Comparison on microstructure and properties of 6016 aluminum alloy sheet with different coils number of furnace charging

doi:10.13251/j.issn.0254-6051.2024.01.006

Abstract

Abstract: Microstructure and properties of 6016 aluminum alloy sheet with different coils number of furnace charging were systematically studied by means of OM, SEM, EBSD, TEM, XRD and tensile tests. The results show that the tensile strength and yield strength of the 6016 aluminum alloy sheet with two coils of furnace charging are relatively low, and the uniform elongation is higher, and the effect of roping line on the surface of the sheet is good. The size of the dispersed phase in the 6016 aluminum alloy sheet is different. The precipitated Mg₂Si phase at the grain boundary is mainly distributed in strips and blocks, but the size of the precipitated phase in the sheet with three coils of furnace charging is relatively larger. This is because the longer heating and cooling time during the intermediate annealing process causes the precipitated phase to grow and coarsen to a certain extent. In addition, the 6016 sheet with three coils of furnace charging exits aggregated Goss texture and Cube texture, which can easily cause roping lines on the surface of the sheet and be harmful to the surface quality of the sheet.

Key words: 6016 aluminum alloy, coils number in furnace, microstructure, mechanical properties

CLC Number:

TG146.2⁺1

Sun Ning, Xu Zhiyuan, Yang Limin, Li Xinghui, Zhang Hao, Li Yancheng, Li Tao. Comparison on microstructure and properties of 6016 aluminum alloy sheet with different coils number of furnace charging[J]. Heat Treatment of Metals, 2024, 49(1): 39-47.

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