摘要
Ｆ０７４．５Ｎｉ１０Ｓｉ３．５Ｂ９Ｃ２非晶带在恒载荷动态充氢时能发生氢致滞后断裂． 测量了不同充氢电流密度ｉ下的氢致滞后断裂归一化门槛应力σＨＩＣ／σＦ，以及进入试样的氢浓度Ｃ０．结果表明． 当Ｃ０≤６７．４ × １０－４％时．σＨＩＣ／σＦ随ｌｎＣ０上升成线性下降．即σＨＩＣ／σＦ＝１．５９－０．３５ Ｉｎ Ｃ０：当Ｃ０＞６７．４×１０－４％后，σＨＩＣ／σＦ＝≤０．１，由于实验精度的限制无法测出真实的σＨＩＣ／σＦ值．
Hydrogen-induced delayed fracture of amorphous alloy Fe74.5Ni10Si3.5B9C2 could occur during dynamically charging under constant load. The threshold stress of hydrogen-induced delayed fracture, sigma(HIC), and, corresponding hydrogen concentration, C-0, during charging at various current densities have been measured. The result showed that sigma(HIC) decreased linearly with increasing of ln C-0 when C-0 less than or equal to 67.4 x 10(-4)%, i.g. sigma(HIC)/sigma(F)=1.59 - 0.35 ln C-0, where sigma(F) is the fracture stress extended in air. When C-0 > 67.4 x 10(-4)%, sigma(HIC)/sigma(F) less than or equal to0.1 and can't be exactly measured because of limit of experiment precision.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
2002年第1期91-94,共4页
Acta Metallurgica Sinica
基金
国家基础研究规划资助项目 G19990650
教育部重点资助项目
关键词
非晶合金
氢致滞后断裂
门槛应力
Fe74.5Ni10Si3.5B9C2
amorphous alloy
hydrogen-induced delayed fracture
threshold stress
