Comparison of the Annealing Heat-Treated Microstructure and Hardness of the AA2024-T4 and AA6061-T6 Alloys
محورهای موضوعی : Journal of Environmental Friendly MaterialsA Anbarzadeh 1 , H Sabet 2 , A Granmayeh Urmia 3
1 - Department of Materials Engineering- South Tehran Branch, Islamic Azad University, Tehran, Iran
2 - Department of Materials Engineering- Karaj Branch, Islamic Azad University, Karaj, Iran
3 - Department of Materials Engineering- South Tehran Branch, Islamic Azad University, Tehran, Iran
کلید واژه:
چکیده مقاله :
Precipitation Hardenable Aluminum Alloys are suitable alternatives in electric vehicle bodies due to their lower specific weight compared to steel. Therefore, the development and understanding of the properties of aluminum alloys help to develop electric vehicles, reduce greenhouse gas emissions, and control global warming. In this research, we investigated the heat treatment of AA2024-T4 and AA6061-T6 alloys at a temperature of 453 °C for 210 minutes in a tube furnace with a heating rate of 5 oC/min in a vacuum (7.5×10-13 Torr). The alloys were assessed by optical microscopy (OM), scanning electron microscopy (SEM), and hardness test. The effect of heat treatment was investigated on the particle size as well as the phases. The particle diameter and hardness value of AA2024-T4 decreased after heat treatment. The number of precipitates in AA2024-T4 increased after heat treatment. Precipitates size in AA6061-T6 alloy remained almost unchanged after the heat treatment.
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