Microscopic characterization of different shrinkage defects in ductile irons and their relation with composition and inoculation processs.

Shrinkage becomes one of the most important defects that negatively affects the production of ductile cast iron parts. Regular inspections made on the affected parts show that different morphologies of shrinkage can be obtained according to the melt composition, to the layout and to a number of othe...

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Detalles Bibliográficos
Autores: Regordosa Romagosa, Anna, Llorca i Isern, Núria
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2017
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/194350
Acceso en línea:https://hdl.handle.net/2445/194350
Access Level:acceso abierto
Palabra clave:Microscòpia electrònica d'escombratge
Ferro
Scanning electron microscopy
Iron
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spelling Microscopic characterization of different shrinkage defects in ductile irons and their relation with composition and inoculation processs.Regordosa Romagosa, AnnaLlorca i Isern, NúriaMicroscòpia electrònica d'escombratgeFerroScanning electron microscopyIronShrinkage becomes one of the most important defects that negatively affects the production of ductile cast iron parts. Regular inspections made on the affected parts show that different morphologies of shrinkage can be obtained according to the melt composition, to the layout and to a number of other processing variables that have been reported in the literature. However, minimization of these defects demands a more detailed understanding of their internal features and the relationship with the processing variables causing the greatest effect. In the present study, carbon equivalent content, inoculation and thermal characterization of melts have been studied as variables for producing eight test parts which have been designed for promoting the formation of shrinkage. The different defects obtained in each case have been analyzed by means of metallographic techniques and FE-SEM and their characteristics and size correlated with the selected variables. It has been found that carbon equivalent shows the strongest effect on shrinkage incidence. A discussion about the features found in the internal surfaces of the different closed defects is done, and possible explanations for each case are also described.Springer Nature2017info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttps://hdl.handle.net/2445/194350Articles publicats en revistes (Ciència dels Materials i Química Física)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésVersió postprint del document publicat a: https://doi.org/10.1007/s40962-016-0120-9International Journal of Metalcasting, 2017, vol. 11, num. 4, p. 778-789https://doi.org/10.1007/s40962-016-0120-9(c) American Foundry Society, 2017info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/1943502026-05-27T06:46:51Z
dc.title.none.fl_str_mv Microscopic characterization of different shrinkage defects in ductile irons and their relation with composition and inoculation processs.
title Microscopic characterization of different shrinkage defects in ductile irons and their relation with composition and inoculation processs.
spellingShingle Microscopic characterization of different shrinkage defects in ductile irons and their relation with composition and inoculation processs.
Regordosa Romagosa, Anna
Microscòpia electrònica d'escombratge
Ferro
Scanning electron microscopy
Iron
title_short Microscopic characterization of different shrinkage defects in ductile irons and their relation with composition and inoculation processs.
title_full Microscopic characterization of different shrinkage defects in ductile irons and their relation with composition and inoculation processs.
title_fullStr Microscopic characterization of different shrinkage defects in ductile irons and their relation with composition and inoculation processs.
title_full_unstemmed Microscopic characterization of different shrinkage defects in ductile irons and their relation with composition and inoculation processs.
title_sort Microscopic characterization of different shrinkage defects in ductile irons and their relation with composition and inoculation processs.
dc.creator.none.fl_str_mv Regordosa Romagosa, Anna
Llorca i Isern, Núria
author Regordosa Romagosa, Anna
author_facet Regordosa Romagosa, Anna
Llorca i Isern, Núria
author_role author
author2 Llorca i Isern, Núria
author2_role author
dc.subject.none.fl_str_mv Microscòpia electrònica d'escombratge
Ferro
Scanning electron microscopy
Iron
topic Microscòpia electrònica d'escombratge
Ferro
Scanning electron microscopy
Iron
description Shrinkage becomes one of the most important defects that negatively affects the production of ductile cast iron parts. Regular inspections made on the affected parts show that different morphologies of shrinkage can be obtained according to the melt composition, to the layout and to a number of other processing variables that have been reported in the literature. However, minimization of these defects demands a more detailed understanding of their internal features and the relationship with the processing variables causing the greatest effect. In the present study, carbon equivalent content, inoculation and thermal characterization of melts have been studied as variables for producing eight test parts which have been designed for promoting the formation of shrinkage. The different defects obtained in each case have been analyzed by means of metallographic techniques and FE-SEM and their characteristics and size correlated with the selected variables. It has been found that carbon equivalent shows the strongest effect on shrinkage incidence. A discussion about the features found in the internal surfaces of the different closed defects is done, and possible explanations for each case are also described.
publishDate 2017
dc.date.none.fl_str_mv 2017
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/194350
url https://hdl.handle.net/2445/194350
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Versió postprint del document publicat a: https://doi.org/10.1007/s40962-016-0120-9
International Journal of Metalcasting, 2017, vol. 11, num. 4, p. 778-789
https://doi.org/10.1007/s40962-016-0120-9
dc.rights.none.fl_str_mv (c) American Foundry Society, 2017
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) American Foundry Society, 2017
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Springer Nature
publisher.none.fl_str_mv Springer Nature
dc.source.none.fl_str_mv Articles publicats en revistes (Ciència dels Materials i Química Física)
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,301603

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