Investigation of the effect of electrolytic hydrogen charging of X70 steel: I. The effect of microstructure on hydrogen-induced cold cracking and blistering

被引：63

作者：

Dunne, Druce P. ^{[1
]}

Hejazi, Daniel ^{[1
]}

Saleh, Ahmed A. ^{[1
]}

Haq, Ayesha J. ^{[1
]}

Calka, Andrzej ^{[1
]}

Pereloma, Elena V. ^{[1
,2
]}

机构：

[1] Univ Wollongong, Sch Mech Mat & Mechatron Engn, Wollongong, NSW 2522, Australia

[2] Univ Wollongong, Elect Microscopy Ctr, Wollongong, NSW 2519, Australia

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2016年 / 41卷 / 28期

基金：

澳大利亚研究理事会;

关键词：

X70 pipeline steel; Electrolytic hydrogen charging; Hydrogen-induced cold cracking (HICC); HICC susceptibility; Blister formation; Effect of microstructure; STRESS-CORROSION CRACKING; AISI; 4130; STEEL; PIPELINE STEELS; SULFIDE ENVIRONMENTS; THERMAL-DESORPTION; EMBRITTLEMENT; IRON; INCLUSIONS; DIFFUSION; PERMEATION;

D O I：

10.1016/j.ijhydene.2016.04.114

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：

By using electrolytic hydrogen charging, differences in hydrogen pick-up, trapping, hydrogen-induced cold cracking (HICC) and blistering were investigated for an X70 steel for a range of processing and microstructural conditions: as-rolled strip (banded ferritepearlite, BFP); transfer bar (ferrite-granular bainite, FGB); normalised and annealed transfer bar (equiaxed ferrite-pearlite, EFP); and a simulated grain coarsened heat affected zone (GCHAZ) (bainitic ferrite, BF). The microstructure was found to have a profound effect on the response to electrolytic hydrogen charging, with the BFP structure being the most susceptible to HICC and the development of surface blisters. In contrast, the simulated GCHAZ structure did not show any blistering for the maximum charging time of 24 h. These trends are consistent with the ratios of residual to total hydrogen content obtained for the same charging conditions (charging time; electrolyte, current density and sample geometry). The ratio decreased in the order BFP (46%), EFP (34%), FGB (33%), and BF (14%), reflecting the relative capacities of the different microstructures for strong trapping of hydrogen and the related susceptibility to HICC. (C) 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：12411 / 12423

页数：13

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