The Occurrence and the Effect of Casting Skin in Compacted Graphite Iron

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Most iron castings retain their as-cast surfaces because of their geometric complexity and to minimize the machining costs. However, the mechanical properties that are documented in standards (i.e. ASTM) are tested on fully machined test bars. Therefore, the effect of the as-cast surface and sub-sur...

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Detalles Bibliográficos
Autores principales:	Boonmee, S., Stefanescu, D.M.
Formato:	Other
Lenguaje:	Inglés
Publicado:	INTEMA - UNMdP-CONICET 2014
Materias:	Compacted graphite iron Ductile Iron Casting Skin Formation Mechanism Casting Surface
Acceso en línea:	http://rinfi.fi.mdp.edu.ar/handle/123456789/16
Aporte de:	RINFI - Facultad de Ingeniería (UNMdP) de Universidad Nacional de Mar del Plata (UNMdP)

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spelling	I29-R182-123456789-162024-07-04T15:48:03Z The Occurrence and the Effect of Casting Skin in Compacted Graphite Iron Boonmee, S. Stefanescu, D.M. Compacted graphite iron Ductile Iron Casting Skin Formation Mechanism Casting Surface Most iron castings retain their as-cast surfaces because of their geometric complexity and to minimize the machining costs. However, the mechanical properties that are documented in standards (i.e. ASTM) are tested on fully machined test bars. Therefore, the effect of the as-cast surface and sub-surface features (commonly referred as “casting skin”) on mechanical properties should be evaluated. Preliminary works have shown the negative effect of the casting skin on mechanical properties of grey and ductile irons. This paper reviews the recent works on the casting skin effect on tensile and fatigue properties in compacted graphite and ductile irons. It was found that the tensile and fatigue strength were reduced by 9% and 40% respectively because of the presence of the casting skin. In addition, the correlations between processing parameters (e.g. nodularity and section thickness) and the casting skin features were presented. The experimental results suggest that the Mg depletion because of metal-mould and metal-air interactions was the main reason for the formation of the casting skin. 2014-11-13 Other 10 Th International Symposium on the Science and Processing of Cast Iron. 2014. Argentina: Mar del Plata 10 to 13th of November. 978-987-45833-0-7 http://rinfi.fi.mdp.edu.ar/handle/123456789/16 en INTEMA - UNMdP-CONICET
institution	Universidad Nacional de Mar del Plata (UNMdP)
institution_str	I-29
repository_str	R-182
collection	RINFI - Facultad de Ingeniería (UNMdP)
language	Inglés
topic	Compacted graphite iron Ductile Iron Casting Skin Formation Mechanism Casting Surface
spellingShingle	Compacted graphite iron Ductile Iron Casting Skin Formation Mechanism Casting Surface Boonmee, S. Stefanescu, D.M. The Occurrence and the Effect of Casting Skin in Compacted Graphite Iron
topic_facet	Compacted graphite iron Ductile Iron Casting Skin Formation Mechanism Casting Surface
description	Most iron castings retain their as-cast surfaces because of their geometric complexity and to minimize the machining costs. However, the mechanical properties that are documented in standards (i.e. ASTM) are tested on fully machined test bars. Therefore, the effect of the as-cast surface and sub-surface features (commonly referred as “casting skin”) on mechanical properties should be evaluated. Preliminary works have shown the negative effect of the casting skin on mechanical properties of grey and ductile irons. This paper reviews the recent works on the casting skin effect on tensile and fatigue properties in compacted graphite and ductile irons. It was found that the tensile and fatigue strength were reduced by 9% and 40% respectively because of the presence of the casting skin. In addition, the correlations between processing parameters (e.g. nodularity and section thickness) and the casting skin features were presented. The experimental results suggest that the Mg depletion because of metal-mould and metal-air interactions was the main reason for the formation of the casting skin.
format	Other
author	Boonmee, S. Stefanescu, D.M.
author_facet	Boonmee, S. Stefanescu, D.M.
author_sort	Boonmee, S.
title	The Occurrence and the Effect of Casting Skin in Compacted Graphite Iron
title_short	The Occurrence and the Effect of Casting Skin in Compacted Graphite Iron
title_full	The Occurrence and the Effect of Casting Skin in Compacted Graphite Iron
title_fullStr	The Occurrence and the Effect of Casting Skin in Compacted Graphite Iron
title_full_unstemmed	The Occurrence and the Effect of Casting Skin in Compacted Graphite Iron
title_sort	occurrence and the effect of casting skin in compacted graphite iron
publisher	INTEMA - UNMdP-CONICET
publishDate	2014
url	http://rinfi.fi.mdp.edu.ar/handle/123456789/16
work_keys_str_mv	AT boonmees theoccurrenceandtheeffectofcastingskinincompactedgraphiteiron AT stefanescudm theoccurrenceandtheeffectofcastingskinincompactedgraphiteiron AT boonmees occurrenceandtheeffectofcastingskinincompactedgraphiteiron AT stefanescudm occurrenceandtheeffectofcastingskinincompactedgraphiteiron
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The Occurrence and the Effect of Casting Skin in Compacted Graphite Iron

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