TY - JOUR

T1 - New insights into hydrogen trapping and embrittlement in high strength aluminum alloys

AU - Safyari, Mahdieh

AU - Khossossi, Nabil

AU - Meisel, Thomas

AU - Dey, Poulumi

AU - Prohaska, Thomas

AU - Moshtaghi, Masoud

PY - 2023/10

Y1 - 2023/10

N2 - 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.

AB - 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.

U2 - 10.1016/j.corsci.2023.111453

DO - 10.1016/j.corsci.2023.111453

M3 - Article

VL - 223.2023

JO - Corrosion science

JF - Corrosion science

SN - 0010-938X

IS - October

M1 - 111453

ER -