1. Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, Liaoning, China 2. University of Chinese Academy of Sciences, Beijing 100049, China 3. Petro China Pipeline Company, Langfang 065000, Hebei, China
Effect of Microstructure on Hydrogen Induced Cracking Behavior of a High Deformability Pipeline Steel
1. Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, Liaoning, China 2. University of Chinese Academy of Sciences, Beijing 100049, China 3. Petro China Pipeline Company, Langfang 065000, Hebei, China
ժҪ The hydrogen induced cracking (HIC) behavior of a high deformability pipeline steel was investigated with three differ-ent dual-phase microstructures, ferrite and bainite (F+B), ferrite and martensite/austenite islands (F+M/A) and ferrite and martens-ite (F+M), respectively. The HIC test was conducted in hydrogen sulfide (H2S)-saturated solution. The results showed that the steels with F+B and F+M/A dual-phase microstructures had both higher deformability and better HIC resistance, whereas the harder martensite phase in F+M microstructure was responsible for the worst HIC resistance. The band-like hard phase in dual-phase mi-crostructure was believed to lead to increasing susceptibility to HIC.
Abstract��The hydrogen induced cracking (HIC) behavior of a high deformability pipeline steel was investigated with three differ-ent dual-phase microstructures, ferrite and bainite (F+B), ferrite and martensite/austenite islands (F+M/A) and ferrite and martens-ite (F+M), respectively. The HIC test was conducted in hydrogen sulfide (H2S)-saturated solution. The results showed that the steels with F+B and F+M/A dual-phase microstructures had both higher deformability and better HIC resistance, whereas the harder martensite phase in F+M microstructure was responsible for the worst HIC resistance. The band-like hard phase in dual-phase mi-crostructure was believed to lead to increasing susceptibility to HIC.
��������:National Key Technology R&D Program of China
ͨѶ����:
���
E-mail: kyang@imr.ac.cn
����:
Xian-bo SHI,, Wei YAN, Wei WANG, Lian-yu ZHAO, Yi-yin SHAN, Ke YANG. Effect of Microstructure on Hydrogen Induced Cracking Behavior of a High Deformability Pipeline Steel[J]. �й������ڿ���, 2015, 22(10): 937-942.
Xian-bo SHI,, Wei YAN, Wei WANG, Lian-yu ZHAO, Yi-yin SHAN, Ke YANG. Effect of Microstructure on Hydrogen Induced Cracking Behavior of a High Deformability Pipeline Steel. Chinese Journal of Iron and Steel, 2015, 22(10): 937-942.
2015, Vol. 22 
