In the present study, the effect of an La alloying element with different quantities (1, 3 and 5 wt.-%) on the microstructure, mechanical and dry sliding wear properties of Mg- 3Al-3Sn-3Sb alloy was investigated. The wear tests were done on the alloys using pin on-disk equipment against a 4140 steel disc as counterpart under three different sliding velocities of 0.3, 0.6 and 1.2 ms-1 and four different loads of 5, 10, 20 and 40 N. The microstructural results showed that the new intermetallic phases (La5Sn3 and LaSnSb2) were formed with addition of La to the main alloy. Also, it was observed that the hardness of the Mg-3Al-3Sn-3Sb alloy was raised with increasing La addition. Furthermore, the tensile properties of the Mg-3Al-3Sn-3Sb alloy improved with rising La content at room and elevated temperature. The wear rates of the alloys increase with increasing of the sliding speed and load. In addition to this, the wear rate of the Mg-3Al-3Sn-3Sb alloy was found to be higher than that of the La content alloys for all test conditions.
About the authors
Dr. Güven Yarkadaş was born in 1974. He earned a BSc in Metallurgy Engineering from Istanbul Technical University in 2001, followed by MSc (2004) and PhD (2010) degrees in Metallurgy and Materials Engineering from the University of Sakarya, where his doctoral work was focused on the effects of mechanical activation on the Soda Roasting of Chromite. At present, he works as a lecturer in Mersin University.
Dr. Levent Cenk Kumruoğlu was born in 1977. He earned a BSc in Metallurgy Engineering from Sakarya University in 2000, followed by MSc (2003) and PhD (2010) degrees in Metallurgy and Materials Engineering from the University of Sakarya, where his doctoral work was focused on Plasma based surface coating and modification. At present, he works as a lecturer in İskenderun Technical University.
Dr. Selma Özarslan was born in 1986. She earned a BSc in Physics Science from Selçuk University in 2009, followed by MSc (2012) and PhD (2018) degrees in Physics Science from Mustafa Kemal University, where her doctoral work was focused on magnesium based biodegradable materials. At present, she works as a lecturer in Mustafa Kemal University.
Dr. Hüseyin Şevik was born in 1980. He earned a BSc in Metallurgy Engineering from Sakarya University in 2001, followed by MSc (2004) and PhD (2011) degrees in Metallurgy and Materials Engineering from the University of Sakarya, where his doctoral work was focused on magnesium alloys and their mechanical properties. At present, he works as a lecturer in Mersin University.
The authors would like to thank Ms. Seher KURU for performing SEM characterizations.
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