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BDG Informationszentrum<br />
Eisengusswerkstoffe<br />
Dokumenten-Nummer: 57820<br />
Tagungsbeitrag<br />
Nobuki, Tohru; Hatate, Minoru; Shiota, Toshio<br />
Publikationssprache: Englisch<br />
Notch Effects on Impact and Bending Characteristics of Spheroidal Graphite and Compacted<br />
Vermicular Graphite Cast Irons with Various Matrices<br />
Kerbeffekte bei Schlagzähigkeits- und Biegekennwerten von Gusseisen mit Kugelgraphit und Gusseisen mit<br />
Vermiculargraphit mit verschiedenen Grundgefügen<br />
The object of this study is to find out and evaluate systematically how the basic factors such as graphite-shape, external<br />
notch and matrix-characteristic affect the impact and bending characteristics of cast irons. The Spheroidal Graphite<br />
(SG) and Compacted Vermicular graphite (CV) cast iron samples were prepared, and their matrixes were modified into<br />
ferritic, pearlitic and bainitic in or<strong>der</strong> to make the various kinds of samples whose graphite-shape and matrix vary<br />
widely. From each sample we produced five kinds of Charpy-type specimens by adding five kinds of notches whose<br />
stress concentration factor (alpha ) varied from 1.0 (un-notched) to 4.8. The Charpy impact value decreases greatly in<br />
the range of alpha from 1 to 2.3 but decreases slightly in the range of alpha larger than 2.3. No influence to the<br />
fracture energy in the range of alpha larger than 2.3. Increasing of alpha results in mo<strong>der</strong>ate elevation of transition<br />
temperature of Charpy impact value and the transition temperature of CV cast ion is lower than that of SG one. The<br />
impact value in brittle fracture region of the cast iron samples were recognized to be a little bit larger than that of cast<br />
steel sample, and it was consi<strong>der</strong>ed to be caused by graphite which act as a kind of buffer effect against crack growth<br />
in brittle fracture.<br />
Kinki University, Higashi-Hiroshima, JP<br />
Erscheinungsjahr 2010<br />
S. S.392-397<br />
Seiten/Bil<strong>der</strong>/Tabellen/Quellen: 6S<br />
Eisengusswerkstoffe<br />
Dokumenten-Nummer: 57744<br />
Buch<br />
Nofal, Adel; Waly, Mohamed<br />
Publikationssprache: Englisch<br />
Proceedings of the Science and Processing of Cast Iron IX SPCI-9, 9.-13. November 2010, Luxor,<br />
Egypt<br />
Key Engineering Materials<br />
Erscheinungsjahr 2010<br />
S. Getrennte Zählung; CD<br />
<strong>Giesserei</strong> <strong>Literaturschau</strong>
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