Hydrogen Permeation and Diffusion in Low-carbon Steels and 16Mn Steel

In the present work. the hydrogen permeation and diffusion in two low-carbon steels. # 10 and #20. and 16Mn stee1 over the temperature range of 80 to 330℃ were investigated using gaseous permeation technique. The temperature dependence of hydrogen permeability. diffusivity and solubility for the three steels was obtained in the form of the Arrhenius equations. It was shown that the hydrogen permeability of the 16Mn steel is somewhat lower than that of the two low-carbon steels.whereas the hydrogen diffusivity is lowered in the order of #10, #20 and 16Mn but the activation energy of diffusion is much the same for the three steels. The difference in the diffusivity was attributed to the increase of ferrite-cementite interface areas with the refinement of pearlitic structure in the steels

16Mn钢的氢渗透(Ⅱ)——表观氢扩散系数积分微分算法的验证及氢渗透对氢脆敏感性的影响

用电化学方法研究16Mn钢的氢渗透行为。结果表明,表观氢扩散系数的积分微分算法简便易行,适用范围广;塑性变形既能捕获氢,又可将捕获的氢释放,但使表观氢扩散系数减小;正火加回火态16Mn钢的抗氢脆性能的改善与其氢扩散活化能的降低,表观氢扩散系数的增大相对应。