Effect of Heat Treatment on Wear and Corrosion Resistance of Light Al- Based Al-Mg-Sb Alloy Used in Aviation and Automobile Sector
Fatma MEYDANERİ TEZEL Ozan Akyol Berkay Aras Çağla Elçin YAĞCIOĞLU
AbstractWith the development of technology, light engineering alloys have recently become a popular group of material. The most important consideration in the development of these alloys is production cost, applicability in technology, temperature and composition. For this reason, in this study, the effects on corrosion resistance of composition and annealing parameters in light Al-based Al-Mg-Sb eutectic alloy systems with commercial and industrial design were investigated depending on precipitation and intermetallic phase distribution Al based Mg-Al-Sb eutectic alloys were melted by induction furnace and were casted into kokil mould. Then, samples were annealed at 573 K with vacuum furnace. Cyclic Potentiostatic test was applied with the PARSTAT 4000 device for corrosion rate. In the experiment, firstly, the change in corrosion potentials between the working electrode and the reference electrode since the dipped reference electrode and working electrode into the 3.5% NaCI solution was measured as mV versus time without passing current on the system. After reaching the equilibrium potential (Ekor), potentiodynamic polarization curves were recorded from the cathodic to anodic direction. Measurements were carried out at open circuit potential (15 min), and the graphs of the change of the potential versus the current density were obtained, and the corrosion rates were determined for the heat treatment and heat-free samples.