Kinetics and control of scaling for reduced surface decarburization of spring steels

Dorel Anghelina, Robert Kienreich, Sabine Zamberger, Jörg Zamberger, Ernst Kozeschnik, Reinhold Schneider

Research output: Contribution to journalArticlepeer-review

Abstract

Scale formation control is important in order to optimize the steel surface quality in a balance between metal yield losses and low decarburization depth. In this study, the case of billets reheating in CH4 - based off-gas is considered, namely including a model for the oxygen partial pressure. The results from thermo-gravimetric experiments and metallographic studies are discussed, showing how the atmosphere, steel composition and the reheating pattern influence the amount, structure and composition of the oxide layer. Some possible ways of oxidation protection are also investigated.

Original languageEnglish
Pages (from-to)5-9
Number of pages5
JournalMetalurgia International
Volume15
Issue number5
Publication statusPublished - May 2010

Keywords

  • Gas composition
  • Oxygen partial pressure
  • Scale layer thickness
  • Scale phase change
  • Surface decarburization

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