Thermomechanical treatment method of 6000-series aluminum alloy

A technology of deformation heat treatment and aluminum alloy, which is applied in the field of deformation heat treatment of aluminum alloy to achieve the effect of eliminating the sensitivity of intergranular corrosion
CN103305779AInactive Publication Date: 2013-09-18CHANGZHOU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHANGZHOU UNIV
Publication Date
2013-09-18
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention belongs to the technical field of an aluminum alloy thermomechanical treatment, which is particularly suitable for a 6000-series aluminum alloy. The invention provides a thermomechanical treatment method of a 6000-series aluminum alloy, aiming at the defect that in the prior art, the peak value aging state (T6) of the 6000-series aluminum alloy is high in strength and the intercrystalline corrosion is severe, so that not only the intensity of the 6000-series aluminum alloy can be improved greatly, but also the intercrystalline corrosion sensitivity is eliminated. The technical scheme provided by the invention particularly comprises the following step of: treating the 6000-series aluminum alloy sequentially in the following steps of: (1) solution treatment; (2) quenching; (3) pre-aging; (4) cold rolling and deforming; and (5) re-aging.
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Description

technical field

[0001] The invention belongs to the technical field of deformation heat treatment of aluminum alloys, and is especially suitable for 6000 series aluminum alloys. Background technique

[0002] 6000 series aluminum alloys are age-strengthened alloys, such as 6061, 6056, 6082, 6013, 6063, etc., which have the characteristics of low density, medium strength, good weldability and formability, and are widely used in aerospace, transportation, construction and machinery Manufacturing and other industries. In order to obtain high strength, T6 treatment (peak aging) is often carried out in the industry, in order to form high-density nanoscale precipitated phases in the aluminum matrix to the greatest extent, such as GP regions, β″, β′, Q′, etc., so as to obtain the highest Alloy strength. However, during T6 treatment, on the one hand, the grain boundary precipitates are distributed in a continuous state, and form a continuous corrosion micro-battery together with the...

Claims

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