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Manufacturing method of heat-resistant aluminum alloy

A production method and aluminum alloy technology, which is applied in the field of heat-resistant aluminum alloy processing, can solve problems such as late start of research, achieve the effects of reducing precipitation rate, improving thermal stability, and reducing coarsening speed

Inactive Publication Date: 2020-12-15
GUANGDONG HONGBANG ALUMINUM METAL IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Heat-resistant aluminum alloys have broad application prospects, but limited to the late start of its research, there are still many technical problems in terms of material types, quality and process technology that need to be developed and researched. Therefore, the present invention proposes a heat-resistant aluminum alloy. How to make aluminum alloy

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0025] A method for preparing a heat-resistant aluminum alloy of the present invention comprises the following steps:

[0026] S01: The mass percentage of each element of the aluminum alloy raw material is Cu4.5%, Mg0.45%, Si0.2%, Fe0.25%, Mg0.8%, Ti0.15%, Zr0.12%, Ag0. 05%, Cr0.04%, Ce0.01%, Ni0.2%, Co0.1%, Y0.01%, the balance is Al and impurity 0.15%, according to the above mass percentages, weigh pure aluminum ingots, Magnesium ingot, pure zinc ingot, aluminum titanium boron master alloy and aluminum beryllium master alloy;

[0027] S02: Add the aluminum alloy raw material weighed in step S01 into the melting furnace for melting. During the melting process, use an electromagnetic stirrer to fully stir to obtain the aluminum alloy melt. After complete melting, take samples and analyze the chemical composition to see if the composition meets Control requirements, if the composition control requirements are not met, the composition control adjustment is carried out to obtain ...

Embodiment 2

[0032] A method for preparing a heat-resistant aluminum alloy of the present invention comprises the following steps:

[0033] S01: The mass percentage of each element of the aluminum alloy raw material is Cu5%, Mg0.5%, Si0.1%, Fe0.1%, Mg0.7%, Ti0.1%, Zr0.2%, Ag0.1% , Cr0.03%, Ce0.009%, Ni0.1%, Co0.09%, Y0.009%, the balance is Al and impurity 0.1%, according to the above mass percentage ingredients, respectively weigh pure aluminum ingots, magnesium ingots , pure zinc ingot, aluminum-titanium-boron master alloy and aluminum-beryllium master alloy;

[0034] S02: Put the metal weighed in step S01 into the melting furnace for melting, the melting temperature is 740°C, and the melting time is 4.5h. During the melting process, an electromagnetic stirrer is used to fully stir to obtain an aluminum alloy melt, which is to be completely melted Afterwards, take a sample and analyze the chemical composition to see if the composition control requirements are met. If the composition cont...

Embodiment 3

[0039] A method for preparing a heat-resistant aluminum alloy of the present invention comprises the following steps:

[0040] S01: The mass percentage of each element of the aluminum alloy raw material is Cu4.8%, Mg0.65%, Si0.05%, Fe0.15%, Mg0.6%, Ti0.05%, Zr0.18%, Ag0. 3%, Cr0.02%, Ce0.008%, Ni0.05%, Co0.07%, Y0.005%, the balance is Al and impurity 0.05%. Magnesium ingot, pure zinc ingot, aluminum titanium boron master alloy and aluminum beryllium master alloy;

[0041] S02: Put the metal weighed in step S01 into the melting furnace for melting, the melting temperature is 760°C, and the melting time is 5 hours. During the melting process, an electromagnetic stirrer is used to fully stir to obtain an aluminum alloy melt. After it is completely melted Sampling and analyzing the chemical composition to see if the composition control requirements are met, and if the composition control requirements are not met, the composition control adjustment is carried out to obtain the alu...

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Abstract

The invention belongs to the technical field of heat-resistant aluminum alloy machining, and discloses a manufacturing method of a heat-resistant aluminum alloy. According to the manufacturing methodof the heat-resistant aluminum alloy, through adding Ce element, the solubility is small and the diffusion speed is low in an aluminum matrix, binary and ternary intermetallic compounds with high volume fraction can be formed to play a dispersion strengthening role, one part of the intermetallic compounds is metastable phase formed by heat treatment transformation, and the other part of the intermetallic compounds is stable phase, so that the alloy has higher strength and thermal stability; through adding multi-alloy elements such as Ti, Fe, Co and Ni, the dissolution amount has an expansion trend under a high-temperature liquid state, so that the precipitation phase with larger volume fraction in the alloy is favorably generated, and suitable multi-element alloying also facilitates the improvement of the thermal stability of the alloy; and through adding the Zr element, not only can the precipitation rate of the precipitated phase be reduced, but also the coarsening speed can be reduced, and the thermal stability of the alloy is improved.

Description

technical field [0001] The invention relates to the technical field of processing heat-resistant aluminum alloys, in particular to a method for manufacturing heat-resistant aluminum alloys. Background technique [0002] The so-called heat-resistant aluminum alloy refers to an aluminum alloy that has sufficient oxidation resistance at high temperature and has the ability to resist plastic deformation (creep) and damage under long-term action of temperature and load (dynamic and static). Due to the advantages of good thermal conductivity and low density, heat-resistant aluminum alloys are widely used in aerospace, such as cylinder heads and pistons of aero-engines, aircraft skins, etc. [0003] Traditional high-strength aluminum alloys are mainly alloys of hypoeutectic composition, containing alloying elements with a solid solubility atomic fraction greater than 2% in the terminal solid solution, and the alloy is strengthened through the precipitation of intermetallic compound...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/16C22C21/14C22C1/03B22D11/06C22F1/057
CPCB22D11/0611C22C1/026C22C1/03C22C21/14C22C21/16C22F1/002C22F1/057
Inventor 闫俊杨镇江范卫忠高伟全朱荫荣郭转弟卢梓镜
Owner GUANGDONG HONGBANG ALUMINUM METAL IND CO LTD
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