Hydrogen trapping and hydrogen induced cracking of welded X100 pipeline steel in H2S environments

被引：82
作者：
Gan, Lijun [1 ]
Huang, Feng [1 ]
Zhao, Xiaoyu [1 ]
Liu, J. [1 ]
Cheng, Y. Frank [1 ,2 ]
机构：
[1] Wuhan Univ Sci & Technol, State Key Lab Refractories & Met, Wuhan 430081, Hubei, Peoples R China
[2] Univ Calgary, Dept Mech Engn, Calgary, AB T2N 1N4, Canada
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2018年 / 43卷 / 04期
基金：
中国国家自然科学基金;
关键词：
X100 pipeline steel; The welded joint; Hydrogen induced cracking; Hydrogen trapping; Hydrogen concentration; STAINLESS-STEEL; HSLA STEEL; MICROSTRUCTURE; SUSCEPTIBILITY; DIFFUSION; PERMEATION; BEHAVIOR; TEXTURE; INCLUSIONS; RESISTANCE;
D O I：
10.1016/j.ijhydene.2017.11.155
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Hydrogen induced cracking (HIC) susceptibility of the welded X100 pipeline steel was evaluated in NACE "A" solution at room temperature according to the NACE TM0284-2011 standard. Both the kinetic parameters of the permeability (J(infinity)L), the apparent diffusivity (D-app) and the concentration of reversible and irreversible hydrogen in the base metal and welded joint of X100 pipeline steel were quantitatively investigated by hydrogen permeation test. The results showed that the welded joint with an inhomogeneous microstructure had a higher trap density and more susceptible to HIC due to two orders of magnitude larger in the concentration of irreversible hydrogen than that of base metal, though all presenting poor HIC resistance for both base metal and the welded joint. The HIC cracks initiated from the inclusions enriching in Al, Ca, Si, Mn. The cracks are primarily trans granular, accompanying with limited intergranular ones. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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页码：2293 / 2306
页数：14
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