Atom probe tomography study of the nanoscale heterostructure around an Al20Mn3Cu2 dispersoid in aluminum alloy 2024

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 allo...

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Veröffentlicht in:Langmuir : the ACS journal of surfaces and colloids. - 1999. - 30(2014), 49 vom: 16. Dez., Seite 14817-23
1. Verfasser: Parvizi, Reza (VerfasserIn)
Weitere Verfasser: Marceau, Ross K W, Hughes, Anthony E, Tan, Mike Y, Forsyth, Maria
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2014
Zugriff auf das übergeordnete Werk:Langmuir : the ACS journal of surfaces and colloids
Schlagworte:Journal Article
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520 |a 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 
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700 1 |a Hughes, Anthony E  |e verfasserin  |4 aut 
700 1 |a Tan, Mike Y  |e verfasserin  |4 aut 
700 1 |a Forsyth, Maria  |e verfasserin  |4 aut 
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