Browsing by Author "Meyveci A."

Now showing 1 - 2 of 2
  • No Thumbnail Available
    Item
    Pin-on-disc characterization of 2xxx and 6xxx aluminium alloys aged by precipitation age hardening
    (2010) Meyveci A.; Karacan I.; Çaligülü U.; Durmuş H.
    In this study, wear behaviors of aged aluminium AA 2024 and AA 6063 alloys were investigated. AA 2024 and AA 6063 aluminium alloys were solution treated at two different temperatures of 490 and 520 °C. Then all samples were cooled to room temperature. After this process, the samples were aged at three different temperatures (140 °C, 180 °C and 220 °C) for five different periods of time (2, 4, 6, 8, 10). The microstructures of the aged samples were examined by optical microscope, SEM-EDS and X-ray analysis. The hardness values of the aged samples were measured by microhardness tests. Wear tests were carried out on the pin-on-disc model wear test apparatus under sliding velocity at 2 m s-1 speed, 400, 800, 1200 and 1600 m sliding distances for 10, 20 and 30 N variable loads. The mass-loss values of the aged samples were tested by wear tests. As a result of this study, the hardness of the second phase precipitated samples was found to be higher than that of the as-cast samples and it increased with increasing the solution temperature and aging periods. The study also revealed that the wear rate and friction coefficient can be decreased with increasing the solution temperatures and aging periods. Crown Copyright © 2009.
  • No Thumbnail Available
    Item
    A study of wear of aged aluminum alloys 2XXX and 6XXX within the manova statistical analysis
    (2011) Meyveci A.; Karacan Í.; FIrat E.H.; ÇalIgülü U.; Durmuş H.
    Statistically processed data on the microstructure and wear of aged aluminum alloys AA2024 and AA6063 are presented. Results of wear tests are analyzed using multidimensional analysis of variance (MANOVA) with 95% confidence interval for statistically significant deviations. It is shown that the temperature and the duration of the aging are statistically significant factors affecting wear of aluminum alloys 2XXX and 6XXX. © 2011 Springer Science+Business Media, Inc.