应力作用下系泊链钢中氢的扩散行为

张晓琰; 程晓英; 温群锋; 吴雨昊

doi:10.11973/fsyfh-202102005

应力作用下系泊链钢中氢的扩散行为

上海大学材料研究所, 上海 200072

基金项目:

国家自然科学基金（51271108；51871145）

详细信息

通讯作者:
程晓英, E-mail:chengxy@staff.shu.edu.cn

中图分类号: TG142
计量
- 文章访问数: 7
- HTML全文浏览量: 0
- PDF下载量: 3
出版历程
- 收稿日期: 2019-04-28
- 刊出日期: 2021-02-14

Hydrogen Diffusion Behavior of Mooring Chain Steel under Stress

Institute of Materials, Shanghai University, Shanghai 200072, China

摘要

摘要: 采用电化学充氢方法与恒应力拉伸装置相结合，研究了不同应力水平下系泊链钢中氢的扩散行为。结果表明：无应力条件下对试样进行充氢时，阳极电流密度到达最大值后保持稳定；在应力作用下试样发生变形，阳极电流密度呈不同的变化趋势。与无应力条件相比，在弹性应力作用下，阳极电流密度略微增大，氢的表观扩散系数略微降低，穿透时间略微延长；在屈服应力作用下，阳极电流密度与氢的表观扩散系数都达到最大，穿透时间最短，但随着加载时间的延长，阳极电流密度和氢的表观扩散系数明显下降，穿透时间明显延长；在大于屈服强度的应力作用下，阳极电流密度回落到无应力或弹性应力作用下的值，但氢的表观扩散系数下降，氢穿透时间延长。
- 系泊链钢 /
- 应力 /
- 氢 /
- 阳极电流密度 /
- 表观扩散系数
Abstract: The diffusion behavior of hydrogen in mooring chain steel at different stress levels was studied using electrochemical hydrogen charging method combined with constant stress tensile device. The results show that anodic current density was stable after reaching the maximum value when the specimen was charged with hydrogen under stress-free condition. When the specimen was deformed under stress, the anodic current density displayed different trends. Under elastic stress, the anodic current density increased slightly, the apparent diffusion coefficient of hydrogen decreased a little, and meanwhile the penetration needed somewhat long time, compared with stress-free condition. Under yield stress both the anodic current density and the apparent diffusion coefficient of hydrogen reached the maximum, and the penetration time was minimized. But with the increase of loading time, both anodic current density and apparent diffusion coefficient of hydrogen decreased apparently, and the penetration time prolonged. Under the stress beyond yield strength, the anodic current density returned to the value under stress-free or elastic stress, the diffusion coefficient of hydrogen decreased, and the hydrogen needed more time to penetrate.
- mooring chain steel /
- stress /
- hydrogen /
- current density /
- apparent diffusion coefficient

HTML全文

参考文献(20)

[1]	侯保荣,张盾,王鹏. 海洋腐蚀防护的现状与未来[J]. 中国科学院院刊,2016,31(12):1326-1331.
[2]	KIM S J,JUNG H G,KIM K Y. Effect of tensile stress in elastic and plastic range on hydrogen permeation of high-strength steel in sour environment[J]. Electrochimica Acta,2012,78:139-146.
[3]	郑传波,黄彦良,王旭,等. 动载条件下16Mn钢在模拟大气环境中的氢渗透行为[J]. 腐蚀与防护,2010,31(4):291-293,299.
[4]	HUANG Y L,NAKAJIMA A,NISHIKATA A,et al. Effect of mechanical deformation on permeation of hydrogen in iron[J]. ISIJ International,2003,43(4):548-554.
[5]	郭望,赵卫民,张体明,等. 阴极极化和应力耦合作用下X80钢氢渗透行为研究[J]. 中国腐蚀与防护学报,2015,35(4):353-358.
[6]	GUEDES D,OUDRISS A,FRAPPART S,et al. The influence of hydrostatic stress states on the hydrogen solubility in martensitic steels[J]. Scripta Materialia,2014,84/85:23-26.
[7]	BRASS A M,CHNE J. Influence of tensile straining on the permeation of hydrogen in low alloy Cr-Mo steels[J]. Corrosion Science,2006,48(2):481-497.
[8]	EL ALAMI H,CREUS J,FEAUGAS X. Thermodynamic parameters evolution versus plastic strain during HER on nickel in sulphuric acid[J]. Electrochimica Acta,2007,52(12):4004-4014.
[9]	FRAPPART S,FEAUGAS X,CREUS J,et al. Hydrogen solubility,diffusivity and trapping in a tempered Fe-C-Cr martensitic steel under various mechanical stress states[J]. Materials Science and Engineering:A,2012,534:384-393.
[10]	柯书忠,刘静,黄峰,等. 预应变对DP600钢氢脆敏感性的影响[J]. 中国腐蚀与防护学报,2018,38(5):424-430.
[11]	BRASS A M,CHNE J. Influence of tensile straining on the permeation of hydrogen in low alloy Cr-Mo steels[J]. Corrosion Science,2006,48(2):481-497.
[12]	CHENG X Y,ZHANG H X,LI H,et al. Effect of tempering temperature on the microstructure and mechanical properties in mooring chain steel[J]. Materials Science and Engineering:A,2015,636:164-171.
[13]	苏令超,程晓英,张诗洋. 回火温度对系泊链钢氢扩散行为的影响[J]. 热加工工艺,2018,47(8):192-196.
[14]	DONG C F,LIU Z Y,LI X G,et al. Effects of hydrogen-charging on the susceptibility of X100 pipeline steel to hydrogen-induced cracking[J]. International Journal of Hydrogen Energy,2009,34(24):9879-9884.
[15]	曾小利,阚文彬,潘红良. 电化学渗透技术对304不锈钢中氢扩散的研究[J]. 石油化工腐蚀与防护,2010,27(4):15-16,20.
[16]	CHENG X Y,ZHANG X Y,ZHANG H X. The influence of hydrogen on deformation under the elastic stress in mooring chain steel[J]. Materials Science and Engineering:A,2018,730:295-302.
[17]	丛慧,谌继明,刘锦云,等. 钒合金的氢释放和室温蠕变[J]. 理化检验(物理分册),2006,42(2):55-59.
[18]	王富强,王磊,刘杨,等. GH690合金的氢致脆性行为研究[J]. 郑州大学学报(工学版),2009,30(1):34-38.
[19]	ROBERTSON I M. The effect of hydrogen on dislocation dynamics[J]. Engineering Fracture Mechanics,2001,68(6):671-692.
[20]	刘萍,陈忠家. 塑性变形中的位错动力学研究[J]. 合肥工业大学学报(自然科学版),2011,34(3):341-345.