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BDG Informationszentrum<br />
Eisengusswerkstoffe<br />
Dokumenten-Nummer: 57825<br />
Tagungsbeitrag<br />
Serrallach, Joan; Lacaze, Jacques; Sertucha, Jon; Suarez, Ramon; Monzon, Adrian<br />
Publikationssprache: Englisch<br />
Effect of Selected Alloying Elements on Mechanical Properties of Pearlitic Nodular Cast Irons<br />
Einfluss ausgewählter Legierungselemente auf die mechanischen Eigenschaften von perlitischem Gusseisen mit<br />
Kugelgraphit<br />
There is a continuous demand for low-cost nodular cast irons with improved mechanical properties, this being an<br />
industrial requirement both for pearlitic as well as for ferritic grades. Developments in pearlitic nodular irons should lead<br />
to alloys with higher and higher strength while retaining some ductility in the as-cast state so as to respond to demands<br />
related to castings for high power automotive engines in competition with steel castings and ADI. According to these<br />
aims, several alloying elements have been selected and added separately or combined to standard commercial nodular<br />
cast irons. In all cases, only low-level additions were made and their effects on the microstructure and mechanical<br />
properties at room temperature have been characterized and are discussed. A statistical analysis has been performed<br />
on the data obtained that accounts for changes in alloying additions as well as for variations in process parameters.<br />
INFUN, Sant Vicenc dels Horts, ES; CNRS UMR 5085, Centre Interuniversitaire de Recherche et d'Ingenierie des<br />
Materiaux (CIRIMAT), ENSIACET, INPT, Universite Paul Sabatier, Toulouse, FR; AZTERLAN - Centro de Investigacion<br />
Metallurgica, Durango, ES<br />
Erscheinungsjahr 2010<br />
S. S.361-366<br />
Seiten/Bil<strong>der</strong>/Tabellen/Quellen: 6S<br />
Eisengusswerkstoffe<br />
Sheikholeslam, A.; Nili-Ahmadabadi, Mahmoud; Rassizadehghani, J.<br />
Dokumenten-Nummer: 57852<br />
Publikationssprache: Englisch<br />
The Effect of Partial Melting Homogenization on the Mechanical Properties of Thick Section<br />
Austempered Ductile Iron Containing 2% Mn<br />
Einfluss einer partiellen Schmelzehomogenisierung auf die mechanischen Eigenschaften von Austempered Ductile Iron<br />
mit 2 % Mangan bei großer Wanddicke<br />
Elements such as Mn and Mo may be added to ductile iron to improve its hardenability and mechanical properties, but<br />
segregation of these elements could result in the reduction of mechanical properties and must therefore be consi<strong>der</strong>ed<br />
during the manufacturing of thick section ductile iron. In this research the microstructures of cast specimens<br />
containing 2% Mn were studied by optical microscopy and scanning electron microscopy. Results showed that<br />
manganese segregates in the intercellular areas while silicon segregates in the regions around graphite nodules. Partial<br />
Melting Homogenization (PMH) was carried out on the samples to reduce segregation. Analysis of the results showed<br />
that homogenization has been done successfully and segregation in the ductile iron matrix was significantly reduced.<br />
The successful effect of homogenization was also studied on austempered samples. PMH prior to austempering resulted<br />
in a very uniform bainitic microstructure. Tensile tests were carried out on the samples which showed improved<br />
mechanical properties due to combined PMH process and austempering process.<br />
University of Tehran, IR<br />
Erscheinungsjahr 2010<br />
S. S.193-198<br />
Seiten/Bil<strong>der</strong>/Tabellen/Quellen: 6S<br />
<strong>Giesserei</strong> <strong>Literaturschau</strong>
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