TitleSurface Integrity of magnesium alloy AZ91D at high speed milling
SourceAsiatrib-2018, pp. 497-498
AuthorMohd Shahfizal Ruslan, Jaharah A Ghani, Afifah Juri, Mohd Shahir Kasim, Che Hassan Che Haron, Kamal Othman


Magnesium alloy AZ91D is used extensively in automotive industry because of its high strength to weight ratio properties. The experimental work involved the use of uncoated carbide end mill cutting tool, with the utilization of full factorial (L16) design of experiment at cutting speed of 900 and 1300 m/min, feed rate of 0.02 and 0.05 mm/tooth, axial depth of cut of 0.2 and 0.3 mm and radial depth of cut of 10 and 40 mm in both dry and cryogenic for high speed milling operation. For this range of cutting conditions, a mirror like surface roughness in the range of 0.05- 0.27 ┬Ám were achieved. Furthermore, there were no microstructure changes observed beneath the machine surface for this range of cutting conditions. In comparison to dry machining, the utilization of cryogenic cooling improves the surface roughness by to 47% compared to dry machining.


Asiatrib-2018, pp. 497-498