Paper Title:
Undesirable Graphite Morphologies Incidence in Inoculated Grey Irons
  Abstract

Successful inoculation is not guaranteed and effects may even be deleterious. The main risks are the appearance of types B and D graphite, associated with ferrite and/or carbides due to lack of control of undercooling during eutectic solidification. Alternatively coarse type C graphite in hypo to eutectic grey irons may result from inadequate or excessive inoculation. Sulphur and aluminium content in a molten iron are considered to be the main factors to control the degree of eutectic undercooling, graphite morphology and inoculation efficiency. Thermal conditions, such as superheating, inoculation and pouring temperature play an important role in controlling these effects. Cooling rates due to different mould materials and casting thickness were also considered. In order to resolve individual problems, different inoculant systems have to be considered, such as Sr-FeSi, Ca-FeSi, Ti,Ca-FeSi, Zr,Ca-FeSi, Ba,Ca-FeSi, RE-FeSi (Ca). The present paper made a synthesis of other published papers by the authors, but also added many original un-published results.

  Info
Periodical
Edited by
Ionel Chicinaş and Traian Canta
Pages
307-310
DOI
10.4028/www.scientific.net/AMR.23.307
Citation
S. Stan, I. Riposan, M. Chisamera, M. Barstow, "Undesirable Graphite Morphologies Incidence in Inoculated Grey Irons", Advanced Materials Research, Vol. 23, pp. 307-310, 2007
Online since
October 2007
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Karl Martin Pedersen, Niels Tiedje
Abstract:Hypereutectic ductile iron was cast in green sand moulds with four plates with thickness of 1.5, 2, 3 and 4 mm in each mould. Temperatures...
63
Authors: Sergio Villanueva Bravo, Kaoru Yamamoto, Hirofumi Miyahara, Keisaku Ogi
Abstract:The carbide and graphite formation and redistribution of alloy elements during solidification were investigated on Ni-hard type cast iron...
1023
Authors: Mohamed Ahmed Taha Hanafi, Nahed A. El Mahallawy, Ahmed M. El-Sabbagh, Talat El-Benawy, Hasan F. Hadla
Abstract:Phases’ evolution during the solidification of a hypoeutectic 3.92% C-equivalence cast iron was modelled by considering the cooling history...
293
Authors: Vitor Anjos, Carlos A. Silva Ribeiro, Fátima Dias, Wolfgang Baumgart, João Cunha
Abstract:Macro and microporosity in castings are a problem that persists at many foundries, despite the use of advance simulation software’s. This...
410
Authors: Jin Hai Liu, Guo Lu Li, Xue Bo Zhao, Xiao Yan Hao
Iron and Steel
Abstract:The influence of residual magnesium on compact graphite rate and characteristic of thermal analysis curve was studied by fading of magnesium...
1021