A study is reported on carbides electrolytically extracted from two different types of high speed tool steels as quenched and after tempering. According to X-ray diffraction analysis and EDS microanalysis, Mossbauer spectra show the presence of MC and M6C in every analysed sample. Only a few substitutional Fe atoms should be present in MC and they give a minor contribution to the Mossbauer spectrum. A model for evaluating the Mossbauer spectrum of M6C is proposed which is based on the symmetry of lattice sites occupied by Fe atoms and partially substituted by other metallic atoms. The proposed model also allows to get information on the amount of this substitution.
CHARACTERIZATION OF CARBIDE PHASES IN HIGH-SPEED TOOL STEELS / F., Gauzzi; Lupi, Carla; B., Verdini; G., Principi. - In: HYPERFINE INTERACTIONS. - ISSN 0304-3843. - STAMPA. - 69:1-4(1991), pp. 541-544. (Intervento presentato al convegno INTERNATIONAL CONF ON THE APPLICATIONS OF THE MOSSBAUER EFFECT ( ICAME 91 ) tenutosi a NANJING, PEOPLES R CHINA nel SEP 16-20, 1991) [10.1007/bf02401884].
CHARACTERIZATION OF CARBIDE PHASES IN HIGH-SPEED TOOL STEELS
LUPI, Carla;
1991
Abstract
A study is reported on carbides electrolytically extracted from two different types of high speed tool steels as quenched and after tempering. According to X-ray diffraction analysis and EDS microanalysis, Mossbauer spectra show the presence of MC and M6C in every analysed sample. Only a few substitutional Fe atoms should be present in MC and they give a minor contribution to the Mossbauer spectrum. A model for evaluating the Mossbauer spectrum of M6C is proposed which is based on the symmetry of lattice sites occupied by Fe atoms and partially substituted by other metallic atoms. The proposed model also allows to get information on the amount of this substitution.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
