Electrochemical Characteristics of Intermetallic Phases in Al–Cu–Li Alloys

Electrochemical Characteristics of Intermetallic Phases in Al–Cu–Li Alloys

This study provides a comprehensive overview of the electrochemical characteristics of intermetallic compounds (IMCs) commonly encountered in the 3rd generation Al–Cu–Li alloys. The electrochemical measurements were carried out on a AA2070-T8 alloy and surrogate alloys that have the compositions of...

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Veröffentlicht in:Journal of the Electrochemical Society 2023-02, Vol.170 (2), p.21502
Hauptverfasser: Zhu, Yakun, Frankel, Gerald S., (Bland) Miller, Leslie G., Garves, Jacob, Pope, Jackson, (Warner) Locke, Jenifer
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container_issue 2
container_start_page 21502
container_title Journal of the Electrochemical Society
container_volume 170
creator Zhu, Yakun
Frankel, Gerald S.
(Bland) Miller, Leslie G.
Garves, Jacob
Pope, Jackson
(Warner) Locke, Jenifer
description This study provides a comprehensive overview of the electrochemical characteristics of intermetallic compounds (IMCs) commonly encountered in the 3rd generation Al–Cu–Li alloys. The electrochemical measurements were carried out on a AA2070-T8 alloy and surrogate alloys that have the compositions of select IMCs, typically found in AA2070-T8. The effects of environmental variables such as [Cl − ] and pH on the corrosion potential, pitting potential, repassivation potential, corrosion rate, and galvanic current of these IMCs were thoroughly evaluated utilizing the electrochemical microcell method. An electrochemical database was documented that covers eight groups of common IMCs in various Al alloys. The findings improve the understanding of interactions between matrix and IMCs in Al alloys, with implications for corrosion mitigation and new materials design.
doi_str_mv 10.1149/1945-7111/acb6bb
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title Electrochemical Characteristics of Intermetallic Phases in Al–Cu–Li Alloys
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