Structure and composition of expanded austenite produced by nitrogen plasma immersion ion implantation of stainless steels X6CrNiTi1810 and X2CrNiMoN2253

The structure and phase composition of the modified surface of two different stainless steels (austenitic steel X6CrNiTi1810 and austenitic–ferritic steel X2CrNiMoN2253) after 3 h plasma immersion ion implantation of nitrogen at 400°C were compared using XRD, SEM, TEM and Mössbauer spectroscopy. Bot...

Full description

Saved in:
Bibliographic Details
Published inSurface & coatings technology Vol. 116-119; pp. 189 - 198
Main Authors Blawert, C., Mordike, B.L., Jirásková, Y., Schneeweiss, O.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.09.1999
Subjects
Austenitic stainless steel
Duplex stainless steel
Expanded austenite
Plasma immersion ion implantation
Structure
Austenitic stainless steel
Expanded austenite
Duplex stainless steel
Structure
Plasma immersion ion implantation
Online AccessGet full text

Cover

More Information
Summary:The structure and phase composition of the modified surface of two different stainless steels (austenitic steel X6CrNiTi1810 and austenitic–ferritic steel X2CrNiMoN2253) after 3 h plasma immersion ion implantation of nitrogen at 400°C were compared using XRD, SEM, TEM and Mössbauer spectroscopy. Both steels show a surface layer with very similar composition. The major phase found is expanded austenite. Very fine precipitates in the near surface region are most likely decomposition products (ferrite/martensite and CrN) of the metastable expanded austenite. The stability of the expanded austenite in the austenitic–ferritic steel is lower and the amount of decomposition products is higher under the same treatment conditions.
ISSN:0257-8972
1879-3347
DOI:10.1016/S0257-8972(99)00086-9