Hydrogen Trapping Phenomenon at Grain Boundaries in a 18Ni Maraging Steel
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG1990年第3期
论文作者：姚大平 陈文绣
文章页码：200 - 205
摘 要：<正> An investigation of the phenomenon ofhydrogen trapping at grain boundaries in 18 Nimaraging steel has been carried out by the thermalhydrogen evolution technique.Grain boundary on-ly acts as a trapping site of hydrogen at low temper-ature region,and the peak of its hydrogen evolutionfrom it is observed at 405K with 3.00K/rain heat-ing rate and with specimen of 0.55mm thick.Thetrap activation energy of hydrogen escaped fromgrain boundary is estimated as 14.2kJ/mol.Hydrogen trapping at grain boundary is mainly associated with segregated hydrogen by impurities,and its behaviour is primarily the interaction be-tween hydrogen and the hydrostatic stress field ofthe grain boundary.
姚大平，陈文绣
摘 要：<正> An investigation of the phenomenon ofhydrogen trapping at grain boundaries in 18 Nimaraging steel has been carried out by the thermalhydrogen evolution technique.Grain boundary on-ly acts as a trapping site of hydrogen at low temper-ature region,and the peak of its hydrogen evolutionfrom it is observed at 405K with 3.00K/rain heat-ing rate and with specimen of 0.55mm thick.Thetrap activation energy of hydrogen escaped fromgrain boundary is estimated as 14.2kJ/mol.Hydrogen trapping at grain boundary is mainly associated with segregated hydrogen by impurities,and its behaviour is primarily the interaction be-tween hydrogen and the hydrostatic stress field ofthe grain boundary.
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