石油用S135钻杆钢氢渗透与氢致滞后开裂行为
Hydrogen Permeation and Hydrogen Induced Cracking of Drill Pipe Steel S135
摘 要
通过电化学渗氢技术与恒载荷拉伸试验方法,研究了不同充氢电流密度下S135钻杆用钢的氢扩散系数、试样中的可扩散氢浓度及其氢致开裂门槛应力.结果表明,S135钻杆用钢在0.5 mol/L H2SO4+0.25 g/L As2O3溶液中电化学充氢后的可扩散氢浓度C0与充氢电流密度的平方根 i 成正比,恒载荷条件下,氢致开裂门槛应力σHIC随可扩散氢浓度的对数lnC0的升高而下降.
氢渗透
氢致开裂
门槛应力
drill pipe steel S135
hydrogen permeation
hydrogen induced cracking (HIC)
threshold stress
Abstract
Hydrogen permeation coefficient and diffusible hydrogen content in drill pipe steel S135 during cathodic charging with hydrogen were studied by an electrochemical method,and the hydrogen induced cracking (HIC) threshold stress of the steel was investigated using constant load tests.Experimental results showed that during dynamical charging of drill pipe steel S135 with hydrogen in 0.5 mol/ L H2SO4+0.25 g/L As2O3 solution,the concentration of diffusible hydrogen C0 was directly proportional to cathodic current density i.The threshold stress σHIC decreased linearly with increasing logarithm of hydrogen concentration lnC0 in constant load tests.
中图分类号 TG172.8
所属栏目 试验研究
基金项目
收稿日期 2008/10/5
修改稿日期 2008/11/4
网络出版日期
作者单位点击查看
备注杨勇进,硕士研究生.
引用该论文: YANG Yong-jin,LI Zong-tian,PANG Xiao-lu,LI Jian-ping,GAO Ke-wei. Hydrogen Permeation and Hydrogen Induced Cracking of Drill Pipe Steel S135[J]. Corrosion & Protection, 2009, 30(11): 787～790
被引情况:
【1】黄本生,卢东华,姜涛,张俊,宁扬忠, "G105钻杆在不同氢离子浓度溶液中的腐蚀行为",机械工程材料 38, 81-84(2014)
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参考文献
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