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7075 aluminium alloy homogenizing treatment method

A technology of homogenization treatment and aluminum alloy, applied in the field of homogenization heat treatment of aluminum alloy, can solve the problems of poor homogenization effect, influence of alloy processing performance and alloy finished product performance, etc., and achieve the effect of strong diffusion ability and significant cost benefit.

Inactive Publication Date: 2017-10-20
HARBIN ZHONGFEI NEW TECH CO LTD
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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the homogenization effect of the existing 7075 aluminum alloy is poor after heat treatment, and after the homogenization is completed, the processing performance of the alloy and the performance of the finished alloy are affected, and then provide a 7075 aluminum alloy homogenization treatment method

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  • 7075 aluminium alloy homogenizing treatment method
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Embodiment Construction

[0038] Concrete technological process that the present invention relates to is as follows:

[0039] A kind of 7075 aluminum alloy homogenization treatment method comprises the following steps:

[0040] Step 1, first-level homogenization treatment;

[0041] Homogenize the 7075 aluminum alloy at a temperature range of 455°C to 485°C for 12h to 36h;

[0042] Step 2, secondary homogenization treatment;

[0043] Homogenize the 7075 aluminum alloy that has undergone primary homogenization treatment at 475°C for 2h to 8h;

[0044] Step 3, solid solution treatment;

[0045] The 7075 aluminum alloy that has undergone secondary homogenization treatment is heat-preserved in the temperature range of 460°C to 465°C for 1 hour for solid solution treatment.

[0046] Step 4, quenching treatment;

[0047] Quenching the 7075 aluminum alloy after solution treatment, the quenching medium is water, the quenching water temperature is less than 30°C, and the quenching transfer time is less than...

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Abstract

The invention discloses a homogenization treatment method for 7075 aluminum alloy, which belongs to the technical field of homogenization heat treatment of aluminum alloys. The invention aims to solve the problem that the homogenization effect of the existing 7075 aluminum alloy is poor after heat treatment, and the processability of the alloy and the performance of the finished alloy are affected after the homogenization is completed. The present invention comprises step 1, first level homogenization treatment; step 2, second level homogenization treatment; step 3, solid solution treatment; step 4, quenching treatment; step 5, quenching 7075 aluminum alloy at 115°C-125°C Insulate within the temperature range for 24h. The invention undergoes two-stage homogenization treatment to ensure a relatively large supersaturated solid solubility in a short period of time, and lays a good organizational foundation for subsequent solid solution, quenching and aging treatment. At the same time, the cost-effectiveness brought by the shorter homogenization holding time is also very significant.

Description

technical field [0001] The invention relates to a 7075 aluminum alloy homogenization treatment method, belonging to the technical field of aluminum alloy homogenization heat treatment. Background technique [0002] As an important structural material, functional material and energy-saving material, ultra-high-strength aluminum alloy has been widely used in aviation, aerospace, military and civilian fields, and it also represents the aerospace technology level of various countries. Therefore, the development and development of ultra-high-strength aluminum alloys have huge economic benefits and great social significance. 7075 aluminum alloy is a heat-treatable strengthened aluminum alloy with high alloying degree and high strength. Single-stage homogenization treatment is commonly used. Single-stage homogenization can prevent over-burning of low melting point elements in Al-Zn-Mg-Cu aluminum alloys , the heating temperature is generally low, and the homogenization effect is p...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22F1/053
CPCC22F1/053
Inventor 范长龙岳洪滨金光张春波高树增冯正海吕秀婷孙传超潘苏滨腾云成
Owner HARBIN ZHONGFEI NEW TECH CO LTD
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