to 0.03 wt% of Be, 0.01 wt% to 0.03 wt% of Co, 0.01 wt% to 0.03 wt% of Mo and the balance of Al. All the elements of the aluminum alloy material are matched according to a specific proportion and have a synergistic effect, so that the aluminum alloy material has high tensile strength under the room temperature condition and the high temperature condition.

Description

technical field [0001] The invention relates to the technical field of aluminum materials, in particular to an aluminum alloy material and its preparation method and application. Background technique [0002] Cast aluminum alloy has the advantages of low density, high corrosion resistance, high specific strength, excellent casting performance and welding performance, and is widely used in aviation, aerospace, and navigation industries. Cast aluminum alloys for aerospace mainly include ZL1xx series (Al-Si series), ZL2xx series (Al-Cu series), ZL3xx series (Al-Mg series), ZL4xx series (Al-Zn series), among which the most widely used It is ZL1xx series and ZL2xx series alloys, accounting for more than 95% of the total amount. However, with the development of aerospace technology, it is difficult to balance the room temperature strength and high temperature strength of traditional aluminum alloys, so it is necessary to develop an aluminum alloy material that balances room tempe...

Claims

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Application Information

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IPC IPC(8): C22C21/12C22F1/057C22C1/03
Inventor 童璨瑜姚茂海吕晶熊爱虎罗天纵李杰
Owner HUNAN RARE EARTH METAL MATERIAL RES INST
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