New insights into hydrogen trapping and embrittlement in high strength aluminum alloys
Mahdieh Safyari (AIT Austrian Institute of Technology, Montan University of Leoben, Tohoku University)
Nabil Khossossi (TU Delft - Team Poulumi Dey)
Thomas Meisel (Montan University of Leoben)
Poulumi Dey (TU Delft - Team Poulumi Dey)
Thomas Prohaska (Montan University of Leoben)
Masoud Moshtaghi (Montan University of Leoben)
More Info
expand_more
Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.
Abstract
An attractive approach to mitigate hydrogen embrittlement (HE) is to use nano-sized particles to immobilize hydrogen. However, the atomic scale relationship between different particle-matrix characteristics in aluminum alloys and the susceptibility to HE is unknown. In this study, the effects of interactions between various interfaces and hydrogen in aluminum alloys are investigated using a comprehensive multiscale experimental and simulation-based approach that includes atomic-scale observations, simulation and advanced hydrogen mapping techniques. Depending on the nature of interfaces, e.g., coherency, size, and crystal structure, some are useful for mitigating HE, others provide hydrogen to sensitive sites, and some act as crack initiation sites.
help_outline