Grain-stored energy and the propagation of intergranular corrosion in AA2xxx aluminium alloys

X. Zhou; C. Luo; Y. Ma; T. Hashimoto; G. E. Thompson; A. E. Hughes; P. Skeldon

doi:10.1002/sia.5218

Grain-stored energy and the propagation of intergranular corrosion in AA2xxx aluminium alloys

X. Zhou
, C. Luo
, Y. Ma
, T. Hashimoto
, G. E. Thompson
, A. E. Hughes
, P. Skeldon

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

Abstract

In the present study, intergranular corrosion (IGC) in AA2024 and AA2099 aluminium alloys was investigated. The IGC propagation path was examined using scanning and transmission electron microscopies. Further, electron backscatter diffraction was employed to investigate the relationship between the grain structure and the IGC susceptibility. It was found that IGC could occur at grain boundaries where second phase precipitates were absent. It was also revealed that IGC occurred at the grain boundaries that surround grains of relatively high-stored energy, and corrosion was not confined within the region immediately adjacent to the grain boundaries but had developed into the grains of relatively high-stored energy, suggesting that IGC propagated within the grains that have relatively high levels of defects. Copyright © 2013 John Wiley & Sons, Ltd. Copyright © 2013 John Wiley & Sons, Ltd.

Original language	English
Pages (from-to)	1543-1547
Number of pages	4
Journal	Surface and Interface Analysis
Volume	45
Issue number	10
DOIs	https://doi.org/10.1002/sia.5218
Publication status	Published - Oct 2013

Keywords

aluminium alloy
grain-stored energy
intergranular corrosion
lithium

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10.1002/sia.5218

Light Alloys towards environmentally sustainable transport: 2nd generation solutions for Advanced Metallic Systems ( LATEST 2 )
Thompson, G. (PI), Bate, P. (CoI), Prangnell, P. (CoI), Preuss, M. (CoI), Quinta Da Fonseca, J. (CoI), Robson, J. (CoI), Skeldon, P. (CoI) & Zhou, X. (CoI)
1/02/10 → 31/07/15
Project: Research

Cite this

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title = "Grain-stored energy and the propagation of intergranular corrosion in AA2xxx aluminium alloys",

abstract = "In the present study, intergranular corrosion (IGC) in AA2024 and AA2099 aluminium alloys was investigated. The IGC propagation path was examined using scanning and transmission electron microscopies. Further, electron backscatter diffraction was employed to investigate the relationship between the grain structure and the IGC susceptibility. It was found that IGC could occur at grain boundaries where second phase precipitates were absent. It was also revealed that IGC occurred at the grain boundaries that surround grains of relatively high-stored energy, and corrosion was not confined within the region immediately adjacent to the grain boundaries but had developed into the grains of relatively high-stored energy, suggesting that IGC propagated within the grains that have relatively high levels of defects. Copyright {\textcopyright} 2013 John Wiley \& Sons, Ltd. Copyright {\textcopyright} 2013 John Wiley \& Sons, Ltd.",

keywords = "aluminium alloy, grain-stored energy, intergranular corrosion, lithium",

author = "X. Zhou and C. Luo and Y. Ma and T. Hashimoto and Thompson, \{G. E.\} and Hughes, \{A. E.\} and P. Skeldon",

year = "2013",

month = oct,

doi = "10.1002/sia.5218",

language = "English",

volume = "45",

pages = "1543--1547",

journal = "Surface and Interface Analysis",

issn = "0142-2421",

publisher = "John Wiley \& Sons Ltd",

number = "10",

}

TY - JOUR

T1 - Grain-stored energy and the propagation of intergranular corrosion in AA2xxx aluminium alloys

AU - Zhou, X.

AU - Luo, C.

AU - Ma, Y.

AU - Hashimoto, T.

AU - Thompson, G. E.

AU - Hughes, A. E.

AU - Skeldon, P.

PY - 2013/10

Y1 - 2013/10

N2 - In the present study, intergranular corrosion (IGC) in AA2024 and AA2099 aluminium alloys was investigated. The IGC propagation path was examined using scanning and transmission electron microscopies. Further, electron backscatter diffraction was employed to investigate the relationship between the grain structure and the IGC susceptibility. It was found that IGC could occur at grain boundaries where second phase precipitates were absent. It was also revealed that IGC occurred at the grain boundaries that surround grains of relatively high-stored energy, and corrosion was not confined within the region immediately adjacent to the grain boundaries but had developed into the grains of relatively high-stored energy, suggesting that IGC propagated within the grains that have relatively high levels of defects. Copyright © 2013 John Wiley & Sons, Ltd. Copyright © 2013 John Wiley & Sons, Ltd.

AB - In the present study, intergranular corrosion (IGC) in AA2024 and AA2099 aluminium alloys was investigated. The IGC propagation path was examined using scanning and transmission electron microscopies. Further, electron backscatter diffraction was employed to investigate the relationship between the grain structure and the IGC susceptibility. It was found that IGC could occur at grain boundaries where second phase precipitates were absent. It was also revealed that IGC occurred at the grain boundaries that surround grains of relatively high-stored energy, and corrosion was not confined within the region immediately adjacent to the grain boundaries but had developed into the grains of relatively high-stored energy, suggesting that IGC propagated within the grains that have relatively high levels of defects. Copyright © 2013 John Wiley & Sons, Ltd. Copyright © 2013 John Wiley & Sons, Ltd.

KW - aluminium alloy

KW - grain-stored energy

KW - intergranular corrosion

KW - lithium

U2 - 10.1002/sia.5218

DO - 10.1002/sia.5218

M3 - Article

SN - 0142-2421

VL - 45

SP - 1543

EP - 1547

JO - Surface and Interface Analysis

JF - Surface and Interface Analysis

IS - 10

ER -

Grain-stored energy and the propagation of intergranular corrosion in AA2xxx aluminium alloys

Abstract

Keywords

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Projects

Light Alloys towards environmentally sustainable transport: 2nd generation solutions for Advanced Metallic Systems ( LATEST 2 )

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