Coarsening investigations of precipitates in PM tool steel grades - an effect of nitrogen
2012 (English)In: Berg- und Huttenmännische Monatshefte (BHM), ISSN 0005-8912, Vol. 157, no 11, 406-413 p.Article in journal (Refereed) Published
We present experimental and theoretical comparisons of the coarsening rate for the MX(X=C, N or C+N) precipitate in five different tool steel grades produced by PowderMetallurgy (PM). The alloys contain different amounts of nitrogen and carbon; ranging fromhigh carbon/low nitrogen to high nitrogen/low carbon. Common for the grades is a highamount of precipitate forming alloying elements resulting in a high fraction of hard phase.Experimentally we have found out that the nitrogen rich precipitates coarsen slower, both forhigher and lower carbon content, than the carbon rich precipitates. Coarsening simulations areperformed utilizing the DICTRA software and an agreement between calculations andmeasurements can be concluded.
Place, publisher, year, edition, pages
2012. Vol. 157, no 11, 406-413 p.
coarsening, PM tool steels, carbides, nitrides, DICTRA
Metallurgy and Metallic Materials
IdentifiersURN: urn:nbn:se:kth:diva-103320DOI: 10.1007/s00501-012-0039-2OAI: oai:DiVA.org:kth-103320DiVA: diva2:559707
QC 20121010. Updated from accepted to published 20131202.2012-10-102012-10-102013-12-02Bibliographically approved