Effect of solution process on microstructure and tensile properties of 6061 aluminum alloy

doi:10.13251/j.issn.0254-6051.2020.05.014

Abstract

Abstract: Effect of solution process on microstructure and mechanical properties of 6061 aluminum alloy was investigated by means of OM, SEM and tensile test. The results show that the soluble second phase particles gradually dissolve, recrystallization is enhanced, both grain refinement and tensile properties of the alloy increase with the increase of solution time and solution temperature, and with further increase of solution time and solution temperature, the grain begins to coarsen and the strength of the alloy decreases. The amount of residual coarse secondary particles and the grain size of the alloy are the main factors which affect the tensile properties and fracture morphology of the alloy. Under the condition of aging at 180 ℃ for 8 h, the optimum solution process of the 6061 aluminum alloy is at 535 ℃ for 80 min.

Key words: solution process, microstructure, tensile properties, fracture morphology

CLC Number:

TG166.3

Ma Dongwei, Zhang Chun, Zhang Yuanhao, Li Wenke. Effect of solution process on microstructure and tensile properties of 6061 aluminum alloy[J]. Heat Treatment of Metals, 2020, 45(5): 74-77.

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