Friction stir welding of 6mm thick carbon steel underwater and in air

P. Baillie; S. W. Campbell; A. M. Galloway; S. R. Cater; N. A. McPherson

doi:10.1179/1362171815Y.0000000042

Friction stir welding of 6mm thick carbon steel underwater and in air

P. Baillie, S. W. Campbell, A. M. Galloway, S. R. Cater, N. A. McPherson

Mechanical And Aerospace Engineering

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24 Citations (Scopus)

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Abstract

This study compared the mechanical and microstructural properties produced during friction stir welding (FSW) of S275 structural steel in air and underwater. Post weld tests assessed the tensile strength, micro-hardness, distortion, Charpy impact toughness and fatigue performance in each case. The study showed that there was no significant difference in the strength, hardness or fatigue life of the air and underwater specimens. However, Charpy impact toughness was shown to decrease for the underwater specimens and was attributed to the presence of a slightly less angular grain structure than the samples welded in air. Reduced angular and longitudinal distortion was observed in the underwater welded plate compared to the plate welded in air.

Original language	English
Pages (from-to)	585-593
Number of pages	9
Journal	Science and Technology of Welding and Joining
Volume	20
Issue number	7
DOIs	https://doi.org/10.1179/1362171815Y.0000000042
Publication status	Published - 28 Jul 2015

Keywords

Charpy impact toughness
distortion
fatigue
friction stir welding (FSW)
micro-hardness
underwater

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10.1179/1362171815Y.0000000042

Baillie-etal-FSW-2015-Friction-stir-welding-of-6mm-thick-carbon-steel-underwater-and-in-airAccepted author manuscript, 1.82 MB

Cite this

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abstract = "This study compared the mechanical and microstructural properties produced during friction stir welding (FSW) of S275 structural steel in air and underwater. Post weld tests assessed the tensile strength, micro-hardness, distortion, Charpy impact toughness and fatigue performance in each case. The study showed that there was no significant difference in the strength, hardness or fatigue life of the air and underwater specimens. However, Charpy impact toughness was shown to decrease for the underwater specimens and was attributed to the presence of a slightly less angular grain structure than the samples welded in air. Reduced angular and longitudinal distortion was observed in the underwater welded plate compared to the plate welded in air.",

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AU - Baillie, P.

AU - Campbell, S. W.

AU - Galloway, A. M.

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AU - McPherson, N. A.

PY - 2015/7/28

Y1 - 2015/7/28

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AB - This study compared the mechanical and microstructural properties produced during friction stir welding (FSW) of S275 structural steel in air and underwater. Post weld tests assessed the tensile strength, micro-hardness, distortion, Charpy impact toughness and fatigue performance in each case. The study showed that there was no significant difference in the strength, hardness or fatigue life of the air and underwater specimens. However, Charpy impact toughness was shown to decrease for the underwater specimens and was attributed to the presence of a slightly less angular grain structure than the samples welded in air. Reduced angular and longitudinal distortion was observed in the underwater welded plate compared to the plate welded in air.

KW - Charpy impact toughness

KW - distortion

KW - fatigue

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Friction stir welding of 6mm thick carbon steel underwater and in air

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