Accès gratuit
Numéro |
J. Phys. IV France
Volume 07, Numéro C5, November 1997
IVth European Symposium on Martensitic Transformations
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Page(s) | C5-263 - C5-268 | |
DOI | https://doi.org/10.1051/jp4:1997541 |
IVth European Symposium on Martensitic Transformations
J. Phys. IV France 07 (1997) C5-263-C5-268
DOI: 10.1051/jp4:1997541
1 Ruhr-Universität Bochum, Institute for Materials, Universitätsstr. 150, 44780 Bochum, Germany
2 Institute of Meta1 Physics, 35 acad. Vernadsky Blvd, 252142 Kiev, Ukraine
© EDP Sciences 1997
J. Phys. IV France 07 (1997) C5-263-C5-268
DOI: 10.1051/jp4:1997541
Tempering of Martensitic Stainless Steel with 0.6 w/o Nitogen and /or Carbon
H. Berns1 and V. Gavriljuk21 Ruhr-Universität Bochum, Institute for Materials, Universitätsstr. 150, 44780 Bochum, Germany
2 Institute of Meta1 Physics, 35 acad. Vernadsky Blvd, 252142 Kiev, Ukraine
Abstract
Martensitic stainless high nitrogen steels are used for advanced bearings because of their superior
corrosion resistance and hot hardness. Therefore the tempering behaviour of steels SC, SN and SNC with close
to 15 w/o Cr, 1 w/o Mo and 0.6 w/o C, N or C+N, respectively, was investigated. Secondary hardening is
enhanced by nitrogen, which also increase the content of retained austenite and its resistance to tempering
especially in SNC. During tempering [MATH], [MATH] and M7C3-carbides precipitate in SC while [MATH], [MATH] and M2N-nitrides
appear in SN. In SNC carbides and nitrides precipitate separately. Mössbauer spedroskopy revealed clustering
of solute atoms in SC and ordering in SN and more so in SNC.
© EDP Sciences 1997