Parameter Design in Carbonitriding of EN36, 16MnCr5, and AISI 4140 Steels Using Principal Component-Based Grey Incidence (PGI)

Table 2

Carbonitriding parameter combinations and the observed responses.

Order of trials		Surface treatment inputs				Responses
Actual	Random	A	B	C	D	HV @ 0.1 Kg		DD (µm)		WL (gm)
1	7	EN36	800	30	0.3	532	533	77	78	0.0171	0.0169
2	3	EN36	835	40	0.4	549	551	91	93	0.0145	0.0143
3	4	EN36	870	50	0.5	564	567	94	93	0.0140	0.0142
4	2	16MnCr5	800	30	0.4	604	606	100	100	0.0123	0.0121
5	17	16MnCr5	835	40	0.5	685	685	108	109	0.0132	0.0133
6	18	16MnCr5	870	50	0.3	612	607	104	102	0.0136	0.0135
7	1	AISI4140	800	40	0.3	643	639	92	90	0.0145	0.0146
8	16	AISI4140	835	50	0.4	718	720	110	111	0.0099	0.0105
9	12	AISI4140	870	30	0.5	684	680	103	102	0.0115	0.0115
10	14	EN36	800	50	0.5	503	503	101	100	0.0191	0.0190
11	6	EN36	835	30	0.3	535	540	95	92	0.0162	0.0164
12	9	EN36	870	40	0.4	688	686	117	118	0.0122	0.0120
13	10	16MnCr5	800	40	0.5	624	619	101	100	0.0163	0.0165
14	11	16MnCr5	835	50	0.3	706	705	96	97	0.0148	0.0149
15	13	16MnCr5	870	30	0.4	692	687	94	95	0.0126	0.0125
16	8	AISI4140	800	50	0.4	635	638	97	96	0.0154	0.0156
17	5	AISI4140	835	30	0.5	678	676	106	108	0.0137	0.0136
18	15	AISI4140	870	40	0.3	682	680	109	110	0.0164	0.0163