含稀土Ce 7055铝合金的固溶时效处理

doi:10.13251/j.issn.0254-6051.2025.02.024

金属热处理 ›› 2025, Vol. 50 ›› Issue (2): 155-159.DOI: 10.13251/j.issn.0254-6051.2025.02.024

含稀土Ce 7055铝合金的固溶时效处理

房洪杰¹, 杨喻曾², 张智楷¹, 闵红¹, 刘振东¹, 沈雨欣¹

1.枣庄学院机电工程学院, 山东枣庄 277160;
2.临沂大学化学化工学院, 山东临沂 276000

收稿日期:2024-08-22 修回日期:2024-12-13 发布日期:2025-04-10
通讯作者: 闵红,副教授,硕士,E-mail:13863297877@126.com
作者简介:房洪杰(1977—),男,副教授,博士,主要研究方向为高性能铝合金成分设计及制备关键技术,E-mail:h.j.fang@163.com。
基金资助:
国家重点研发计划(2020YFB0311202);枣庄学院博士基金(1020723)

Solution treatment and aging of 7055 aluminum alloy containing Ce

Fang Hongjie¹, Yang Yuzeng², Zhang Zhikai¹, Min Hong¹, Liu Zhendong¹, Shen Yuxin¹

1. School of Mechanical and Electrical Engineering, Zaozhuang University, Zaozhuang Shandong 277160, China;
2. School of Chemistry and Chemical Engineering, Linyi University, Linyi Shandong 276000, China

Received:2024-08-22 Revised:2024-12-13 Published:2025-04-10

摘要/Abstract

摘要： 在实验室制备了含0.1%Ce的7055铝合金薄板,对其进行不同工艺的固溶处理(固溶温度465、470、475和480 ℃,保温时间20、40和60 min)和时效处理(时效温度120 ℃,保温时间0~36 h),利用金相显微镜、扫描电镜、透射电镜和电子万能试验机,观察微观组织和测试力学性能。结果表明,合金冷轧板存在470.83 ℃的低熔点第二相,为避免发生过烧导致板材力学性能下降,固溶温度的选取不可超过该温度。该合金的最佳固溶时效工艺为470 ℃×60 min+120 ℃×22 h,该工艺下抗拉强度为577 MPa,屈服强度为547 MPa,伸长率为9.47%。

关键词: 7055铝合金, 固溶处理, 时效处理, 力学性能

Abstract: A 7055 aluminum alloy sheet containing 0.1%Ce was prepared in the laboratory, and different solid solution treatments (solution temperature of 465, 470, 475, and 480 ℃, holding time of 20, 40, and 60 min) and aging treatments (aging temperature of 120 ℃, holding time of 0-36 h) were carried out, and the microstructure and mechanical properties were observed and tested by using metallographic microscope, scanning electron microscope, transmission electron microscope, and electronic universal testing machine. The results indicate that there is a low melting point second phase at 470.83 ℃ in the cold-rolled alloy sheet. To avoid burning and reduce the mechanical properties of the sheet, the selection of the solid solution temperature should not exceed this temperature. The optimal solid solution and aging process for the alloy is 470 ℃×60 min+120 ℃×22 h. Under this process, the tensile strength is 577 MPa, the yield strength is 547 MPa, and the elongation is 9.47%.

Key words: 7055 aluminum alloy, solution treatment, aging treatment, mechanical properties

中图分类号:

TG156.9

房洪杰, 杨喻曾, 张智楷, 闵红, 刘振东, 沈雨欣. 含稀土Ce 7055铝合金的固溶时效处理[J]. 金属热处理, 2025, 50(2): 155-159.

Fang Hongjie, Yang Yuzeng, Zhang Zhikai, Min Hong, Liu Zhendong, Shen Yuxin. Solution treatment and aging of 7055 aluminum alloy containing Ce[J]. Heat Treatment of Metals, 2025, 50(2): 155-159.

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含稀土Ce 7055铝合金的固溶时效处理

Solution treatment and aging of 7055 aluminum alloy containing Ce

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