Quasi in situ analytical TEM to investigate electrochemically induced microstructural changes in alloys: AA2024-T3 as an example

SRK Malladi; FD Tichelaar; Q Xu; MY Wu; H. Terryn; JMC Mol; F Hannour; HW Zandbergen

doi:10.1016/j.corsi.2012.12.006

Quasi in situ analytical TEM to investigate electrochemically induced microstructural changes in alloys: AA2024-T3 as an example

SRK Malladi, FD Tichelaar, Q Xu, MY Wu, H. Terryn, JMC Mol, F Hannour, HW Zandbergen

Research output: Contribution to journal › Article › Scientific › peer-review

31 Citations (Scopus)

Abstract

A quasi in situ method using a specially developed holder is presented to follow electrochemically induced microstructural changes on a nanometre scale using analytical transmission electron microscopy (TEM). By following a specific specimen area after repeated exposure to oxygen bubbled through aqueous HCI of pH = 3, de-alloying of a grain-boundary precipitate of similar to 200 nm was observed by monitoring the changes in the EELS copper L-2,L-3-edge and EFTEM elemental maps. These results, supporting the existing models of de-alloying of copper rich precipitates in aluminium alloys, demonstrate the effectiveness of the quasi in situ specimen holder for analytical TEM studies of corrosion.

Original language	Undefined/Unknown
Pages (from-to)	221-225
Number of pages	5
Journal	Corrosion Science: the journal on environmental degradation of materials and its control
Volume	69
DOIs	https://doi.org/10.1016/j.corsi.2012.12.006
Publication status	Published - 2013

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10.1016/j.corsi.2012.12.006

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Malladi, SRK., Tichelaar, FD., Xu, Q., Wu, MY., Terryn, H., Mol, JMC., Hannour, F., & Zandbergen, HW. (2013). Quasi in situ analytical TEM to investigate electrochemically induced microstructural changes in alloys: AA2024-T3 as an example. Corrosion Science: the journal on environmental degradation of materials and its control, 69, 221-225. https://doi.org/10.1016/j.corsi.2012.12.006

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abstract = "A quasi in situ method using a specially developed holder is presented to follow electrochemically induced microstructural changes on a nanometre scale using analytical transmission electron microscopy (TEM). By following a specific specimen area after repeated exposure to oxygen bubbled through aqueous HCI of pH = 3, de-alloying of a grain-boundary precipitate of similar to 200 nm was observed by monitoring the changes in the EELS copper L-2,L-3-edge and EFTEM elemental maps. These results, supporting the existing models of de-alloying of copper rich precipitates in aluminium alloys, demonstrate the effectiveness of the quasi in situ specimen holder for analytical TEM studies of corrosion.",

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Malladi, SRK, Tichelaar, FD, Xu, Q, Wu, MY, Terryn, H, Mol, JMC, Hannour, F & Zandbergen, HW 2013, 'Quasi in situ analytical TEM to investigate electrochemically induced microstructural changes in alloys: AA2024-T3 as an example', Corrosion Science: the journal on environmental degradation of materials and its control, vol. 69, pp. 221-225. https://doi.org/10.1016/j.corsi.2012.12.006

Quasi in situ analytical TEM to investigate electrochemically induced microstructural changes in alloys: AA2024-T3 as an example. / Malladi, SRK; Tichelaar, FD; Xu, Q et al.
In: Corrosion Science: the journal on environmental degradation of materials and its control, Vol. 69, 2013, p. 221-225.

Research output: Contribution to journal › Article › Scientific › peer-review

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T1 - Quasi in situ analytical TEM to investigate electrochemically induced microstructural changes in alloys: AA2024-T3 as an example

AU - Malladi, SRK

AU - Tichelaar, FD

AU - Xu, Q

AU - Wu, MY

AU - Terryn, H.

AU - Mol, JMC

AU - Hannour, F

AU - Zandbergen, HW

PY - 2013

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AB - A quasi in situ method using a specially developed holder is presented to follow electrochemically induced microstructural changes on a nanometre scale using analytical transmission electron microscopy (TEM). By following a specific specimen area after repeated exposure to oxygen bubbled through aqueous HCI of pH = 3, de-alloying of a grain-boundary precipitate of similar to 200 nm was observed by monitoring the changes in the EELS copper L-2,L-3-edge and EFTEM elemental maps. These results, supporting the existing models of de-alloying of copper rich precipitates in aluminium alloys, demonstrate the effectiveness of the quasi in situ specimen holder for analytical TEM studies of corrosion.

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DO - 10.1016/j.corsi.2012.12.006

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JO - Corrosion Science: the journal on environmental degradation of materials and its control

JF - Corrosion Science: the journal on environmental degradation of materials and its control

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