Original scientific paper

Effects of cold rolling (CR) and annealing time on microstructure and mechanical properties of AA 5052 aluminum alloy

Kusmono ; Department of Mechanical and Industrial Engineering, Faculty of Engineering, Universitas Gadjah Mada, Jl. Grafika No.2, Yogyakarta, 55281, Indonesia
C. Bora ; Department of Mechanical and Industrial Engineering, Faculty of Engineering, Universitas Gadjah Mada, Jl. Grafika No.2, Yogyakarta, 55281, Indonesia
U. A. Salim ; Department of Mechanical and Industrial Engineering, Faculty of Engineering, Universitas Gadjah Mada, Jl. Grafika No.2, Yogyakarta, 55281, Indonesia

Abstract

In this paper, the influences of cold rolling and annealing time on the microstructure and mechanical behaviors of AA 5052 aluminum alloy were investigated. An aluminum sheet was cold-rolled at room temperature at 15, 30, and 45 % rolling reduction. The 45 % cold-rolled sample was subsequently annealed at 370 °C for 2, 4, and 6 h. The microstructure was observed using optical microscopy whereas the mechanical behaviors were evaluated through hardness and tensile tests. It was found that the equiaxed grains are severely elongated along the rolling direction with increased rolling reduction. The hardness and strength increase significantly with an increase of rolling reduction but the ductility decreases. The annealing treatment reduces hardness and strength but improves the ductility.

Keywords

AA 5052; cold rolling; annealing; microstructure; mechanical properties

Hrčak ID:

241166

URI

https://hrcak.srce.hr/241166

Publication date:

1.10.2020.

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