Abstract Understanding hydrogen embrittlement in steels requires research in hydrogen diffusion and trapping at microstructural defects. The present paper deals with hydrogen permeation and trapping at defects in the base material, Armco iron, eliminating effects coupled with alloying and precipitation. Cycled permeation curves are recorded and evaluated by using sound diffusion models to identify hydrogen trap sites as dislocations, grain boundaries and vacancies and assign their trapping energies. Furthermore, trap densities are evaluated and used together with the trapping energies as parameters in an adapted diffusion equation for hydrogen, interpreting the experiments significantly better than simple use of classical Fick’s laws.

中文翻译：

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通过 Armco 铁循环氢渗透——一种联合实验和建模方法

摘要 了解钢中的氢脆需要研究氢扩散和微观结构缺陷处的俘获。本论文涉及氢渗透和在基材 Armco 铁中的缺陷处捕获，消除与合金化和沉淀相关的影响。通过使用声音扩散模型来记录和评估循环渗透曲线，以将氢俘获位点识别为位错、晶界和空位，并分配它们的俘获能量。此外，陷阱密度被评估并与俘获能量一起用作氢的适应扩散方程中的参数，比简单使用经典菲克定律更好地解释实验。