Please use this identifier to cite or link to this item: http://dx.doi.org/10.25673/60230
Title: Hot cracking tendency of flux-cored arc welding with flux-cored wires of types Ni 6625
Author(s): Burger, Stefan
Zinke, Manuela
Jüttner, Sven
Issue Date: 2021
Type: Article
Language: English
URN: urn:nbn:de:gbv:ma9:1-1981185920-621818
Subjects: Hot crack
Nickel alloys
Flux-cored wires
Weldability tests
Abstract: Due to their mechanical and corrosive properties, nickel-based alloys are very important in several industrial sectors like power stations, chemical apparatus, and the oil industry. While flux-cored arc welding (FCAW) of carbon steels often uses flux-cored wires (FCW), the use of Ni-based flux-cored wires is industrially less common. The reasons for this include the lower degree of recognition and the higher material costs compared to solid wires. In comparison to solid wires, flux-cored wires have some technological benefits such as the possibility of welding without pulsed arc technology using low-cost standard mixed gases, which has a much lower tendency to weld defects due to high penetration depth. Depending on the slag, the flux-coredwires have a good weldability and excellent mechanical properties. Based on the self-stressed and externally stressed hot crack tests, the basic FCW showed a higher hot cracking susceptibility, contrary to the original assumption. Even if the causes have not yet been finally clarified, a negative influence of the comparatively high sulfur and oxygen contents in the basic FCW is suspected. The weld metal of the solid wires showed the highest hot crack resistance.
URI: https://opendata.uni-halle.de//handle/1981185920/62181
http://dx.doi.org/10.25673/60230
Open Access: Open access publication
License: (CC BY 4.0) Creative Commons Attribution 4.0(CC BY 4.0) Creative Commons Attribution 4.0
Sponsor/Funder: Projekt DEAL 2020
Journal Title: Welding in the world
Publisher: Springer
Publisher Place: Berlin
Volume: 65
Original Publication: 10.1007/s40194-020-01035-6
Page Start: 381
Page End: 392
Appears in Collections:Fakultät für Maschinenbau (OA)

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