Study of the austempering transformation kinetics in compacted graphite cast irons

In this work, the phases involved in the transformation austenite→ferrite+high-carbon austenite in cast irons were assessed by means of Mossbauer spectroscopy and hardness measurements for samples austempered at five different temperatures between 573 and 673 K with two Mn contents. The C content in...

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Autores principales: Gregorutti, Ricardo Walter, Laneri, Karina Fabiana, Desimoni, Judith, Mercader, Roberto Carlos
Formato: Articulo
Lenguaje:Inglés
Publicado: 2004
Materias:
Física
Ciencias Exactas
austenite
Mössbauer spectroscopy
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/134797
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-134797
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
Ciencias Exactas
austenite
Mössbauer spectroscopy
spellingShingle Física
Ciencias Exactas
austenite
Mössbauer spectroscopy
Gregorutti, Ricardo Walter
Laneri, Karina Fabiana
Desimoni, Judith
Mercader, Roberto Carlos
Study of the austempering transformation kinetics in compacted graphite cast irons
topic_facet Física
Ciencias Exactas
austenite
Mössbauer spectroscopy
description In this work, the phases involved in the transformation austenite→ferrite+high-carbon austenite in cast irons were assessed by means of Mossbauer spectroscopy and hardness measurements for samples austempered at five different temperatures between 573 and 673 K with two Mn contents. The C content in the high-carbon austenite was found to have a dependence of t0.40±0.05 on the austempering time t, which evidences that diffusion of carbon has taken place. The kinetic parameter k determined using the Johnson-Mehl-Avrami equation has a maximum of 3.9×10−3 (s−1) at ≈623 K and corroborates that Mn slows the transformation rate.
format Articulo
Articulo
author Gregorutti, Ricardo Walter
Laneri, Karina Fabiana
Desimoni, Judith
Mercader, Roberto Carlos
author_facet Gregorutti, Ricardo Walter
Laneri, Karina Fabiana
Desimoni, Judith
Mercader, Roberto Carlos
author_sort Gregorutti, Ricardo Walter
title Study of the austempering transformation kinetics in compacted graphite cast irons
title_short Study of the austempering transformation kinetics in compacted graphite cast irons
title_full Study of the austempering transformation kinetics in compacted graphite cast irons
title_fullStr Study of the austempering transformation kinetics in compacted graphite cast irons
title_full_unstemmed Study of the austempering transformation kinetics in compacted graphite cast irons
title_sort study of the austempering transformation kinetics in compacted graphite cast irons
publishDate 2004
url http://sedici.unlp.edu.ar/handle/10915/134797
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AT lanerikarinafabiana studyoftheaustemperingtransformationkineticsincompactedgraphitecastirons
AT desimonijudith studyoftheaustemperingtransformationkineticsincompactedgraphitecastirons
AT mercaderrobertocarlos studyoftheaustemperingtransformationkineticsincompactedgraphitecastirons
bdutipo_str Repositorios
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