金属热处理 ›› 2023, Vol. 48 ›› Issue (6): 121-125.DOI: 10.13251/j.issn.0254-6051.2023.06.022

• 工艺研究 • 上一篇    下一篇

固溶处理对Al-Zn-Cu-Mg-Zr-Ce合金组织性能的影响

郭丰佳1, 麻芳2, 肖富来1, 迟蕊1,2, 王经涛1, 孙宁1   

  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 烟台 265700;
    2.烟台南山学院 化学工程与技术学院, 山东 烟台 265713
  • 收稿日期:2022-12-30 修回日期:2023-05-07 发布日期:2023-08-11
  • 作者简介:郭丰佳(1982—),男,工程师,主要研究方向为铝合金材料成分设计、制备加工,E-mail:guofengjia@nanshan.com.cn
  • 基金资助:
    国家重点研发计划(2020YFB0311202);烟台市校地融合发展项目(2020XDRHXMXK08)

Effect of solution treatment on microstructure and properties of Al-Zn-Cu-Mg-Zr-Ce alloy

Guo Fengjia1, Ma Fang2, Xiao Fulai1, Chi Rui1,2, Wang Jingtao1, Sun Ning1   

  1. 1. National Engineering Research Center for Plastic Working of Aluminum Alloys, Shandong Nanshan Aluminum Co., Ltd., Yantai Shandong 265700, China;
    2. School of Chemical Engineering and Technology, Yantai Nanshan University, Yantai Shandong 265713, China
  • Received:2022-12-30 Revised:2023-05-07 Published:2023-08-11

摘要: 利用金相显微镜、扫描电镜及拉伸试验机等, 研究了固溶处理对Al-7.5Zn-1.5Cu-1.5Mg-0.12Zr-0.1Ce铝合金组织和性能的影响。结果表明, 在460~480 ℃温度范围, 保温30~120 min固溶处理工艺下, 经470 ℃×2 h单级固溶处理后, 试验合金出现了再结晶, 且第二相大部分溶解到基体中, 相比其它单级固溶处理工艺, 固溶效果最好, 时效处理后综合力学性能良好。经450 ℃×1 h+475 ℃×1 h双级固溶处理时, 因在低温时释放了形变能, 再结晶程度低, 固溶效果比单级固溶处理效果好, 时效处理后合金的综合力学性能更佳。

关键词: Al-Zn-Cu-Mg-Zr-Ce铝合金, 固溶处理, 力学性能, 微观组织

Abstract: Effect of solution treatment on microstructure and properties of Al-7.5Zn-1.5Cu-1.5Mg-0.12Zr-0.1Ce aluminum alloy was studied by means of metallographic microscope, scanning electron microscope and tensile testing machine. The results show that under the solution treatment process with temperature range of 460-480 ℃ and holding time of 30-120 min, after single stage solution treatment at 470 ℃ for 2 h, recrystallization occurs and most of the second phase dissolves into the matrix. Compared with other single stage solution treatment, the solution effect is the best, and the comprehensive mechanical properties is good after aging treatment. After 450 ℃×1 h+475 ℃×1 h two-stage solution treatment, due to the release of deformation energy at low temperature and low recrystallization degree, the solution effect is better than that of the single stage solution treatment, and the comprehensive mechanical properties of the alloy is better after aging treatment.

Key words: Al-Zn-Cu-Mg-Zr-Ce aluminum alloy, solution treatment, mechanical properties, microstructure

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