Study on Coercivity-Stress Relationship of X80 Steel under Biaxial Stress

Table 4

Error analysis of fitting results of test piece 2.

Serial no.	(MPa)	(MPa)	(A/m)	(A/m)	(A/m)	(%)	Hcy (A/m)	Hc'y (A/m)	(A/m)	(%)
1	0	0	1079.1	1043	36.1	3.35	1089.6	1087.5	2.1	0.19
2	0	30	1086.4	1052.9	33.5	3.08	1071.5	1072.4	−0.9	−0.08
3	0	60	1092.4	1062.7	29.7	2.72	1060.1	1057.4	2.7	0.25
4	0	90	1102.1	1072.6	29.5	2.68	1042.1	1042.5	−0.4	−0.04
5	0	120	1113.2	1082.5	30.7	2.76	1010.7	1027.4	−16.7	−1.65
6	0	150	1119.2	1092.4	26.8	2.39	1007	1012.8	−5.8	−0.58
7	0	180	1125.3	1102.2	23.1	2.05	996.6	997.6	−1.0	−0.10
8	0	210	1143.6	1112.1	31.5	2.75	994.1	982.7	11.4	1.15
9	0	240	1176.2	1122	54.2	4.61	984.9	967.2	17.7	1.80
10	180	0	998.1	1132	−133.9	−13.42	1129.9	1134.5	−4.6	−0.41
11	180	30	997.2	1141.9	−144.7	−14.51	1117.1	1119.6	−2.5	−0.22
12	180	60	996.3	1151.7	−155.4	−15.60	1104.3	1104.8	−0.5	−0.05
13	180	90	1013.9	1161.6	−147.7	−14.57	1092.7	1089.1	3.6	0.33
14	180	120	1031.4	1171.5	−140.1	−13.58	1081.2	1074.5	6.7	0.62
15	180	150	1072.8	1181.4	−108.6	−10.12	1059.5	1059	0.5	0.05
16	180	180	1114.3	1191.2	−76.9	−6.90	1037.9	1044.5	−6.6	−0.64
17	180	210	1114.2	1201.1	−86.9	−7.80	1023.7	1029.9	−6.2	−0.61
18	180	240	1114.1	1211	−96.9	−8.70	1009.5	1014.6	−5.1	−0.51