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Titolo:
STABILITY FIELD OF AUSTENITE AND MARTENSITIC-TRANSFORMATION IN THE SYSTEM FE-CR-MN-N
Autore:
KUNZE J; BEYER B;
Indirizzi:
INST FESTKORPERPHYS & WERKSTOFFORSCH DRESDEN,HELMHOLTZSTR 20 D-01069 DRESDEN GERMANY
Titolo Testata:
Zeitschrift fur Metallkunde
fascicolo: 9, volume: 88, anno: 1997,
pagine: 722 - 727
SICI:
0044-3093(1997)88:9<722:SFOAAM>2.0.ZU;2-Q
Fonte:
ISI
Lingua:
ENG
Soggetto:
REGULAR SOLUTION MODEL; THERMODYNAMIC EVALUATION; DELTA-FERRITE; NUCLEATION; FCC->BCC; ALLOYS; PHASES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
15
Recensione:
Indirizzi per estratti:
Citazione:
J. Kunze e B. Beyer, "STABILITY FIELD OF AUSTENITE AND MARTENSITIC-TRANSFORMATION IN THE SYSTEM FE-CR-MN-N", Zeitschrift fur Metallkunde, 88(9), 1997, pp. 722-727

Abstract

The phase equilibria between ferrite and austenite as well as betweenaustenite and the hexagonal epsilon nitride ''Cr2N'' were calculated for different compositions of Fe-Cr-Mn-N alloys. Corresponding phase diagrams show, that single-phase austenite can be obtained by heat treatment only above about 1200 and below about 1600 K. The difference Delta G(m) of the Gibbs energies of ferrite and austenite causes martensitic transformation, when the critical driving force Delta G(Ms) is surpassed. Applying recently published thermodynamic data the corresponding martensite start temperatures of alloys containing different mass contents of chromium and manganese were estimated. They were drawn into[%N]-T-phase diagrams, From the diagrams the conditions can be red where martensite can be formed by quenching single-phase austenite.

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Documento generato il 05/12/20 alle ore 19:06:33