The Influence of Thermomechanical Treatment on the Corrosion Behaviour of 2a97 Al-Cu-Li Alloy

You Lv; Teruo Hashimoto; Xinxin Zhang; Xiaorong Zhou

doi:10.1016/j.corcom.2023.10.003

The Influence of Thermomechanical Treatment on the Corrosion Behaviour of 2a97 Al-Cu-Li Alloy

You Lv, Teruo Hashimoto, Xinxin Zhang, Xiaorong Zhou

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

Abstract

In the present work, the corrosion behaviour of 2A97 Al-Cu-Li alloy with different thermomechanical treatments is investigated using electron microscopy and electrochemical measurements. The various thermomechanical treatments allowed the assessing of the individual and synergistic influence of local plastic deformation and precipitation on the corrosion susceptibility and mechanism of the alloy. It is found thatin NaCl solution, corrosion of the alloys in T3 and T4 tempers occurs in the form of intergranular corrosion, which is closely associated with stored energy distribution. By contrast, the alloys in T6 and T8 tempers exhibit mainly intragranular corrosion due to high volume fractions of precipitates formed by artificial ageing.

Original language	English
Journal	Corrosion Communications
DOIs	https://doi.org/10.1016/j.corcom.2023.10.003
Publication status	Published - 1 May 2024

Keywords

Al-Cu-Li alloy
Intergranular Corrosion
Intragranular Corrosion
Thermomechanical treatment
Grain-stored energy

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10.1016/j.corcom.2023.10.003

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title = "The Influence of Thermomechanical Treatment on the Corrosion Behaviour of 2a97 Al-Cu-Li Alloy",

abstract = "In the present work, the corrosion behaviour of 2A97 Al-Cu-Li alloy with different thermomechanical treatments is investigated using electron microscopy and electrochemical measurements. The various thermomechanical treatments allowed the assessing of the individual and synergistic influence of local plastic deformation and precipitation on the corrosion susceptibility and mechanism of the alloy. It is found thatin NaCl solution, corrosion of the alloys in T3 and T4 tempers occurs in the form of intergranular corrosion, which is closely associated with stored energy distribution. By contrast, the alloys in T6 and T8 tempers exhibit mainly intragranular corrosion due to high volume fractions of precipitates formed by artificial ageing.",

keywords = "Al-Cu-Li alloy, Intergranular Corrosion, Intragranular Corrosion, Thermomechanical treatment, Grain-stored energy",

author = "You Lv and Teruo Hashimoto and Xinxin Zhang and Xiaorong Zhou",

year = "2024",

month = may,

day = "1",

doi = "10.1016/j.corcom.2023.10.003",

language = "English",

journal = "Corrosion Communications",

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T1 - The Influence of Thermomechanical Treatment on the Corrosion Behaviour of 2a97 Al-Cu-Li Alloy

AU - Lv, You

AU - Hashimoto, Teruo

AU - Zhang, Xinxin

AU - Zhou, Xiaorong

PY - 2024/5/1

Y1 - 2024/5/1

N2 - In the present work, the corrosion behaviour of 2A97 Al-Cu-Li alloy with different thermomechanical treatments is investigated using electron microscopy and electrochemical measurements. The various thermomechanical treatments allowed the assessing of the individual and synergistic influence of local plastic deformation and precipitation on the corrosion susceptibility and mechanism of the alloy. It is found thatin NaCl solution, corrosion of the alloys in T3 and T4 tempers occurs in the form of intergranular corrosion, which is closely associated with stored energy distribution. By contrast, the alloys in T6 and T8 tempers exhibit mainly intragranular corrosion due to high volume fractions of precipitates formed by artificial ageing.

AB - In the present work, the corrosion behaviour of 2A97 Al-Cu-Li alloy with different thermomechanical treatments is investigated using electron microscopy and electrochemical measurements. The various thermomechanical treatments allowed the assessing of the individual and synergistic influence of local plastic deformation and precipitation on the corrosion susceptibility and mechanism of the alloy. It is found thatin NaCl solution, corrosion of the alloys in T3 and T4 tempers occurs in the form of intergranular corrosion, which is closely associated with stored energy distribution. By contrast, the alloys in T6 and T8 tempers exhibit mainly intragranular corrosion due to high volume fractions of precipitates formed by artificial ageing.

KW - Al-Cu-Li alloy

KW - Intergranular Corrosion

KW - Intragranular Corrosion

KW - Thermomechanical treatment

KW - Grain-stored energy

U2 - 10.1016/j.corcom.2023.10.003

DO - 10.1016/j.corcom.2023.10.003

M3 - Article

SN - 2667-2669

JO - Corrosion Communications

JF - Corrosion Communications

ER -

The Influence of Thermomechanical Treatment on the Corrosion Behaviour of 2a97 Al-Cu-Li Alloy

Abstract

Keywords

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