Paper Title:
Modeling of the Divorced Eutectic Solidification of Spheroidal Graphite Cast Iron
  Abstract

The solidification of the austenite-spheroidal graphite (SG) eutectic is one of the most complex and therefore most difficult liquid-to-solid transformations to describe through computational modeling. This is because the iron-carbon equilibrium phase diagram is an asymmetric diagram that predicts that at relatively low solidification velocities it is possible to produce primary austenite in a casting of eutectic composition. In addition, the two phases of the eutectic solidify as a divorced eutectic, with only the austenite being in contact with the eutectic liquid. The paper proposes a computational model for the eutectic solidification of SG iron with visualization of the microstructure evolution using a cellular automaton technique. The model is an extension of the earlier Zhu-Stefanescu model for primary phase solidification and includes the growth of primary SG in the liquid, of primary austenite and of the austenite-graphite eutectic controlled by carbon diffusion through the solid austenite shell. The model outputs realistic images of the microstructure evolution from the beginning to the end of eutectic solidification of SG cast iron.

  Info
Periodical
Edited by
Adel Nofal and Mohamed Waly
Pages
324-329
DOI
10.4028/www.scientific.net/KEM.457.324
Citation
H. L. Zhao, M. F. Zhu, D. M. Ştefănescu, "Modeling of the Divorced Eutectic Solidification of Spheroidal Graphite Cast Iron", Key Engineering Materials, Vol. 457, pp. 324-329, 2011
Online since
December 2010
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: Andrej Samoilov, Yuri Titovets, Nikolay Y. Zolotorevsky, Gottfried Hribernig, Andreas Pichler
Abstract:An experimental study of Fe-C-Mn-Cr low-carbon steels with varying Cr content is presented. Pronounced bay and a near-stasis behavior were...
311
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: Maria Jesus Santofimia, Lie Zhao, Yoshiki Takahama, Jilt Sietsma
Abstract:The quenching and partitioning (Q&P) process is a novel heat treatment for the development of advanced high strength steels that is raising...
3485
Authors: You Ping Ma, Xiu Lan Li, Lei Yang
Abstract:The effect of carbon content on primary austenite stability of high chromium white cast iron(15.0wt.%) was investigated by means of optical...
1684
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