Integrated Computational Materials, Process and Product Engineering – IC-MPPE 2022

The aim of this work is to calculate local hydrogen concentrations in high-strength steel fasteners. For quantification, both, the trap densities and binding energies must be known. We present a process and microstructure sensitive model to quantify trap densities and corresponding binding energies to study of the distribution of hydrogen and local concentrations within the component. With this method products with increased hydrogen resistivity can be invented, e.g. by applying the so-called ”beneficial trapping” concept where energetically favorable ”traps” extract hydrogen from the interstitial lattice (mobile hydrogen) and consequently hinder its adverse effects.