Investigating the Possibility to Reduce the Residual Stress Level in 2.5D Cutting Using Titanium Coated Carbide Ball End Mill

Table 5

Results of calculated TPM and ratios for microhardness and residual stress.

Ex. number	Factors				Microhardness		Residual stress
							Feed direction		Cutting direction
					TPM (HV)	(dB)	TPM (MPa)	(dB)	TPM (MPa)	(dB)
1	1	1	1	1	264.67	48.4514	−452.31	−56.2273	−355.38	−56.1861
2	1	2	2	2	245.00	47.7549	−242.31	−58.6666	−484.62	−54.2426
3	1	3	3	3	240.00	47.6005	−710.77	−51.8041	274.62	−62.1076
4	2	1	2	3	287.33	49.1667	−743.08	−51.0514	−129.23	−58.7981
5	2	2	3	1	246.33	47.8303	371.54	−63.3554	−306.92	−56.8157
6	2	3	1	2	244.67	47.7656	−662.31	−52.8233	−80.77	−59.2685
7	3	1	3	2	286.33	49.1369	484.62	−63.9985	−355.38	−56.1861
8	3	2	1	3	257.67	48.2125	355.38	−63.2595	−306.92	−56.8157
9	3	3	2	1	240.00	47.5920	420.00	−63.6369	436.15	−63.1440