Effect of finish rolling temperature and annealing temperature on microstructure and properties of 5052 aluminum alloy sheet

doi:10.13251/j.issn.0254-6051.2021.09.013

Abstract

Abstract: Effects of finish rolling temperature and annealing temperature on microstructure and properties of the 5052 aluminum alloy sheet were studied by using tensile and hardness tests, microstructure and tensile fracture observation. The results show that, without annealing after rolling the recrystallization occur on the surface layer of the sheet,while only a recovery process occurs in the center layer structure. After annealing, with the increase of annealing temperature, the strength and hardness of the alloy sheet decrease, but the elongation increases. When the final rolling temperature of the 5052 aluminum alloy is not lower than 330 ℃, a uniform microstructure can be obtained during the subsequent cold working, and a more excellent comprehensive properties of 5052-O state alloy sheet can be obtained after annealing at 400-500 ℃, at which the mechanical properties are R_m≥175 MPa,R_p0.2≥65 MPa and A≥32%.

Key words: 5052 aluminum alloy, finish rolling temperature, annealing temperature, microstructure and properties

CLC Number:

Huang Juan, Huang Yuanchun, Shen Zhenyu, Li Xiangyue, Zeng Yu, Yang Gengchen. Effect of finish rolling temperature and annealing temperature on microstructure and properties of 5052 aluminum alloy sheet[J]. Heat Treatment of Metals, 2021, 46(9): 79-84.

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