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Thermal treatment method for as-deposited 2219 aluminum alloy

A heat treatment method and technology of aluminum alloy, applied in the field of heat treatment of deposited 2219 aluminum alloy, can solve problems such as poor mechanical properties and element segregation, and achieve the effects of high production efficiency, accelerated diffusion, and simplified production process

Inactive Publication Date: 2016-07-06
HARBIN INST OF TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that existing deposited 2219 aluminum alloys have a coarse eutectic structure distributed along grain boundaries in a network shape, serious element segregation, and poor mechanical properties, and provide a deposited 2219 aluminum alloy heat treatment method

Method used

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  • Thermal treatment method for as-deposited 2219 aluminum alloy
  • Thermal treatment method for as-deposited 2219 aluminum alloy
  • Thermal treatment method for as-deposited 2219 aluminum alloy

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specific Embodiment approach 1

[0016] Specific Embodiment 1: In this embodiment, a heat treatment method for deposited 2219 aluminum alloy is carried out according to the following steps:

[0017] 1. The as-deposited 2219 aluminum alloy was homogenized and solution treated at 530°C for 20 hours to obtain an aluminum alloy after homogenization and solution treatment;

[0018] 2. Place the aluminum alloy after the homogenization and solid solution treatment in step 1 in water at room temperature for quenching treatment to obtain the aluminum alloy after the quenching treatment;

[0019] 3. aging the aluminum alloy after the quenching treatment in step 2 for 14-28 hours at 160-190° C. to obtain the aluminum alloy after the aging treatment;

[0020] 4. Cool the aluminum alloy after the aging treatment in step 3 in the air, and the process is completed.

[0021] This embodiment improves the conventional solution treatment process, keeps the material at a higher temperature for a long time, accelerates the diffu...

specific Embodiment approach 2

[0023] Embodiment 2: This embodiment differs from Embodiment 1 in that: the deposited 2219 aluminum alloy is obtained after additive manufacturing of 2219 aluminum alloy. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0024] Specific embodiment 3: The difference between this embodiment and specific embodiment 1 or 2 is that in step 3, the aluminum alloy after the step 2 quenching treatment is aged at 160°C for 20-28 hours, and the aging treatment is obtained. aluminum alloy. Others are the same as in the first or second embodiment.

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Abstract

The invention discloses a thermal treatment method for an as-deposited 2219 aluminum alloy, and relates to the thermal treatment method for the as-deposited 2219 aluminum alloy. In order to solve the problems that a current as-deposited 2219 aluminum alloy has a coarse eutectic structure which is in net distribution along a grain boundary, has severe element segregation and very poor mechanical performance, the thermal treatment method comprises the following steps: carrying out uniform solid-solution treatment on the as-deposited 2219 aluminum alloy for 20 hours at a temperature of 530 DEG C; then, putting the as-deposited 2219 aluminum alloy into water at the room temperature for carrying out quenching treatment, and carrying out ageing treatment on the as-deposited 2219 aluminum alloy for 14-28 hours at a temperature of 160-190 DEG C; and finally, cooling the as-deposited 2219 aluminum alloy in air, thereby completing the thermal treatment for the as-deposited 2219 aluminum alloy. The thermal treatment method can effectively reduce the coarse eutectic structure in the as-deposited 2219 aluminum alloy and can improve segregation; and meanwhile, equipment needed by thermal treatment is simple, the operation is convenient and the production efficiency is high. The thermal treatment method belongs to the material additive manufacturing field.

Description

technical field [0001] The invention relates to a heat treatment method of deposited 2219 aluminum alloy. Background technique [0002] In the process of additive manufacturing, metal materials often undergo complex thermal cycles, showing completely different microstructure characteristics from casting, forging, welding and other states; at the same time, due to the uneven distribution of the temperature field, it is easy to produce large The residual stress often deteriorates the mechanical properties of the deposited metal, making it difficult to meet the performance requirements. 2219 aluminum alloy is an important structural material widely used in the aerospace field. It has excellent comprehensive mechanical properties and can be strengthened by heat treatment. [0003] The as-deposited 2219 aluminum alloy has a coarse eutectic structure distributed along the grain boundary in a network shape, and the elements segregate seriously. Its mechanical properties are very p...

Claims

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Application Information

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IPC IPC(8): C22F1/057
CPCC22F1/057
Inventor 林三宝董博伦柏久阳杨春利范成磊
Owner HARBIN INST OF TECH
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