本文作者就慢应变速率拉伸条件下工业纯铁试样的氢渗透进行了研究,并将片状,棒状试样的不同实验方法加以比较。结果表明:片状与棒状试样的衰减曲线具有完全相同的规律。在拉伸条件下,表观扩散系数D被考虑为应变ε的函数,使用拟牛顿迭代法可求得非线性方程组的解,并因而可求得D值。 The authors studied the hydrogen permeation of industrial pure iron samples under slow strain rate stretching conditions and compared the different experimental methods of sheet and rod specimens. The results show that the decay curve of sheet and rod specimens have exactly the same rule. Under tensile conditions, the apparent diffusion coefficient D is considered as a function of the strain ε, and the solution of the system of nonlinear equations can be obtained using the Quasi-Newton iteration method and thus the D value can be obtained.