Internal friction, dynamic modulus (Md), microhardness measurements and X-ray diffraction analyses have been used to study the characteristics of C-Cr associates in 11% Cr martensitic steel MANET. On the basis of a preferential bond between C and Cr atoms, we discuss a statistical model which may explain the formation and stability of C-Cr associates for T< Tc and their dissolution for T> Tc. The model is illustrated by snapshots obtained by Monte Carlo simulations. Q-1 results show that the temperature T¢, critical for associate stability, is about 1450 K. The characteristics of C-Cr associates in as-quenched material depend on cooling rate: with slower rates it was found that diffusive motions of solute atoms take place for T> 1270 K playing a fundamental role on martensitic transformation.

Gondi, P., Montanari, R. (1994). Q-1 spectra connected with C under solute atom interaction. JOURNAL OF ALLOYS AND COMPOUNDS, 211-212, 33.

Q-1 spectra connected with C under solute atom interaction

GONDI, PRIMO;MONTANARI, ROBERTO
1994

Abstract

Internal friction, dynamic modulus (Md), microhardness measurements and X-ray diffraction analyses have been used to study the characteristics of C-Cr associates in 11% Cr martensitic steel MANET. On the basis of a preferential bond between C and Cr atoms, we discuss a statistical model which may explain the formation and stability of C-Cr associates for T< Tc and their dissolution for T> Tc. The model is illustrated by snapshots obtained by Monte Carlo simulations. Q-1 results show that the temperature T¢, critical for associate stability, is about 1450 K. The characteristics of C-Cr associates in as-quenched material depend on cooling rate: with slower rates it was found that diffusive motions of solute atoms take place for T> 1270 K playing a fundamental role on martensitic transformation.
Pubblicato
Rilevanza internazionale
Articolo
Sì, ma tipo non specificato
Settore ING-IND/21 - Metallurgia
English
Gondi, P., Montanari, R. (1994). Q-1 spectra connected with C under solute atom interaction. JOURNAL OF ALLOYS AND COMPOUNDS, 211-212, 33.
Gondi, P; Montanari, R
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/50368
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