Effect of single-stage solution treatment on microstructure and properties of Al-Zn-Mg-Cu alloy thick plate

doi:10.13251/j.issn.0254-6051.2023.11.038

Abstract

Abstract: Microstructure and properties of Al-Zn-Mg-Cu aluminum alloy after different single-stage solid solution processes were characterized by means of OM, SEM, DSC, XRD, tensile test and conductivity test. The effects of different solution processes on the microstructure and properties of the alloy were studied. The results show that the second phase in the 7055 aluminum alloy plate dissolves and the retained content of the second phase in the matrix gradually decreases when the alloy solution treated within the range of 475-482 ℃. Meanwhile, the conductivity of the alloy significantly decreases. The strength shows a trend of first increasing and then decreasing. Moreover, the alloy exhibits excellent comprehensive mechanical properties, when solution treated at 479 ℃ for 1 h, the yield strength and the tensile strength of the alloy reach 377 MPa and 544 MPa, respectively.

Key words: Al-Zn-Mg-Cu alloy, solution treatment, microstructure, properties

CLC Number:

TG146.2⁺1

Sun Ning, Wang Zhidong, Wang Jingtao, Chi Rui, Guo Fengjia. Effect of single-stage solution treatment on microstructure and properties of Al-Zn-Mg-Cu alloy thick plate[J]. Heat Treatment of Metals, 2023, 48(11): 235-240.

References

[1]李彩琼, 孔德斌, 余鑫祥. 固溶处理对Al-8.8Zn-2.0Mg-2.1Cu-0.1Zr-0.1Ce合金组织性能的影响[J]. 金属热处理, 2021, 46(6): 53-59.
Li Caiqiong, Kong Debin, Yu Xinxiang, et al. Effect of solution treatment on microstructure and properties of Al-8.8Zn-2.0Mg-2.11Cu-0.1Zr-0.1Ce alloy[J]. Heat Treatment of Metals, 2021, 46(6): 53-59.
[2]Andreatta F, Terryn H, Wit J H. Effect of solution heat treatment on galvanic coupling between intermetallics and matrix in AA7075-T6[J]. Corrosion Science, 2003, 45(8): 1733-1746.
[3]范云强, 黄树晖, 李志辉, 等. Al-Zn-Mg-Cu合金多道次热变形及固溶处理过程中的晶粒演变[J]. 航空材料学报, 2017, 37(2): 1-6.
Fan Yunqiang, Huang Shuhui, Li Zhihui, et al. Grain evolution in process of multi-pass hot deformation and solution heat treatment of Al-Zn-Mg-Cu aluminum alloy[J]. Journal of Aeronautical Materials, 2017, 37(2): 1-6.
[4]王文波. 固溶冷却路径对7055铝合金组织与性能的影响规律[D]. 呼和浩特: 内蒙古工业大学, 2021.
[5]岳庚新. 7055铝合金的双级固溶处理工艺研究[J]. 天津冶金, 2021(1): 31-34.
Yue Gengxin. Study on two-stage solid solution treatment process of 7055 aluminum alloy[J]. Tianjin Metallurgy, 2021(1): 31-34.
[6]Choi S, Jeon J, Seo N, et al. Effect of heating rate on microstructure and mechanical properties in Al 7055[J]. Metals and Materials International, 2021, 27(3): 449-455.
[7]Meng X, Zhang D, Zhang W, et al. Influence of solution treatment on microstructures and mechanical properties of a naturally-aged Al-27Zn-1.5Mg-1.2Cu-0.08Zr aluminum alloy[J]. Materials Science and Engineering A, 2021, 802: 140623.
[8]Yang X B, Chen J H, Liu J Z, et al. Spherical constituent particles formed by a multistage solution treatment in Al-Zn-Mg-Cu alloys[J]. Materials Characterization, 2013, 83: 79-88.
[9]Wolverton C. Crystal structure and stability of complex precipitation phase in Al-Cu-Mg-Si and Al-Zn-Mg alloys[J]. Acta Materialia, 2001, 49(16): 3129-3142.
[10]王孝国, 李秋书, 杨光印, 等. 固溶时效对7K01铝合金组织和硬度及电导率的影响[J]. 特种铸造及有色合金, 2019, 39(5): 480-482.
Wang Xiaoguo, Li Qiushu, Yang Guangyin, et al. Effects of solution and ageing treatment on microstructure, micro-hardness and electrical conductivity of 7K01 Al alloy[J]. Special Casting and Nonferrous Alloys, 2019, 39(5): 480-482.
[11]韩成府, 岑少起, 路王珂, 等. 固溶处理对7075铝合金组织和力学性能的影响[J]. 特种铸造及有色合金, 2017, 37(2): 201-204.
Han Chengfu, Cen Shaoqi, Lu Wangke, et al. Influences of solution treatment on microstructure and mechanical properties of 7075 aluminum alloy[J]. Special Casting and Nonferrous Alloys, 2017, 37(2): 201-204.
[12]叶拓, 唐明, 刘吉兆, 等. 固溶温度对7075铝合金板材组织与力学性能的影响[J]. 金属热处理, 2022, 47(3): 119-123.
Ye Tuo, Tang Ming, Liu Jizhao, et al. Effect of solution temperature on microstructure and mechanical properties of 7075 aluminum alloy sheet[J]. Heat Treatment of Metals, 2022, 47(3): 119-123.

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