The Role of Precipitates in Hydrogen Embrittlement of Precipitation-Hardenable Aluminum Alloys
Terezie Košová Altnerová,
Darja Rudomilova,
Pavel Novák,
Tomáš Prošek
Affiliations
Terezie Košová Altnerová
Department of Metallic Materials, University of Chemistry and Technology Prague, Technopark Kralupy, Nám. G. Karse 7, 278 01 Kralupy nad Vltavou, Czech Republic
Darja Rudomilova
Department of Metallic Materials, University of Chemistry and Technology Prague, Technopark Kralupy, Nám. G. Karse 7, 278 01 Kralupy nad Vltavou, Czech Republic
Pavel Novák
Department of Metallic Materials and Corrosion Engineering, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague, Czech Republic
Tomáš Prošek
Department of Metallic Materials, University of Chemistry and Technology Prague, Technopark Kralupy, Nám. G. Karse 7, 278 01 Kralupy nad Vltavou, Czech Republic
This review examines hydrogen embrittlement (HE) in precipitation-hardenable aluminum alloys, focusing on the role of precipitates as hydrogen traps. It covers hydrogen entry mechanisms, the effects of microstructural features such as dislocations and grain boundaries, and secondary phase evolution during heat treatment. The interaction between hydrogen and precipitates, including the role of coherent and incoherent interfaces, is analyzed in view of the impact on HE susceptibility. Various techniques used to assess the interaction between hydrogen and aluminum alloys are also compared. The goal is to summarize the state-of-the-art understanding of the microstructural factors influencing the resistance of aluminum alloys to HE.
