Progress of hydrogen embrittlement in pipeline steel
Hydrogen energy is a kind of green low-carbon secondary energy,and improving the use of hydrogen ener-gy can promote energy saving and reduce environmental pollution.At the present stage,the efficient way of hydro-gen transmission is mainly pipeline transportation,and the hydrogen embrittlement of pipeline steel affects the trans-portation safety.How to improve the anti-hydrogen embrittlement ability of pipeline steel has been widely con-cerned,but there is no theory that can completely explain the hydrogen embrittlement phenomenon.The compre-hensive properties and development trend for different grades of pipeline steel are analyzed from the aspects of devel-opment and hydrogen embrittlement mechanisms.The hydrogen pressure theory,hydrogen enhanced localized plas-ticity(HELP)and hydrogen enhanced decohesion(HEDE)are mainly introduced.The influencing factors of hydro-gen embrittlement for pipeline steel are discussed from the perspectives of alloying elements,microstructure,pro-cessing technology,hydrogen concentration and hydrogen environment.Finally,the key and difficult points in the development of pipeline steel are analyzed according to the current research status,which provides reference for the development and application of anti-hydrogen embrittlement pipeline steel,and the future research direction of pipe-line steel needs to be paid attention to is prospected.
NETL
NSTL
万方数据
