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Titolo:
AN IN-SITU SYNCHROTRON STUDY OF NANOCRYSTALLIZATION IN (FE, CR)-SI-B(-CU-NB) ALLOYS
Autore:
CONDE CF; MILLAN M; BORREGO JM; CONDE A; CAPITAN MJ; JOULAUD JL;
Indirizzi:
UNIV SEVILLA,DEPT FIS MAT CONDENSADA,APARTADO 1065 E-41080 SEVILLE SPAIN EUROPEAN SYNCHROTRON RADIAT FACIL F-38043 GRENOBLE FRANCE
Titolo Testata:
Philosophical magazine letters
fascicolo: 3, volume: 78, anno: 1998,
pagine: 221 - 227
SICI:
0950-0839(1998)78:3<221:AISSON>2.0.ZU;2-6
Fonte:
ISI
Lingua:
ENG
Soggetto:
GRAIN-STRUCTURE; CRYSTALLIZATION; FE73.5CU1NB3SI13.5B9; TRANSFORMATION; EVOLUTION; KINETICS; FE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
21
Recensione:
Indirizzi per estratti:
Citazione:
C.F. Conde et al., "AN IN-SITU SYNCHROTRON STUDY OF NANOCRYSTALLIZATION IN (FE, CR)-SI-B(-CU-NB) ALLOYS", Philosophical magazine letters, 78(3), 1998, pp. 221-227

Abstract

The nanocrystallization process in (Fe73.5-xCrx)Si13.5B9Cu1Nb3 (x = 0, 3 and 5) amorphous alloys has been studied by in-situ X-ray diffraction, using a synchrotron radiation source. The nanocrystalline volume fraction and the mean grain size of the (Fe,Si) crystallites were estimated from an intensity profile analysis of the main diffraction maximum. Cr alloying lowers the crystalline fraction for the same annealingconditions. The mean size of the crystallites initially increases with increasing annealing time but the growth rate slows down and a saturation value of about 12 nm is reached. The Si content of the (Fe, Si) phase initially correlates with the concentration in the as-cast glassy alloy but a final value of about 21 at.% Si is reached. The transformation kinetics are described by an Avrami exponent below unity, as usually found for Finemet alloys.

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Documento generato il 26/11/20 alle ore 14:09:01