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Technological method for carrying out solid solution and aging thermal treatment on 6061 aluminum alloy

A technology of solid solution aging and process method, which is applied in the field of heat treatment of metal materials, can solve the problems of low current aging of aluminum alloys, achieve excellent mechanical properties, and reduce heat treatment energy consumption.

Active Publication Date: 2016-05-11
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, current treatment is mostly used in Cu-Cr-Zr and steel materials, and there are very few applications on aluminum alloy current aging.

Method used

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  • Technological method for carrying out solid solution and aging thermal treatment on 6061 aluminum alloy
  • Technological method for carrying out solid solution and aging thermal treatment on 6061 aluminum alloy
  • Technological method for carrying out solid solution and aging thermal treatment on 6061 aluminum alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The process method of electric current solution aging heat treatment of 6061 aluminum alloy specifically includes the following steps:

[0032] Step 1, Homogenization:

[0033] Put the as-cast 6061 aluminum alloy round bar with a size of Φ160×580mm into the air circulation heat treatment furnace, feed 500A direct current through copper fixtures to both ends of the ingot, heat it to 550°C, keep it warm for 8 hours, stop the current flow, Cool the furnace to room temperature in air to obtain an ingot;

[0034] Step 2, hot extrusion:

[0035] Put the ingot into the heating furnace, preheat it to 500°C, keep it warm for 2 hours, take it out of the furnace and carry out extrusion molding to obtain a billet with a size of 10×200×12000mm, wherein the extrusion speed is 3.0mm / s and the extrusion ratio 10, the extruded billet is air-cooled and cut;

[0036] Step 3, solution treatment:

[0037] Put the billet with the size of 10×20×580mm into the air circulation heat treatmen...

Embodiment 2

[0041] The process method of electric current solution aging heat treatment of 6061 aluminum alloy specifically includes the following steps:

[0042] Step 1, Homogenization:

[0043] Put the as-cast 6061 aluminum alloy round bar with a size of Φ160×580mm into the air circulation heat treatment furnace, feed 500A direct current through copper fixtures to both ends of the ingot, heat it to 550°C, keep it warm for 10h, stop the current flow, Cool the furnace to room temperature in air to obtain an ingot;

[0044] Step 2, hot extrusion:

[0045] Put the ingot into the heating furnace, preheat it to 500°C, keep it warm for 2 hours, take it out of the furnace and carry out extrusion molding to obtain a billet with a size of 10×200×12000mm, wherein the extrusion speed is 3.0mm / s and the extrusion ratio 10, the extruded billet is air-cooled and cut;

[0046] Step 3, solution treatment:

[0047] Put the square billet with the size of 10×20×580mm into the air circulation heat treat...

Embodiment 3

[0051] The process method of electric current solution aging heat treatment of 6061 aluminum alloy specifically includes the following steps:

[0052]Step 1, Homogenization:

[0053] Put the as-cast 6061 aluminum alloy round bar with a size of Φ160×580mm into the air circulation heat treatment furnace, feed 500A direct current through copper fixtures to both ends of the ingot, heat it to 560°C, keep it warm for 12h, stop the current flow, Cool the furnace to room temperature in air to obtain an ingot;

[0054] Step 2, hot extrusion:

[0055] Put the ingot into the heating furnace, preheat it to 500°C, keep it warm for 2 hours, take it out of the furnace and carry out extrusion molding to obtain a billet with a size of 10×200×12000mm, wherein the extrusion speed is 3.0mm / s and the extrusion ratio 10, the extruded billet is air-cooled and cut;

[0056] Step 3, solution treatment:

[0057] Put the billet with the size of 10×20×580mm into the air circulation heat treatment fur...

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Abstract

The invention discloses a technological method for carrying out solid solution and ageing treatment on a 6061 aluminum alloy, and belongs to the technical field of metal material thermal treatment. The technological method specifically comprises the following steps: (1) homogenizing treatment: carrying out homogenizing treatment and carrying out air-cooling to the room temperature while providing current to a 6061 aluminum alloy cast ingot; (2) thermal extrusion; (3) solid solution treatment: carrying out solid solution treatment and carrying out water-cooling at the room temperature while providing current to square billet; and (4) ageing treatment: carrying out the ageing treatment while providing current to the square billet. According to the technological method, the current intensity, the heating temperature and the heat preservation time of the homogenizing treatment, the solid solution treatment and the ageing treatment are reasonably controlled, so that a workpiece with excellent mechanical properties is finally obtained on the premise of remarkably reducing energy consumption of the thermal treatment, and therefore, the technological method is an aluminum alloy continuous solid solution and ageing treatment technological method which is suitable for quickly heating and reducing energy consumption, and is applied to industrial production.

Description

technical field [0001] The invention belongs to the technical field of heat treatment of metal materials, and in particular relates to a process method for current solution aging heat treatment of 6061 aluminum alloy. Background technique [0002] Aluminum alloys are mainly strengthened by aging precipitation, and the solution treatment before aging has an important influence on the subsequent aging process. Therefore, the purpose of improving the strengthening effect is often achieved by increasing the supersaturation degree of the alloy solid solution and increasing the number of aging precipitates. . The solid solution temperature of the traditional deformed structure is much lower than the non-equilibrium eutectic point, resulting in the incomplete dissolution of the coarse compound phase, which will have an adverse effect on the overall performance of the alloy. The degree of solute supersaturation obtained by alloy quenching is related to both the composition of the a...

Claims

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Application Information

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IPC IPC(8): C22F1/04
CPCC22F1/04
Inventor 何立子朱颖晖崔建忠郭雅萍
Owner NORTHEASTERN UNIV
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