Atom probe tomography study of the nanoscale heterostructure around an Al20Mn3Cu2 dispersoid in aluminum alloy 2024.
Data(s) |
16/12/2014
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Resumo |
Atom probe tomography (APT) has been used to investigate the surface and sub-surface microstructures of aluminum alloy 2024 (AA2024) in the T3 condition (solution heat treated, cold worked, and naturally aged to a substantially stable condition). This study revealed surface Cu enrichment on the alloy matrix, local chemical structure around a dispersoid Al20Mn3Cu2 particle including a Cu-rich particle and S-phase particle on its external surface. Moreover, there was a significant level of hydrogen within the dispersoid, indicating that it is a hydrogen sink. These observations of the nanoscale structure around the dispersoid particle have considerable implications for understanding both corrosion and hydrogen embrittlement in high-strength aluminum alloys. |
Identificador | |
Idioma(s) |
eng |
Publicador |
American Chemical Society |
Relação |
http://dro.deakin.edu.au/eserv/DU:30069589/parvizi-atomprobetomography-2014.pdf http://www.dx.doi.org/10.1021/la503418u http://www.ncbi.nlm.nih.gov/pubmed/25415412 |
Palavras-Chave | #Science & Technology #Physical Sciences #Technology #Chemistry, Multidisciplinary #Chemistry, Physical #Materials Science, Multidisciplinary #Chemistry #Materials Science #CU-MG ALLOYS #INDUCED HYDROGEN EMBRITTLEMENT #LOCALIZED CORROSION #ELECTROCHEMICAL NOISE #DISSOLUTION PHENOMENA #PHASE #AA2024-T3 #METALS #INHIBITORS #COATINGS |
Tipo |
Journal Article |