Corrosion of friction stir welds in aerospace alloys

Alison J. Davenport; Rajan Ambat; Manthana Jariyaboon; Brian J. Connolly; Stewart W. Williams; Debbie A. Price; Andy Wescott; Peter C. Morgan

Corrosion of friction stir welds in aerospace alloys

Alison J. Davenport
, Rajan Ambat
, Manthana Jariyaboon
, Brian J. Connolly
, Stewart W. Williams
, Debbie A. Price
, Andy Wescott
, Peter C. Morgan

University of Birmingham
ATC Sowerby

Research output: Contribution to conference › Paper › peer-review

7 Citations (Scopus)

Abstract

The corrosion susceptibility of friction stir welds (FSW) in the aerospace alloy 2024 was examined with gel visualization, intergranular corrosion testing, and local microelectrochemical measurements. Both the nugget zone and heat-affected zone (HAZ) showed enhanced anodic reactivity associated with intergranular attack. The nugget zone also showed greater cathodic reactivity as a result of increased precipitation of intermetallic particles. The location of corrosion attack was found to vary with weld processing parameters. For a low toolpiece rotation rate, attack is predominantly in the nugget zone, whereas for higher toolpiece rotation rates, attack is predominantly in the HAZ. Corrosion susceptibility of FSWs is substantially improved by laser treatment with an excimer laser, which forms a highly homogeneous layer with low anodic and cathodic reactivity.

Original language	English
Pages	403-412
Number of pages	10
Publication status	Published - 2003
Externally published	Yes
Event	Corrosion and Protection of Light Metal Alloys - Proceedings of the International Symposium - Orlando, FL., United States Duration: 12 Oct 2003 → 17 Oct 2003

Conference

Conference	Corrosion and Protection of Light Metal Alloys - Proceedings of the International Symposium
Country/Territory	United States
City	Orlando, FL.
Period	12/10/03 → 17/10/03

Cite this

@conference{1e4e2481ceba4ce190d8b7393ec88a33,

title = "Corrosion of friction stir welds in aerospace alloys",

abstract = "The corrosion susceptibility of friction stir welds (FSW) in the aerospace alloy 2024 was examined with gel visualization, intergranular corrosion testing, and local microelectrochemical measurements. Both the nugget zone and heat-affected zone (HAZ) showed enhanced anodic reactivity associated with intergranular attack. The nugget zone also showed greater cathodic reactivity as a result of increased precipitation of intermetallic particles. The location of corrosion attack was found to vary with weld processing parameters. For a low toolpiece rotation rate, attack is predominantly in the nugget zone, whereas for higher toolpiece rotation rates, attack is predominantly in the HAZ. Corrosion susceptibility of FSWs is substantially improved by laser treatment with an excimer laser, which forms a highly homogeneous layer with low anodic and cathodic reactivity.",

author = "Davenport, \{Alison J.\} and Rajan Ambat and Manthana Jariyaboon and Connolly, \{Brian J.\} and Williams, \{Stewart W.\} and Price, \{Debbie A.\} and Andy Wescott and Morgan, \{Peter C.\}",

year = "2003",

language = "English",

pages = "403--412",

note = "Corrosion and Protection of Light Metal Alloys - Proceedings of the International Symposium ; Conference date: 12-10-2003 Through 17-10-2003",

}

TY - CONF

T1 - Corrosion of friction stir welds in aerospace alloys

AU - Davenport, Alison J.

AU - Ambat, Rajan

AU - Jariyaboon, Manthana

AU - Connolly, Brian J.

AU - Williams, Stewart W.

AU - Price, Debbie A.

AU - Wescott, Andy

AU - Morgan, Peter C.

PY - 2003

Y1 - 2003

N2 - The corrosion susceptibility of friction stir welds (FSW) in the aerospace alloy 2024 was examined with gel visualization, intergranular corrosion testing, and local microelectrochemical measurements. Both the nugget zone and heat-affected zone (HAZ) showed enhanced anodic reactivity associated with intergranular attack. The nugget zone also showed greater cathodic reactivity as a result of increased precipitation of intermetallic particles. The location of corrosion attack was found to vary with weld processing parameters. For a low toolpiece rotation rate, attack is predominantly in the nugget zone, whereas for higher toolpiece rotation rates, attack is predominantly in the HAZ. Corrosion susceptibility of FSWs is substantially improved by laser treatment with an excimer laser, which forms a highly homogeneous layer with low anodic and cathodic reactivity.

AB - The corrosion susceptibility of friction stir welds (FSW) in the aerospace alloy 2024 was examined with gel visualization, intergranular corrosion testing, and local microelectrochemical measurements. Both the nugget zone and heat-affected zone (HAZ) showed enhanced anodic reactivity associated with intergranular attack. The nugget zone also showed greater cathodic reactivity as a result of increased precipitation of intermetallic particles. The location of corrosion attack was found to vary with weld processing parameters. For a low toolpiece rotation rate, attack is predominantly in the nugget zone, whereas for higher toolpiece rotation rates, attack is predominantly in the HAZ. Corrosion susceptibility of FSWs is substantially improved by laser treatment with an excimer laser, which forms a highly homogeneous layer with low anodic and cathodic reactivity.

UR - https://www.scopus.com/pages/publications/3042836952

M3 - Paper

AN - SCOPUS:3042836952

SP - 403

EP - 412

T2 - Corrosion and Protection of Light Metal Alloys - Proceedings of the International Symposium

Y2 - 12 October 2003 through 17 October 2003

ER -

Corrosion of friction stir welds in aerospace alloys

Abstract

Conference

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