Microstructure and corrosion behaviour of wire arc additive manufactured AA2024 alloy thin wall structure

Xinxin Zhang; You Lv; Sihan Tan; Zehua Dong; Xiaorong Zhou

doi:10.1016/j.corsci.2021.109453

Microstructure and corrosion behaviour of wire arc additive manufactured AA2024 alloy thin wall structure

Xinxin Zhang, You Lv, Sihan Tan, Zehua Dong, Xiaorong Zhou

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Abstract

In the present work, the microstructure and corrosion behaviour of wire arc additive manufactured (WAAM) AA2024 alloy thin wall structure are investigated. Three distinctive zones are present in the WAAM structure, including melt pool zone (MPZ), melt pool border (MPB) and heat affected zone (HAZ). Localized corrosion initiates at the multi-phase lamellar eutectic structure via de-alloying of S-phase (Al2CuMg) intermetallics. MPB is most susceptible to localized corrosion due to its relatively high volume fraction of eutectic S-phase resulted from alloying elements segregation during solidification.

Original language	English
Article number	109453
Journal	Corrosion Science
Volume	186
Early online date	8 Apr 2021
DOIs	https://doi.org/10.1016/j.corsci.2021.109453
Publication status	Published - 1 Jul 2021

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10.1016/j.corsci.2021.109453

AAMAccepted author manuscript, 3.39 MBLicence: CC BY-NC-ND

https://linkinghub.elsevier.com/retrieve/pii/S0010938X21002195

LightForm: Embedding Materials Engineering in Manufacturing with Light Alloys
Prangnell, P., Curioni, M., Haigh, S., Quinta Da Fonseca, J., Robson, J., Shanthraj, P. & Zhou, X.
1/10/17 → 18/10/23
Project: Research
Future Liquid Metal Engineering Hub
Zhou, X.
1/11/15 → 31/10/23
Project: Research

Cite this

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title = "Microstructure and corrosion behaviour of wire arc additive manufactured AA2024 alloy thin wall structure",

abstract = "In the present work, the microstructure and corrosion behaviour of wire arc additive manufactured (WAAM) AA2024 alloy thin wall structure are investigated. Three distinctive zones are present in the WAAM structure, including melt pool zone (MPZ), melt pool border (MPB) and heat affected zone (HAZ). Localized corrosion initiates at the multi-phase lamellar eutectic structure via de-alloying of S-phase (Al2CuMg) intermetallics. MPB is most susceptible to localized corrosion due to its relatively high volume fraction of eutectic S-phase resulted from alloying elements segregation during solidification.",

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T1 - Microstructure and corrosion behaviour of wire arc additive manufactured AA2024 alloy thin wall structure

AU - Zhang, Xinxin

AU - Lv, You

AU - Tan, Sihan

AU - Dong, Zehua

AU - Zhou, Xiaorong

PY - 2021/7/1

Y1 - 2021/7/1

N2 - In the present work, the microstructure and corrosion behaviour of wire arc additive manufactured (WAAM) AA2024 alloy thin wall structure are investigated. Three distinctive zones are present in the WAAM structure, including melt pool zone (MPZ), melt pool border (MPB) and heat affected zone (HAZ). Localized corrosion initiates at the multi-phase lamellar eutectic structure via de-alloying of S-phase (Al2CuMg) intermetallics. MPB is most susceptible to localized corrosion due to its relatively high volume fraction of eutectic S-phase resulted from alloying elements segregation during solidification.

AB - In the present work, the microstructure and corrosion behaviour of wire arc additive manufactured (WAAM) AA2024 alloy thin wall structure are investigated. Three distinctive zones are present in the WAAM structure, including melt pool zone (MPZ), melt pool border (MPB) and heat affected zone (HAZ). Localized corrosion initiates at the multi-phase lamellar eutectic structure via de-alloying of S-phase (Al2CuMg) intermetallics. MPB is most susceptible to localized corrosion due to its relatively high volume fraction of eutectic S-phase resulted from alloying elements segregation during solidification.

U2 - 10.1016/j.corsci.2021.109453

DO - 10.1016/j.corsci.2021.109453

M3 - Article

SN - 0010-938X

VL - 186

JO - Corrosion Science

JF - Corrosion Science

M1 - 109453

ER -

Microstructure and corrosion behaviour of wire arc additive manufactured AA2024 alloy thin wall structure

Abstract

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LightForm: Embedding Materials Engineering in Manufacturing with Light Alloys

Future Liquid Metal Engineering Hub

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