DISTRIBUTION OF HYDROGEN CONCENTRATION NEAR NOTCH TIP UNDER MODE I LOADING
WU Shiding;CHEN Lian;LIU Minzhi Institute of Metal Research; Academia Sinica; Shenyang Chengdu University of Science and Technology Institute of Metal Research;Academia Sinica;Shenyang 110015
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WU Shiding;CHEN Lian;LIU Minzhi Institute of Metal Research; Academia Sinica; Shenyang Chengdu University of Science and Technology Institute of Metal Research;Academia Sinica;Shenyang 110015. DISTRIBUTION OF HYDROGEN CONCENTRATION NEAR NOTCH TIP UNDER MODE I LOADING. Acta Metall Sin, 1990, 26(2): 10-15.
Abstract The distribution of hydrogen concentration near the notch tip of theaustenitic steel 21Cr9Ni9MnN under model Ⅰ loading has been studied by Ion Micro-probe Mass Analyser. Experimenial results show that two peaks of hydrogen accu-mulation, one at notch tip and other far apart from it, are found. The distributionof hydrostatic stress and plastic strain in front of the notch tip under planar stresscondition was calculated using ADINA non-linear finite element method. The calcu-lated result in comparison with data measured showed that the hydrogen concentra-tion peak at the notch tip is caused by trapping effect of dislocation on dissolvedhydrogen, while the other from the hydrostatic stress. The influence of stress in-tensity factor on the distribution of hydrogen concentration and the process of hy-drogen accumulation near notch tip was also discussed.
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WANG Li; CHEN Lian(Institute of Metal Research; Chinese Academy of Sciences;Liaoning Key Laboratory for Materials and Hydrogen;Shenyang 110015)(Manuscript recieved 1994-06-25; in revised form 1995-01-16). DOUBLE PEAK OF HYDROGEN ACCUMULATION NEAR NOTCH TIP UNDER Ⅰ＋Ⅱ LOADING MODE[J]. 金属学报, 1995, 31(10): 461-468.
