X65抗酸管线钢中非金属夹杂物和氢致开裂裂纹的分析及预测

朱延山, 张继明, 武凤娟, 曲锦波

Analysis and Prediction of Nonmetallic Inclusions and Their Effect on Hydrogen Induced Cracking Behavior of X65 Acid-resistant Pipeline Steel

ZHU Yanshan, ZHANG Jiming, WU Fengjuan, QU Jinbo

表1 HIC实验后12个试样截面上最大尺寸HIC裂纹及相应的非金属夹杂物

Table 1 Lengths of maximum HIC cracks and corresponding inclusions on the transversal surfaces of twelve samples after HIC testing

No.	L_HIC / μm	L_in / μm	L_HIC / L_in
1	15.5	7.5	2.01
2	16.0	11.8	1.36
3	28.0	17.0	1.63
4	42.0	26.0	1.62
5	47.1	33.5	1.41
6	50.8	35.0	1.45
7	55.2	37.0	1.49
8	66.7	36.0	1.83
9	72.0	27.0	2.67
10	78.3	40.0	1.96
11	90.0	46.0	1.96
12	96.0	41.7	2.30