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Intergranular corrosion on Nd:YAG laser‐welded A653 steel for automotive application
Author(s) -
Looi Y. M.,
Flores J. R.,
Kwakernaak C.,
de Wit J. H. W.
Publication year - 2004
Publication title -
materials and corrosion
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.487
H-Index - 55
eISSN - 1521-4176
pISSN - 0947-5117
DOI - 10.1002/maco.200403793
Subject(s) - welding , materials science , metallurgy , intergranular corrosion , laser beam welding , heat affected zone , corrosion , galvanization , aluminium , electric resistance welding , microstructure , composite material , layer (electronics)
Laser welding techniques produce a narrower heat‐affected zone than other conventional welding methods. However, laser welding is not exempt from high heat input during the welding process. This high heat input results in changes of the material properties including its corrosion behaviour; the formation of the heat affected zone increases the susceptibility of the material to intergranular attack. The residue of zinc at the weld due to condensation and splashing during the welding process may also influence adversely the corrosion behaviour of the material. The degree of susceptibility to corrosion strongly depends on the welding parameters. Electrochemical and microstructure characterisation were employed to study the influence of Nd:YAG (neodymium yttrium aluminium garnet) laser‐welding on an A653 galvanized steel at different welding parameters.