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The effect of the pre-strain on hydrogen embrittlement (HE) of high strength steels was investigated by slow strain-rate tensile (SSRT). The specimens were electrochemically hydrogen-charged in 0.5mol/L H2SO4 with 1g/L CH4N2S at room temperature for 24h. It is found that the amount of hydrogen increases linearly with the exponent of pre-strain, i.e., CH=11.963+0.00385exp(1.144εP). The HE susceptibility...
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