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Effect of hydrogen charging time on hydrogen blister and hydrogen-induced cracking of pure iron
Corrosion Science ( IF 7.4 ) Pub Date : 2021-01-12 , DOI: 10.1016/j.corsci.2020.109200
Xinfeng Li , Weihong Huang , Xubin Wu , Jin Zhang , Yao Wang , Eiji Akiyama , Dewen Hou

Hydrogen blister (HB) and hydrogen-induced cracking (HIC) of pure iron at various charging times were investigated. The results show that an increase in charging time leads to the increased HB height/width and HIC length/depth, and a change in hydrogen damage morphology. Subsurface HIC initiates and propagates along the grain boundaries, which makes the surface bend outwards to form blister on blister features, suggesting grain boundary cracking-induced blister-blister interaction mechanism. Crystallographic analysis demonstrates that adjacent grain boundary oriented-{100}//ND and {110}//ND exhibits the highest susceptibility to HIC, which offers a pathway to design hydrogen-resistant structural steels through the control of grain boundary.



中文翻译:

充氢时间对纯铁氢起泡和氢致裂化的影响

研究了在不同装料时间下纯铁的氢起泡(HB)和氢致裂化(HIC)。结果表明,充电时间的增加导致HB高度/宽度和HIC长度/深度的增加,以及氢损伤形态的改变。地下HIC沿晶界引发并传播,这使表面向外弯曲,在水泡特征上形成水泡,表明晶界开裂诱导了水泡与水泡的相互作用机制。晶体学分析表明,取向为{100} // ND和{110} // ND的相邻晶界对HIC的敏感性最高,这为通过控制晶界设计耐氢结构钢提供了途径。

更新日期:2021-01-13
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