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Journal of Materials Engineering and Performance
Erschienen in: Journal of Materials Engineering and Performance 1/2019

18.12.2018

Microstructure and Corrosion Properties of Laser-Welded SAF 2507 Super Duplex Stainless Steel Joints

verfasst von: Kai Qi, Ruifeng Li, Guangjin Wang, Gangzhi Li, Bin Liu, Mingfang Wu

Erschienen in: Journal of Materials Engineering and Performance | Ausgabe 1/2019

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Abstract

SAF 2507 super duplex stainless steel has been welded using laser beam (LB) welding and laser/gas metal arc hybrid (LGH) welding processes. The pitting and intergranular corrosion properties of the welding joints have been tested using electrochemical testing and microstructure observations. The volume fraction of the ferrite phase reaches 70% in the weld zone of the LB welding joint, while the volume fraction of the ferrite phase is 60% for the welding joint of LGH due to the introduction of Ni from welding wire. The pitting corrosion resistance of the welding joint for LB is better than that of LGH. The pitting corrosion is easily conceived in the heat-affected zone (HAZ) because of the formation of Cr2N in the HAZ during welding.
Vorheriger Artikel Solidification Characteristics of Silicon-Alloyed Ductile Cast Irons
Nächster Artikel Development of a Novel Cr21 Lean Duplex Stainless Steel and Its Hot Deformation Behavior

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Metadaten
Titel
Microstructure and Corrosion Properties of Laser-Welded SAF 2507 Super Duplex Stainless Steel Joints
verfasst von
Kai Qi
Ruifeng Li
Guangjin Wang
Gangzhi Li
Bin Liu
Mingfang Wu
Publikationsdatum
18.12.2018
Verlag
Springer US
Erschienen in
Journal of Materials Engineering and Performance / Ausgabe 1/2019
Print ISSN: 1059-9495
Elektronische ISSN: 1544-1024
DOI
https://doi.org/10.1007/s11665-018-3833-5

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