Einfluss von Cu auf die Gefügeausbildung von Super Duplex Stählen

Translated title of the contribution: Cu influence on the formation of the microstructure of Super Duplex Stainless Steels

Matthias Gsellmann

Research output: ThesisDiploma Thesis


Super Duplex Stainless Steels are high-alloyed steels with an excellent corrosion resistance. They exhibit a ferritic/austenitic microstructure and for better corrosion resistance Cu can be added to Super Duplex Stainless Steels. Due to a lack in literature, the intention of this work was to analyse the influence of Cu on the microstructure as well as on mechanical properties. By means of optical light microscopy the ferrite/austenite phase balance was investigated by a variation of the Cu content. Scanning electron microscopy combined with electron backscatter diffraction was used to identify and analyse occurring phases as well as to establish a correlation between microstructure and fracture behaviour. Furthermore, tensile tests, hardness tests as well as notched impact tests were performed to determine mechanical properties. As a result, it was found that Cu shifts the ferrite/austenite phase balance to a higher austenite fraction and changes the notched impact behaviour.
Translated title of the contributionCu influence on the formation of the microstructure of Super Duplex Stainless Steels
Original languageGerman
  • Kapp, Marianne, Supervisor (external)
  • Leitner, Harald, Supervisor (internal)
  • Ressel, Gerald, Co-Supervisor (external)
Award date7 Apr 2017
Publication statusPublished - 2017

Bibliographical note

embargoed until 27-02-2022


  • Super Duplex Stainless Steels
  • Cu
  • fracture behaviour
  • mechanical properties

Cite this