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Effect of precipitate coherency on the corrosion-induced hydrogen trapping in 2024 aluminum alloy

dc.creatorKamoutsi H., Haidemenopoulos G.N., Mavros H., Karantonidis C., Floratos P., Alhosani Z., Cho P., Anjum D.H., Ravaux F., Polychronopoulou K.en
dc.date.accessioned2023-01-31T08:29:56Z
dc.date.available2023-01-31T08:29:56Z
dc.date.issued2021
dc.identifier10.1016/j.ijhydene.2021.08.005
dc.identifier.issn03603199
dc.identifier.urihttp://hdl.handle.net/11615/74246
dc.description.abstractHydrogen trapping is one of the factors leading to hydrogen embrittlement in heat-treatable high-strength aluminum alloys. The effect of coherency of precipitates on the corrosion-induced hydrogen trapping in aluminum alloy 2024 was investigated by performing artificial aging treatments before corrosion exposure. Two aging temperatures were employed, 170 and 210 °C, for aging times spanning the underaged, peak-aged and overaged conditions. Hydrogen uptake was induced by exfoliation corrosion. Hydrogen evolution from trapping sites was followed by thermal desorption spectroscopy. High resolution transmission electron microscopy combined with geometric phase analysis was performed to analyze the coherency of the precipitates. The results indicated that the coherency state between precipitates and the matrix plays an important role in hydrogen trapping. Hydrogen evolving at 300 °C (T2 state) corresponds to hydrogen trapped by the stress fields of coherent GPB zones and S΄΄ (Al10Cu3Mg3) phases, which form at aging temperatures, below the corresponding solvus temperature. © 2021 Hydrogen Energy Publications LLCen
dc.language.isoenen
dc.sourceInternational Journal of Hydrogen Energyen
dc.source.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85113397235&doi=10.1016%2fj.ijhydene.2021.08.005&partnerID=40&md5=2bfd097e9ce97ed23c88e74c253d5ee8
dc.subjectAluminum corrosionen
dc.subjectCopper alloysen
dc.subjectHigh resolution transmission electron microscopyen
dc.subjectHigh strength alloysen
dc.subjectMagnesium alloysen
dc.subjectTernary alloysen
dc.subject2024 alloyen
dc.subject2024 aluminium alloysen
dc.subjectAgeing treatmentsen
dc.subjectAging temperaturesen
dc.subjectAlloy 2024en
dc.subjectArtificial aging treatmentsen
dc.subjectCoherent precipitatesen
dc.subjectHigh strength aluminium alloysen
dc.subjectHydrogen trappingen
dc.subjectPrecipitate coherencyen
dc.subjectAluminum alloysen
dc.subjectElsevier Ltden
dc.titleEffect of precipitate coherency on the corrosion-induced hydrogen trapping in 2024 aluminum alloyen
dc.typejournalArticleen


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