Analysis of Surface Roughness in Machining of Al-Si Based Alloys: An Experimental Study

Alparslan C., Bayraktar Ş.

ICENTE (7th International Conference on Engineering Technologies), Konya, Turkey, 23 - 25 November 2023, pp.276-280

  • Publication Type: Conference Paper / Full Text
  • City: Konya
  • Country: Turkey
  • Page Numbers: pp.276-280
  • Recep Tayyip Erdoğan University Affiliated: Yes


Abstract - In this study, Al-7Si-Mg and Al-7Si-0.6Mg alloys were produced by permanent mold casting method and their microstructural, mechanical and machinability properties were analyzed. While the microstructures were examined with an optical microscope, Brinell hardness measurement and tensile tests were performed for mechanical properties. Machining tests were conducted using 6 mm diameter two-fluted uncoated carbide end mill, different cutting speed (V: 50, 80 and 110 m/min), feed rate (f: 0.08; 0.16 and 0.24 mm/rev) and constant depth of cut (1 mm) in CNC vertical machining center. The microstructure of the Al-7Si-Mg alloy comprised of α-Al, primary Si, eutectic Al-Si, Mg2Si, β-Al5FeSi and π-AlSiMgFe phases. Al-7Si-0.6Mg alloy exhibited higher mechanical properties than Al-7Si-Mg alloy. Machining tests showed that the SR (Surface roughness), BUL (Built –up layer) and BUE (Built-up edge) reduced with raising V and raised with raising f. Al7Si-0.6Mg alloy exhibited better mechanical and machinability properties.