Effect of heat treatment conditions on aluminum alloy 6061

Lee, Mei Fang (2014) Effect of heat treatment conditions on aluminum alloy 6061. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

The report presented an experimental study on the precipitation of aluninum alloy 6061 to investigate the effect of aging time and temperatures on the mechanical properties and microstructure. Thermal treatment was applied to the aluminum specimens that included of heat treatment process at 530˚C; followed by water quenching and finally the artificial aging process. This experimental study was focused on the artificial aging upon which the aging temperature is varying between 150˚C to 200˚C at five different aging times. The Vickers hardness test and tensile test were applied to evaluate the hardness measurements and tensile strength for AA6061 respectively as well as the microstructure analysis after the aging process. Various aging temperature and aging times indicated remarkable difference in the mechanical properties and microscopic observation. The optimum aging time and temperature was determined at the end of this experiment. The study brought to the conclusion that the optimum aged was achieved between 150˚C to 200˚C with 2 to 6 hours of aging time. The effect of heat treatment on the strength and hardness were been investigated. Microstructure evolution analysis was also done to the AA6061.

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