Internal friction vs. temperature spectra, together with X-ray diffraction and hardness characteristics have been examined in MANET steel samples submitted to various thermal treatments. The results indicate the existence of a critical temperature (almost-equal-to 1450 K) below which the Cr atoms are not distributed at random but they form C-Cr associates, occupying the corners of the interstices which contain C atoms. The properties of martensite obtained with different cooling rates are connected with different characteristics of these associates, which may be controlled by thermal treatments above M(s) in high-temperature prenucleation stages of the martensite.
Gondi, P., Montanari, R., Sili, A. (1994). EFFECTS OF HIGH-TEMPERATURE TREATMENTS ON MARTENSITIC-TRANSFORMATION IN MANET STEEL. ZEITSCHRIFT FÜR METALLKUNDE, 85(9), 664-669.
EFFECTS OF HIGH-TEMPERATURE TREATMENTS ON MARTENSITIC-TRANSFORMATION IN MANET STEEL
GONDI, PRIMO;MONTANARI, ROBERTO;
1994-01-01
Abstract
Internal friction vs. temperature spectra, together with X-ray diffraction and hardness characteristics have been examined in MANET steel samples submitted to various thermal treatments. The results indicate the existence of a critical temperature (almost-equal-to 1450 K) below which the Cr atoms are not distributed at random but they form C-Cr associates, occupying the corners of the interstices which contain C atoms. The properties of martensite obtained with different cooling rates are connected with different characteristics of these associates, which may be controlled by thermal treatments above M(s) in high-temperature prenucleation stages of the martensite.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
