Impact of aging parameters on different properties of the EN AW-6082 aluminum alloy
Date
2024
Authors
Stamenković, Uroš
Marković, Ivana
Ćosović, Vladan
Markoli, Boštjan
Journal Title
Journal ISSN
Volume Title
Publisher
Mining and Metallurgy Institute Bor
Source
Proceedings - 55th International October Conference on Mining and Metallurgy - IOC 2024, 15-17 October 2024, Kladovo, Serbia
Volume
Issue
Abstract
This research investigates how the thermal, mechanical, and structural properties of the EN AW-6082 aluminum alloy are affected by aging parameters (temperature and time). To investigate these properties, thermal diffusivity and hardness were measured, and scanning electron and transmission electron microscopes were used to detect structural changes. The heat treatments consisted of solutionizing at 550 °C for an hour and then quenching in ice water, followed by aging at two different temperatures (180 °C and 200 °C) for 1-8 hours. Investigation revealed that the hardness increases gradually with aging time, reaching a maximum of 124 HV 10 after aging at 180 °C for six hours. Similarly, thermal diffusivity increases with both aging time and temperature, peaking after aging at 200 °C for five hours. An SEM/EDS analysis shows the presence of finely dispersed precipitates that contain Mg, Si, and Fe. TEM investigation confirms the existence of nanometer-sized rod-shaped precipitates believed to be the strengthening β’’ phase.
Description
Keywords
Aging, Thermal diffusivity, Hardness, Microstructure, EN AW-6082
Citation
DOI
10.5937/IOC24213S
Scopus
ISSN
ISBN
978-86-7827-053-6
License
CC-BY-NC-ND