High-efficient creep age forming method for aluminum alloy

A technology of creep aging forming and aluminum alloy, which is applied in the field of precision forming of aluminum alloy components, can solve problems such as unfavorable components closely fitting with the mold surface, not satisfying the principle of economy, and long creep aging time, etc., to achieve convenient The effect of synergistic control of shape and property, excellent mechanical properties, improvement of forming accuracy and manufacturing efficiency

Active Publication Date: 2018-09-04
CENT SOUTH UNIV
View PDF6 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this process can realize component forming on the basis of ensuring the performance of aluminum alloy products, effective deformation can only be achieved when the applied stress is large, and the creep temperature is high,

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High-efficient creep age forming method for aluminum alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 2219 aluminum alloy is subjected to solution treatment and water quenching in an air circulation resistance furnace to obtain an aluminum alloy plate; then cold rolled at room temperature to 80% of the deformation treatment to 8mm, and then the creep test is carried out in the creep machine. The aging temperature is 165°C, the creep time is 12h, and the creep stress is 150MPa. The tensile test is carried out after the plate is taken out and cooled at room temperature.

Embodiment 2

[0028] 2219 aluminum alloy is subjected to solution treatment and water quenching in an air circulation resistance furnace to obtain an aluminum alloy plate; then cold rolled at room temperature to 80% of the deformation treatment to 8mm, and then the creep test is carried out in the creep machine. The aging temperature is 165°C, the creep time is 12h, and the creep stress is 50MPa. The tensile test is carried out after the plate is taken out and cooled at room temperature.

Embodiment 3

[0030] 2219 aluminum alloy is subjected to solution treatment and water quenching in an air circulation resistance furnace to obtain an aluminum alloy plate; then cold rolled at room temperature to 80% of the deformation treatment to 8mm, and then the creep test is carried out in the creep machine. The aging temperature is 120°C, the creep time is 12h, and the creep stress is 150MPa. The tensile test is carried out after the plate is taken out and cooled at room temperature.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a high-efficient creep age forming method for an aluminum alloy. A hot-rolled aluminum alloy panel is subjected to solid solution and is then water-quenched, the quenched panel is placed in the middle and is subjected to cold deformation with the deformation being 20 to 90 percent at the room temperature until the required thickness is obtained, and then creep age formingis carried out. According to the high-efficient creep age forming method for the aluminum alloy provided by the invention, through cold deformation after alloy solid solution-quenching and before creep aging, a large number of dislocation, dislocation configuration and natural aging atom clusters are introduced into the alloy, and a part of dislocation and natural aging atom clusters can be used as a heterogeneous nucleation area of a precipitated phase, so that the precipitation of a main strengthening phase is promoted, the density of the precipitated phase is increased, the dimension is remarkably refined, and the creep rate and a mechanical property of creep aging are finally improve greatly. Through 20 to 90 percent of cold deformation, a large number of movable dislocation is introduced into the alloy, and the alloy creep quantity can be remarkably improved at lower temperature and stress through a creep age forming process, so that the age forming efficiency of the alloy is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of precision forming of aluminum alloy components, in particular to an aluminum alloy high-efficiency creep aging forming method. Background technique [0002] Aluminum and aluminum alloys have many advantages such as low density, high corrosion resistance, good electrical and thermal conductivity, etc., and are widely used in aerospace and rail transportation and other fields. The technology of large-scale aluminum alloy integral wall panels has been a research hotspot in the manufacture of key aerospace parts in recent years. In order to meet the requirements of high performance and light weight of aerospace components, creep aging forming technology has been gradually applied in recent years. Creep aging forming technology is suitable for the forming of integral ribs of age-strengthenable aluminum alloys and wall panels with variable thickness and complex shape structures, and has the characteristics of s...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C22F1/04
CPCC22F1/04
Inventor 刘春辉马培培马子尧湛利华
Owner CENT SOUTH UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap