Thermo-mechanical treatment method of aluminum alloy
A deformation heat treatment, aluminum alloy technology, applied in the field of aluminum alloy material manufacturing, can solve the problems of low strength of 6000 series aluminum alloy, sensitive to intergranular corrosion, affecting the life and safety of aircraft, etc., and achieve the effect of high extrusion deformation strengthening effect.
Inactive Publication Date: 2017-01-11
张家港市丰乐汽车设备有限公司
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However, so far, the proportion of 6000-series aluminum alloys used in aircraft manufacturing is significantly lower than that of 7000-series and 2000-series aluminum alloys
The primary reason for this phenomenon is the relatively low strength of 6000 series aluminum alloys.
Although artificially aged to the peak state (T6), th
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[0020] The present invention is further illustrated by the following examples: According to the following examples, the present invention can be better understood. However, those skilled in the art can easily understand that the specific material ratios, process conditions and results described in the examples are only used to illustrate the present invention, and should not and will not limit the present invention described in the claims.
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Abstract
The invention discloses a thermo-mechanical treatment method of an aluminum alloy. The 6061 aluminum alloy is used as a raw material, solution treatment and water quenching under the conditions of 550 DEG C and 1 h, underaging under the conditions of 180 DEG C and 2 h, 85% rolling reduction cold rolling and low-temperature reaging under the conditions of 100 DEG C and 48 h are carried out, and the aluminum alloy high in strength and intergranular corrosion resisting performance is obtained. The tensile strength of the aluminum alloy is 656 MPa, the yield strength of the aluminum alloy is 626 MPa, the elongation at break of the aluminum alloy is 7.7%, and the uniform elongation of the aluminum alloy is 5.4%.
Description
technical field [0001] The application belongs to the field of aluminum alloy material manufacturing, and in particular relates to a deformation heat treatment method of aluminum alloy. Background technique [0002] Age-hardening aluminum alloy has low density, high specific strength, good corrosion resistance and plastic formability, and is an important lightweight structural material widely used in aircraft manufacturing, mainly including ultra-high strength 7000 series Al-Zn-Mg-Cu alloy (500-700MPa), high-strength 2000 series Al-Cu-Mg alloy (400-500MPa) and medium-strength 6000 series Al-Mg-Si-Cu alloy (300-400MPa), the representative alloy grades are 7075, 2024 and 6056. Compared with the 7000 series and 2000 series aluminum alloys, although the 6000 series aluminum alloys have the advantages of low material density and cost, ingot formability, plastic processing performance, excellent surface treatment performance and low tendency to stress corrosion cracking. However...
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Inventor 赵英
Owner 张家港市丰乐汽车设备有限公司
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