The Effect of Aging Parameters and Roughness on the Wear Properties of Aluminum Alloy 6082

Hakan Cetinel; Mehmet Ayvaz

doi:10.3139/120.110661

Article

The Effect of Aging Parameters and Roughness on the Wear Properties of Aluminum Alloy 6082

Hakan Cetinel and Mehmet Ayvaz

Published/Copyright: November 20, 2014

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From the journal Materials Testing Volume 56 Issue 11-12

Abstract

The aim of this study was to investigate the influence of aging parameters and initial roughness on the wear properties of the aluminum alloy AA 6082 (Al-Mg-Si). For this purpose, various heat treatments were carried out. Afterwards, the solutionized samples and artificially aged samples (at 185 °C for 3 and 6 h) were prepared in terms of two different average surface roughnesses via various grades of grinding. The wear behavior of the samples was investigated by a pin-on-disc wear test apparatus under four different applied loads (5, 10, 15 and 20 N) and five different sliding distances (250, 500, 750, 1000, 1250 and 1500 m). The sliding velocity was 30 cm × s⁻¹. After the wear tests, the mass loss was measured for all samples and the worn surfaces were examined by scanning electron microscopy (SEM). The wear test results clearly show that with increasing hardness, the mass loss decreases, and the mass loss of the worn surfaces increases with increasing sliding distance, test load and initial roughness.

Kurzfassung

Das Ziel der diesem Beitrag zugrunde liegenden Studie bestand darin, den Einfluss der Alterungsparameter und der anfänglichen Rauheit auf die Verschleißeigenschaften der Aluminiumlegierung AA 6082 (Al-Mg-Si) zu untersuchen. Zu diesem Zweck wurden verschiedene Wärmebehandlungen durchgeführt. Danach wurden lösungsgeglühte und künstlich (bei 185°C für 3 bzw. 6 h) gealterte Proben vorbereitet, die zwei verschiedene Oberflächenrauheiten durch verschiedene Schleifstufen besitzen. Das Verschleißverhalten der Proben wurde mittels der Stift-Scheibe-Prüfapparatur untersucht und zwar für vier verschiedene Lasten (5, 10, 15 und 20 N) sowie fünf verschiedene Schleifstrecken (250, 500, 750, 1000, 1250 und 1500 m). Die Schleifgeschwindigkeit betrug 30 cm × s⁻¹. Nach den Verschleißversuchen wurde für alle Proben der Masseverlust gemessen und es wurden die verschlissenen Oberflächen mittels Rasterelektronenmikroskopie (REM) untersucht. Die Ergebnisse der Verschleißversuche zeigen deutlich, dass der Masseverlust bei zunehmender Härte abnimmt und dass der Masseverlust der verschlissenen Oberflächen mit zunehmender Reibstrecke, Prüflast und anfänglicher Rauheit ansteigt.

Keywords: AA 6082; aging; wear; roughness; pin-on-disc test

*Correspondence Address, MSc Mehmet Ayvaz, Celal Bayar University, Faculty of Engineering, Department of Mechanical Engineering, Manisa, Turkey. E-mail: m.ayvaz@cbu.edu.tr

Assoc. Prof. Dr. Hakan Cetinel, born 1969, achieved his BSc in Mechanical Engineering in 1993, his MSc in Mechanical Engineering in 1997 and his PhD in Metallurgical and Materials Engineering in 2004. Since 2009, he is Associate Professor in the Department of Mechanical Engineering, Faculty of Engineering, Celal Bayar University in Manisa, Turkey.

Mehmet Ayvaz, born 1985, achieved his BSc in Mechanical Engineering in 2008 and his MSc in Mechanical Engineering in 2010. Since 2012, he is Research Assistant in the Department of Mechanical Engineering of the Faculty of Engineering at the Celal Bayar University in Manisa, Turkey.

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Published Online: 2014-11-20

Published in Print: 2014-11-17

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Articles in the same Issue

https://doi.org/10.3139/120.110661

Keywords for this article

AA 6082; aging; wear; roughness; pin-on-disc test