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.
Permeability, diffusivity and solubility of hydrogen in austenitic stain-less steels 316L, 316LN, 21-6-9, 21-9-9, 304 and 1Cr18Ni9Ti have been measuredby gaseous permeation technique over the temperature range of 200 to 430℃. Theeffects of composition, cold-work and heat treatment on hydrogen petmeation havebeen investigated. The results indicate that permeability and diffusivity of hydro-gen in various alloys over the experimental temperature range follow arrheniusequations and hydrogen permeation behaviour is not obviously influenced by cold-work and heat treatment of materials, but slightly influenced by the composition.The difference of hydrogen permeation behaviour between pure iron, low alloysteels and austenitic stainless steels has also been discussed.
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