Tribological Behavior and Analysis on Surface Roughness of CNC Milled Dual Heat Treated Al6061 Composites

Table 3

Graphical observations of CNC milling outcomes.

Specimen	Hardness (BHN and RHN)	Tool	Speed (N) (rpm)	Feed rate (f) (mm/rev)	Surface roughness (μm)	Average surface roughness (μm)
Al6061 heat treated	110.34 BHN	HSS	2500	0.05	2.796	1.78975
			3800	0.1	3.082
	66.81 RHN	Carbide	2500	0.1	0.384
			3800	0.05	0.897
Al6061 nonheat treated	101.71 BHN	HSS	2500	0.1	4.807	3.03775
			3800	0.05	5.354
	65.825 RHN	Carbide	2500	0.05	1.033
			3800	0.1	0.957