Heat treatment method for additive manufacturing of 2219 Al alloy

A heat treatment method and additive manufacturing technology, applied in the directions of additive manufacturing, additive processing, and process efficiency improvement, can solve problems such as low efficiency, long heat treatment duration, waste of energy, etc., to achieve high efficiency, shorten production cycle, The effect of improving production efficiency

Active Publication Date: 2019-11-12
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method of heat treatment lasts lon

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  • Heat treatment method for additive manufacturing of 2219 Al alloy
  • Heat treatment method for additive manufacturing of 2219 Al alloy
  • Heat treatment method for additive manufacturing of 2219 Al alloy

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0023] The invention provides a heat treatment method for laser-TIG arc composite additive manufacturing of 2219 alloy, which realizes rapid manufacturing of high-strength and high-toughness aluminum alloy components. Proceed as follows:

[0024] 1. Laser-TIG arc composite additive manufacturing to form 2219 aluminum alloy components, the material is 2219 aluminum alloy welding wire with a diameter of 1.2mm. When forming, the laser power is 350W, the arc current is 130A, the scanning speed is 250mm / min, and the wire feeding speed is 1000mm / min.

[0025] 2. Heat the heat treatment furnace to 535°C at a heating rate of 10°C / min, put the 2219 aluminum alloy components into the heat treatment furnace, and keep it warm for 3 hours to complete the solution treatment.

[0026] 3. Take out the 2219 alloy component after solution treatment from the heat treatment furnace, put it in water at 20° C. for quenching treatment for a transfer time of less than 10 s, and obtain a quenched alu...

Embodiment 2

[0034] The invention provides a heat treatment method for laser-TIG arc composite additive manufacturing of 2219 alloy, which realizes rapid manufacturing of high-strength and high-toughness aluminum alloy components. Proceed as follows:

[0035] 1. Laser-TIG arc composite additive manufacturing to form 2219 aluminum alloy components, the material is 2219 aluminum alloy welding wire with a diameter of 1.8mm. When forming, the laser power is 400W, the arc current is 170A, the scanning speed is 450mm / min, and the wire feeding speed is 1500mm / min.

[0036] 2. Heat the heat treatment furnace to 540°C at a heating rate of 20°C / min, put the 2219 aluminum alloy components into the heat treatment furnace, and keep it warm for 1h to complete the solution treatment.

[0037] 3. Take out the 2219 alloy component after solution treatment from the heat treatment furnace, put it in water at 30° C. for quenching treatment for a transfer time of less than 10 s, and obtain a quenched aluminum...

Embodiment 3

[0042] The invention provides a heat treatment method for TIG arc additive manufacturing of 2219 alloy, which realizes rapid manufacturing of high-strength and high-toughness aluminum alloy components. Proceed as follows:

[0043] 1. TIG arc composite additive manufacturing forms 2219 aluminum alloy components, and the material is 2219 aluminum alloy welding wire with a diameter of 0.8mm. When forming, the arc current is 150A, the scanning speed is 350mm / min, and the wire feeding speed is 800mm / min.

[0044]2. Heat the heat treatment furnace to 500 °C at a heating rate of 15 °C / min, put the 2219 aluminum alloy components into the heat treatment furnace, and keep it warm for 5 hours to complete the solution treatment.

[0045] 3. Take out the 2219 alloy component after the solid solution treatment from the heat treatment furnace, put it in water at 10° C. for quenching treatment for a transfer time of less than 10 s, and obtain a quenched aluminum alloy component.

[0046] 4....

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Abstract

The invention discloses a heat treatment method for additive manufacturing of a 2219 Al alloy and belongs to the field of heat treatment for metal additive manufacturing. The heat treatment method comprises the following steps: putting a 2219 Al alloy formed component into a heat treatment furnace of 500-550 DEG C for 1-5 hours' heat preservation, so as to obtain an Al alloy component subjected tosolution treatment; next, putting the Al alloy component subjected to solution treatment into water of 10-30 DEG C for quenching treatment, wherein the quenching transfer time lasts 5-20 seconds; then, putting the Al alloy component subjected to quenching treatment into the heat treatment furnace, heating the Al alloy component along with the heat treatment furnace to 150-250 DEG C, and carryingout heat preservation for 4-10 hours; and finally, carrying out air cooling till the room temperature is reached. According to the heat treatment method disclosed by the invention, the heat treatmentprocess is simple and convenient to operate as well as relatively high in efficiency; meanwhile, the segregation of Cu element of the 2219 Al alloy component subjected to heat treatment can be improved, the quantity of coarse eutectic structures can be greatly reduced, and the strength and the toughness can be well improved; and the requirements of aerospace products for the high-strength and high-toughness 2219 Al alloy component can be met.

Description

technical field [0001] The invention belongs to the field of heat treatment of additive manufacturing, and relates to a heat treatment method for additive manufacturing of 2219 aluminum alloy. Background technique [0002] The 2-series (2219 aluminum alloy) aluminum alloy is widely used in metal structural parts in aerospace and other fields, and the required parts have increasingly complex structures and improved performance. Additive manufacturing technology can use 3D models to directly form complex-shaped structures, effectively shorten the processing cycle, improve product quality, and have huge market value and application prospects in the development of high-end equipment. [0003] Cu element segregation is serious in 2219 aluminum alloy components formed by additive manufacturing technology, and the coarse and network eutectic structure is distributed along the grain boundaries. Compared with the aluminum matrix, the eutectic structure has poor toughness. When subj...

Claims

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Application Information

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IPC IPC(8): C22F1/057B22F3/105B22F3/24B33Y10/00
CPCC22F1/057C22F1/002B22F3/24B33Y10/00B22F2003/248B22F10/00B22F10/25B22F10/36B22F10/64Y02P10/25
Inventor 吴东江刘德华马广义牛方勇
Owner DALIAN UNIV OF TECH
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