Effect of Microstructure on Hydrogen Induced Cracking Behavior of a High Deformability Pipeline Steel

The hydrogen induced cracking （HIC） behavior of a high deformability pipeline steel was investigated with three different dual-phase microstructures, ferrite and bainite （F＋B）, ferrite and martensite/austenite islands （F＋M/A） and ferrite and martensite （F＋M）, respectively. The HIC test was conducted...

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Published inJournal of iron and steel research, international Vol. 22; no. 10; pp. 937 - 942
Main Authors SHI, Xian-bo, YAN, Wei, WANG, Wei, ZHAO, Lian-yu, SHAN, Yi-yin, YANG, Ke
Format Journal Article
LanguageEnglish
Published Singapore Elsevier Ltd 01.10.2015
Springer Singapore
Subjects
Applied and Technical Physics
dual-phase microstructure
Engineering
high deformability
hydrogen induced cracking
Machines
Manufacturing
Material
Materials Engineering
Materials Science
mechanical property
Metallic Materials
Physical Chemistry
pipeline steel
Processes
双相组织
大变形
开裂行为
显微组织
氢致开裂
管线钢
裂纹敏感性
马氏体相
hydrogen induced cracking
mechanical property
dual-phase microstructure
high deformability
pipeline steel
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Summary:The hydrogen induced cracking （HIC） behavior of a high deformability pipeline steel was investigated with three different dual-phase microstructures, ferrite and bainite （F＋B）, ferrite and martensite/austenite islands （F＋M/A） and ferrite and martensite （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.
Bibliography:11-3678/TF
The hydrogen induced cracking （HIC） behavior of a high deformability pipeline steel was investigated with three different dual-phase microstructures, ferrite and bainite （F＋B）, ferrite and martensite/austenite islands （F＋M/A） and ferrite and martensite （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.
pipeline steel; high deformability; dual-phase microstructure; mechanical property; hydrogen induced cracking
ISSN:1006-706X
2210-3988
DOI:10.1016/S1006-706X(15)30093-5