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本工作采用超高真空-气相渗透技术,在200—430℃范围内,测定了氢在316L,316LN,21-6-9,21-9-9,304和1Cr18Ni9Ti等六种奥氏体不锈钢中的渗透率、扩散系数和溶解度常数,研究了合金成分和材料的冷加工、热处理状态对氢渗透行为的影响.结果指出,氢在各合金中的渗透率和扩散系数在实验温度范围内均遵循Arrhenius方程,材料的冷加工和热处理状态对氢渗透行为没有明显影响,合金成分略有影响.讨论了奥氏体不锈钢与纯铁、一般低合金钢氢渗透行为的差别.
In this work, ultrahigh vacuum-gas phase infiltration technique was used to measure the permeation of hydrogen in six kinds of austenitic stainless steels such as 316L, 316LN, 21-6-9, 21-9-9, 304 and 1Cr18Ni9Ti at 200-430 ℃ The diffusion coefficients and the solubility constants of the alloy were investigated.The effects of cold working and heat treatment on the hydrogen permeation behavior were studied.The results show that the permeability and diffusion coefficient of hydrogen follow the Arrhenius equation in the experimental temperature range, The cold working and heat treatment of the material have no obvious effect on the hydrogen permeation behavior, and the composition of the alloy slightly affects the differences of hydrogen permeation between austenitic stainless steel and pure iron and low alloy steel.