Evaluation of machinability of cast az91 magnesium alloys in terms of surface roughness

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In this study, machinability characteristics and production of AZ91 magnesium alloy was carried out. The alloy was produced through traditional casting method. For this purpose, AZ91 Mg (9% Al, 1% Zn) based alloy was melted in an electric resistance furnace and then poured into metal molds. The machining tests were carried out through single point turning operations at four different cutting speeds (250, 350, 450 and 550 m/min), five different feed rates (0.025, 0.05, 0.1, 0.15 and 0.2 mm/rev) and four different depth of cuts (0.5, 1, 1.5, and 2 mm) without coolant. Decreases in surface roughness values were observed with decreasing feed rate. With increasing cutting speed, the surface roughness values decreased until a minimum value is reached beyond which they increased but both two feed rate (0.1 and 0.2) with value increased cutting speed show that decrease.

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AZ91 Magnesium Alloy , Surface Roughness , Machinability

Erciyes University Journal Of The Institute Of Science an‎d Technology

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Erciyes University Journal Of The Institute Of Science an‎d Technology