A preparation method of high-strength deformed aluminum alloy based on severe plastic deformation

A technology for severe plastic deformation and deformation of aluminum alloys, applied in the field of aluminum alloy processing, can solve the problems of unfavorable alloy strength and toughness, weakening of hot working effect, fine grain growth, etc., to achieve fine grain size, improve processing performance, and reduce content Effect
CN110592502BActive Publication Date: 2021-05-18江苏江南创佳型材有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
江苏江南创佳型材有限公司
Publication Date
2021-05-18

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Abstract

The invention discloses a method for preparing a high-strength deformed aluminum alloy based on severe plastic deformation. The steps of the method are: A. cutting a green body from an aluminum alloy ingot; In the press die, the equal-channel angular extrusion process is carried out continuously with multi-temperature steps that gradually increase in temperature, and the severe plastic deformation technology is used to achieve enhanced solution treatment, and after the end of the water quenching treatment, a supersaturated solid solution block extrusion billet is obtained; C, cutting The alloy rod whose length direction is parallel to the direction of equal-channel angular extrusion is produced; the alloy rod is subjected to conventional hot extrusion processing and aging treatment to obtain high-strength deformed aluminum alloy. The present invention utilizes stage-by-stage severe plastic deformation of gradual heating to realize enhanced solid solution treatment, effectively promotes the dissolution of the second phase, and obtains a single-phase solid solution alloy with fine grain size, high-density defects, and high supersaturation, and then through thermal processing And aging treatment promotes the uniform precipitation of nano-precipitated phases, and obtains high-strength deformed aluminum alloys.
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Description

technical field

[0001] The invention belongs to the technical field of aluminum alloy processing, and specifically relates to a method for preparing a high-strength deformed aluminum alloy based on severe plastic deformation, which adopts severe plastic deformation to achieve enhanced solid solution effect, and combines subsequent thermal processing to prepare precipitated phase reinforcement. Background technique

[0002] Aluminum alloy is one of the most commonly used metal materials in the fields of aircraft, automobiles, rail transit and 3C electronic products, especially 2XXX series, 6XXX series and 7XXX series aluminum alloys are more widely used in the above fields. The strength of these three series of aluminum alloys is usually high, and the main strengthening methods include solid solution strengthening, fine grain strengthening, deformation strengthening and second phase strengthening. In addition, these three alloys are all heat treatable aluminum alloys, that is...

Claims

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