Analyse und Adaption des Heißzugversuches zur Beschreibung des Umformverhaltens von Super-Duplexwerkstoffen

Translated title of the contribution: Analysis and adaptation of the hot tensile test for the characterization of the hot working ability of Super-Duplex steels

Hubert Herzer

Research output: ThesisDiploma Thesis

Abstract

In general, the reduction in area is applied for the characterization of the hot working ability of Duplex steels. Up to now, the determination of this parameter at Böhler Edelstahl GmbH & Co KG was carried out by hot tensile tests in an external laboratory. An adjustment of the existing unit for hot forming simulation Gleeble 3800 TM makes it possible to do in - house tests. The theoretical part of the present study describes the microstructure formation and the precipitation behavior of Duplex steels and provides a summary of essential parameters influencing the hot formability. The effect of the relation between austenite and ferrite is shown in principle by means of three Super-Duplex steels 1.4501 (X2CrNiMoCuWN25-7-4), 1.4507 (X2CrNiMoCuN25-6-3) and the modified 1.4501 (Böhler A912). Furthermore, the investigation of the microstructure evaluates the influence of non - metallic inclusions, precipitations and intermetallic phases on the hot working behavior of these materials.
Translated title of the contributionAnalysis and adaptation of the hot tensile test for the characterization of the hot working ability of Super-Duplex steels
Original languageGerman
QualificationDipl.-Ing.
Supervisors/Advisors
  • Presoly, Peter, Co-Supervisor (internal)
  • Liebfahrt, Werner, Supervisor (external), External person
  • Bernhard, Christian, Supervisor (internal)
Award date19 Dec 2008
Publication statusPublished - 2008

Bibliographical note

embargoed until null

Keywords

  • hot working ability Duplex steels hot tensile test precipitation behavior 1.4501 1.4507 Böhler A912 X2CrNiMoCuWN25-7-4 X2CrNiMoCuN25-6-3 non metallic inclusions intermetallic phases

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