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Slag characterisation of 308L-type stainless steel rutile flux-cored wires

Authors
  • Holly, Sylvia1
  • Mayer, Peter2
  • Bernhard, Christian2
  • Posch, Gerhard3
  • 1 voestalpine Böhler Welding Austria GmbH, Böhler Welding Str. 1, Kapfenberg, A-8605, Austria , Kapfenberg (Austria)
  • 2 Montanuniversitaet Leoben, Department of Ferrous Metallurgy, Leoben, A-8700, Austria , Leoben (Austria)
  • 3 Fronius International GmbH, Froniusplatz 1, Wels, A-4600, Austria , Wels (Austria)
Type
Published Article
Journal
Welding in the World
Publisher
Springer Berlin Heidelberg
Publication Date
Nov 29, 2018
Volume
63
Issue
2
Pages
293–311
Identifiers
DOI: 10.1007/s40194-018-0675-6
Source
Springer Nature
Keywords
License
Yellow

Abstract

The behaviour of the weld characteristic of flux-cored wires is strongly influenced by the flux. The weld metal and weldability are determined by the flux composition and to a much smaller level by shielding gas used as well. The wide variety of components combined with the complexity of the welding process result in intricate mechanisms occurring in the slag. The slags of the different rutile flux-cored wires, designed for either position or standard downhand welding, were analysed in order to gain knowledge about the complex slag mechanisms and to carry out a metallurgical characterisation. Chemical analysis, differential thermal analysis and microstructural investigations of the slags were conducted to identify and characterise the formed phases. In addition, the viscosities of the slags were measured and correlated with the DTA results.

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