New insights into hydrogen trapping and embrittlement in high strength aluminum alloys

Journal article (2023)

Authors

Mahdieh Safyari Tohoku University, Montan University of Leoben, Austrian Institute of Technology
N. Khossossi Team Poulumi Dey - Mechanical, Maritime and Materials Engineering
Thomas Meisel Montan University of Leoben
Poulumi Dey Team Poulumi Dey - Mechanical, Maritime and Materials Engineering
P. Dey Team Poulumi Dey - Mechanical, Maritime and Materials Engineering
Thomas Prohaska Montan University of Leoben
Masoud Moshtaghi Montan University of Leoben
Research Group
Team Poulumi Dey (Mechanical, Maritime and Materials Engineering) (TU Delft)
Copyright: © 2023 Mahdieh Safyari, N. Khossossi, Thomas Meisel, P. Dey, Thomas Prohaska, Masoud Moshtaghi
DOI: https://doi.org/10.1016/j.corsci.2023.111453
More Info
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Published Date

2023

Language

English

Faculty

Mechanical, Maritime and Materials Engineering

Department

Materials Science and Engineering

Research Group

Team Poulumi Dey

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.