Refractory Materials for Casting Manganese Alloyed

C.G. Aneziris1, A. Jahn2, M. Weider3, W. Schärfl4

1 Institute of Ceramic, Glass and Construction Materials
2 Institute of Iron and Steel Technology
3 Institute of Foundry Technology, TU Bergakademie Freiberg, 09596 Freiberg, Germany
4 Institute of Ceramic, Glass and Construction, Materials

Revision

Volume 2, Issue 3, Pages 81 - 86

Abstract

Austenitic steel based on the Fe-Cr-Mn-Ni system showing transformation induced plasticity (TRIP) was processed in a Bridgman furnace. During the melting of high Mn stainless steel in a vacuum induction furnace and the subsequent casting process, several corrosion problems with the refractory – the crucibles and the moulded materials occurred. Three crucible materials with varying SiO2 contents and an Al2O3-ZrSiO4 moulding material were tested. The degradation processes are discussed, combining experimental results analysed by optical microscopy, scanning electron microscopy, electrondispersive X-ray analysis and X-ray diffractometry.

Keywords

austenitic TRIP steel,manganese, SiO2, refractory, corrosion, cast steel, Bridgman process

References

Copyright

© 2010 Göller Verlag