摘要
系泊链对海洋平台的安全性起着重要的作用。本文用电化学氢渗透方法研究了560、600、640℃三种回火温度对系泊链钢氢扩散行为的影响。结果表明：可逆氢陷阱比不可逆氢陷阱对材料的表观扩散系数影响较大;随着回火温度的升高,氢的表观扩散系数增加,扩散通量增加,表观扩散激活能减小;随着渗透温度的增加,氢的表观扩散系数增加,穿透时间减小。
Mooring chain plays an important role in the safety of offshore platform. The effects of three tempering temperatures （560, 600 and 640 ℃ ） on hydrogen diffusion behavior of mooring chain steel were studied by electrochemical hydrogen permeation method. The results show that, the effect of reversible hydrogen trap on the apparent diffusion coefficient of the material is larger than that of irreversible hydrogen trap; with the increase of tempering temperature, the apparent diffusion coefficient of hydrogen increases, the diffusion flux increases, and the apparent diffusion activation energy decreases; with the increase of permeation temperature, the apparen[ diffusion coefficient of hydrogen increases and the breakthrough time decreases.
作者
苏令超
程晓英
张诗洋
SU Lingchao;CHENG Xiaoying;ZHANG Shiyang(Institute of Materials, Shanghai University, Shanghai 200072, China;Key Laboratory for Microstructures, Shanghai University, Shanghai 200444, China)
出处
《热加工工艺》
CSCD
北大核心
2018年第8期192-196,共5页
Hot Working Technology
基金
国家自然科学基金项目(51271108)
关键词
系泊链钢
电化学氢渗透
氢陷阱
表观扩散系数
回火温度
mooring chain steel
electrochemical hydrogen permeation
hydrogen trap
apparent diffusion coefficient
tempering temperature
