不同退火工艺对5182铝合金板材表面质量的影响

doi:10.13251/j.issn.0254-6051.2024.04.024

金属热处理 ›› 2024, Vol. 49 ›› Issue (4): 150-156.DOI: 10.13251/j.issn.0254-6051.2024.04.024

不同退火工艺对5182铝合金板材表面质量的影响

孙宁^1,2, 王经涛^1,2, 李涛¹, 王芝东¹, 迟蕊¹, 徐志远¹, 杨立民¹, 郭丰佳¹

1.山东南山铝业股份有限公司国家铝合金压力加工工程技术研究中心, 山东龙口 265713;
2.烟台南山学院材料科学与工程学院, 山东龙口 265713

收稿日期:2023-11-13 修回日期:2024-03-06 出版日期:2024-04-25 发布日期:2024-05-27
作者简介:孙宁(1995—),女,硕士,主要研究方向为铝合金汽车板成分设计、热加工、热处理等,E-mail:ningsun95@163.com.cn

Effect of different annealing processes on surface quality of 5182 aluminum alloy sheet

Sun Ning^1,2, Wang Jingtao^1,2, Li Tao¹, Wang Zhidong¹, Chi Rui¹, Xu Zhiyuan¹, Yang Limin¹, Guo Fengjia¹

1. National Engineering Research Center for Plastic Working of Aluminium Alloys, Shandong Nanshan Aluminium Co., Ltd., Longkou Shandong 265713, China;
2. School of Materials Science and Engineering, Yantai Nanshan University, Longkou Shandong 265713, China

Received:2023-11-13 Revised:2024-03-06 Online:2024-04-25 Published:2024-05-27

摘要/Abstract

摘要： 通过阳极氧化覆膜、拉伸试验系统地研究了不同退火工艺处理的5182铝合金板材的显微组织及拉伸性能。结果表明,退火时间越长,板材再结晶晶粒尺寸越大,大小晶粒的变形不同步会导致屈服平台缩短;提高退火温度可降低基体中的位错密度,水冷可阻碍溶质原子向位错扩散,降低溶质原子与位错的交互作用,有利于消除板材冲压过程中的吕德斯带。随着退火温度的提高,5182铝合金板材的抗拉强度和屈服强度均降低,且在相同温度退火时,炉冷合金板材的强度低于空冷和水冷,伸长率则变化不明显。

关键词: 5182铝合金板材, 吕德斯带, 位错, 钉扎, 脱钉

Abstract: Microstructure and tensile properties of 5182 aluminum alloy sheets treated under different annealing processes through anodized coating and tensile testing were systematicly studied. The results show that the longer the annealing time is, the larger the grain size of the sheet becomes, and the unsynchronized deformation of the grain size can lead to a shortened yield plateau. The dislocation density in the matrix can be reduced by increasing the annealing temperature. Water cooling can hinder the diffusion of solute atoms towards dislocations, reduce the interaction between solute atoms and dislocations, which helps eliminate the Lüders band during the sheet stamping process. With the increase of annealing temperature, the tensile strength and yield strength of 5182 aluminum alloy sheet is decreased, and when annealed at the same temperature, the strength of furnace cooled alloy sheet is lower than that of air cooled and water cooled, while the change in elongation is not significant.

Key words: 5182 aluminum alloy sheet, Luders band, dislocation, pinning, unpinning

中图分类号:

TG146.2⁺1

孙宁, 王经涛, 李涛, 王芝东, 迟蕊, 徐志远, 杨立民, 郭丰佳. 不同退火工艺对5182铝合金板材表面质量的影响[J]. 金属热处理, 2024, 49(4): 150-156.

Sun Ning, Wang Jingtao, Li Tao, Wang Zhidong, Chi Rui, Xu Zhiyuan, Yang Limin, Guo Fengjia. Effect of different annealing processes on surface quality of 5182 aluminum alloy sheet[J]. Heat Treatment of Metals, 2024, 49(4): 150-156.

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不同退火工艺对5182铝合金板材表面质量的影响

Effect of different annealing processes on surface quality of 5182 aluminum alloy sheet

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