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Forging method for improving anisotropism of 6XXX aluminum alloy forge piece

An anisotropic, aluminum alloy technology, applied in the field of aluminum alloy thermal processing, can solve the problems of low strength and anisotropy of 6XXX aluminum alloy free forgings, and achieve the effect of improving comprehensive mechanical properties, reducing anisotropy, and being easy to implement

Active Publication Date: 2020-11-17
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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  • Abstract
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  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a forging method for improving the anisotropy of 6XXX aluminum alloy forgings, a nearly isotropic free forging method for improving the strength and toughness of 6XXX aluminum alloys, and to solve the problem of low strength of 6XXX aluminum alloy free forgings and problems in longitudinal and transverse directions. , The problem of serious anisotropy in high-direction and three-direction performance is suitable for the manufacture of aluminum alloy free forgings with a thickness of more than 60mm

Method used

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  • Forging method for improving anisotropism of 6XXX aluminum alloy forge piece

Examples

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Embodiment 1

[0028] The forging blank is φ360mm×480mm 6082 aluminum alloy. The specific forging steps are as follows:

[0029] 1) High-temperature forging: use the homogenized 6082 aluminum alloy forging billet for forging, the initial forging temperature of high-temperature forging is 460°C, the final forging temperature is 440°C, and the forging ratio is 8.4;

[0030] 2) Low-temperature forging: the initial forging temperature of low-temperature forging is 250°C, the final forging temperature is 235°C, and the forging ratio is 2.8;

[0031] 3) Solution treatment: solution temperature 550°C, holding time 4h, water quenching at room temperature.

[0032] 4) Forging at room temperature: the forging temperature at room temperature is 25°C, the final forging temperature is 20°C, rough deformation forging is carried out along the height direction, and the deformation amount is 20%. Forging size: φ700mm×90mm

Embodiment 2

[0034] The forging blank is φ300mm×670mm 6061 aluminum alloy. The specific forging steps are as follows:

[0035] 1) High-temperature forging: use homogenized 6061 aluminum alloy forging billets for forging, the initial forging temperature of high-temperature forging is 480°C, the final forging temperature is 468°C, and the forging ratio is 8;

[0036] 2) Low-temperature forging: the initial forging temperature of low-temperature forging is 240°C, the final forging temperature is 220°C, and the forging ratio is 2.6;

[0037] 3) Solution treatment: solution temperature is 550°C, holding time is 6h, water quenching at room temperature.

[0038] 4) Forging at room temperature: the forging temperature at room temperature is 23°C, the final forging temperature is 18°C, rough deformation forging is carried out along the height direction, and the deformation amount is 25%. Forging size: 500mm×450mm×150mm

[0039] The above-mentioned two embodiments are carried out T652 heat treatme...

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Abstract

The invention belongs to the technical field of design of mechanical structures, and relates to a forging method for improving the anisotropism of a 6XXX aluminum alloy forge piece. The forging methodcomprises the following specific forging formation steps of high-temperature forging, low-temperature forging, solution treatment and room-temperature cold deformation. The forging method for improving the anisotropism of the 6XXX aluminum alloy forge piece, disclosed by the invention, increases the recrystallization degree of the 6XXX aluminum alloy forge piece, reduces the strength and toughness difference among the longitudinal direction, the transverse direction and the height direction of the forge piece, improves the strength and the comprehensive mechanical properties of the 6XXX aluminum alloy free forge piece, and is suitable for manufacturing the 6XXX aluminum alloy free forge piece of which the thickness is 60 mm or above.

Description

technical field [0001] The invention belongs to the field of thermal processing of aluminum alloys, in particular to a forging method for improving the anisotropy of 6XXX aluminum alloy forgings. Background technique [0002] In recent years, with the integration of construction machinery and weaponry and the gradual increase in low-cost requirements, 6XXX aluminum alloy forgings with high performance and low cost are more and more widely used in the equipment manufacturing industry. The comprehensive performance requirements of 6XXX aluminum alloy forgings are also getting higher and higher, especially the problem of increasing the strength of 6XXX aluminum alloy forgings while reducing the serious anisotropy of 6XXX aluminum alloy free forgings. [0003] Patent 201711284318.7 discloses a forging method for 7000-series aluminum alloys. The two-stage stepped forging method mentioned is a free forging method of warm forging and then hot forging. The purpose is to reduce the n...

Claims

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Application Information

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IPC IPC(8): C22F1/047C22F1/05C22F1/043
CPCC22F1/043C22F1/047C22F1/05
Inventor 高文林孙进宝虞朝智刘惠陈军洲陆政
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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