On the Intergranular Corrosion and Hardness Evolution of 6xxx Series Al Alloys as a Function of Si:Mg Ratio, Cu Content, and Aging Condition

S. K. Kairy; P. A. Rometsch; C. H.J. Davies; N. Birbilis

doi:10.5006/2506

On the Intergranular Corrosion and Hardness Evolution of 6xxx Series Al Alloys as a Function of Si:Mg Ratio, Cu Content, and Aging Condition

S. K. Kairy^*, P. A. Rometsch, C. H.J. Davies, N. Birbilis

^*Corresponding author for this work

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

54 Citations (Scopus)

Abstract

The intergranular corrosion (IGC) and hardness associated with 6xxx series aluminum alloy sheets, varying in composition (namely Si:Mg ratio and Cu content), were systematically studied in four different aging conditions. The IGC of each alloy was studied using ASTM G110, scanning electron microscopy, and optical microscopy. Scanning transmission electron microscopy was also used to rationalize the grain boundary chemistry of the relevant alloys. It was revealed that the severity of IGC depends on the continuity and type of grain boundary phases. The property space reported herein reveals prospects for the optimization of 6xxx series alloy compositions.

Original language	English
Pages (from-to)	1280-1295
Number of pages	16
Journal	Corrosion
Volume	73
Issue number	10
DOIs	https://doi.org/10.5006/2506
Publication status	Published - Oct 2017
Externally published	Yes

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title = "On the Intergranular Corrosion and Hardness Evolution of 6xxx Series Al Alloys as a Function of Si:Mg Ratio, Cu Content, and Aging Condition",

abstract = "The intergranular corrosion (IGC) and hardness associated with 6xxx series aluminum alloy sheets, varying in composition (namely Si:Mg ratio and Cu content), were systematically studied in four different aging conditions. The IGC of each alloy was studied using ASTM G110, scanning electron microscopy, and optical microscopy. Scanning transmission electron microscopy was also used to rationalize the grain boundary chemistry of the relevant alloys. It was revealed that the severity of IGC depends on the continuity and type of grain boundary phases. The property space reported herein reveals prospects for the optimization of 6xxx series alloy compositions.",

keywords = "Aluminum alloy, Intergranular corrosion, Pitting, Precipitation age hardening, Scanning transmission electron microscopy",

author = "Kairy, {S. K.} and Rometsch, {P. A.} and Davies, {C. H.J.} and N. Birbilis",

note = "Publisher Copyright: {\textcopyright} 2017, NACE International",

year = "2017",

month = oct,

doi = "10.5006/2506",

language = "English",

volume = "73",

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AU - Kairy, S. K.

AU - Rometsch, P. A.

AU - Davies, C. H.J.

AU - Birbilis, N.

PY - 2017/10

Y1 - 2017/10

N2 - The intergranular corrosion (IGC) and hardness associated with 6xxx series aluminum alloy sheets, varying in composition (namely Si:Mg ratio and Cu content), were systematically studied in four different aging conditions. The IGC of each alloy was studied using ASTM G110, scanning electron microscopy, and optical microscopy. Scanning transmission electron microscopy was also used to rationalize the grain boundary chemistry of the relevant alloys. It was revealed that the severity of IGC depends on the continuity and type of grain boundary phases. The property space reported herein reveals prospects for the optimization of 6xxx series alloy compositions.

AB - The intergranular corrosion (IGC) and hardness associated with 6xxx series aluminum alloy sheets, varying in composition (namely Si:Mg ratio and Cu content), were systematically studied in four different aging conditions. The IGC of each alloy was studied using ASTM G110, scanning electron microscopy, and optical microscopy. Scanning transmission electron microscopy was also used to rationalize the grain boundary chemistry of the relevant alloys. It was revealed that the severity of IGC depends on the continuity and type of grain boundary phases. The property space reported herein reveals prospects for the optimization of 6xxx series alloy compositions.

KW - Aluminum alloy

KW - Intergranular corrosion

KW - Pitting

KW - Precipitation age hardening

KW - Scanning transmission electron microscopy

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JO - Corrosion

JF - Corrosion

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ER -

On the Intergranular Corrosion and Hardness Evolution of 6xxx Series Al Alloys as a Function of Si:Mg Ratio, Cu Content, and Aging Condition

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