ABSTRACT Grey cast iron is characterized by presence of a large portion of its carbon in the form of
graphite flakes which are observable in their microstructures. Their properties are
significantly dependent on the micro-constituents of the, cast iron components. A way of
controlling the microstructure of cast iron is through the controlled cooling rates during
solidification. To control cooling rate, the heat storage capacity of the mould is important.
This paper presents the characteristic effects of graphite flake sizes on some mechanical
properties of grey cast iron. Six mould materials with heat storage capacities ranging from
1.52 kJ.m-2.K-1.s-1/2 to 2.16 kJ.m-2.K-1.s-1/2 were prepared and used to cast some grey cast iron
samples whose microstructures were observed by optical microscopy. Mechanical properties
of the grey iron were evaluated. The results show that the properties increased with the heat
storage capacity of the mould. Also, the microstructures show a dependence on heat storage
capacity of the mould.
Cite this paper
A. Adedayo and B. Aremo, "Influence of Mould Heat Storage Capacity on Properties of Grey Iron," Journal of Minerals and Materials Characterization and Engineering, Vol. 10 No. 4, 2011, pp. 387-396. doi: 10.4236/jmmce.2011.104028.
 Adedayo A.V. 2010 Effects of addition of iron filings to green moulding sand on the
microstructure of grey cast iron. Journal of the Brazilian Society for Mechanical
Sciences and Engineering, Vol. XXXII, No 2, pp 171-175
Rajput R.K. 2006 Engineering materials and metallurgy, 1st ed. S. Chand & Co. New Delhi., pp 13, 28-31, 101
DeGarmo E.P., Black J.T., Kosher R.A.2003 Material and processes in manufacturing
9th ed. John Wiley and Sons, New York, pp 60-100, 375 - 408, 1100-1123
Heine R.W., Loper C.R., Rosenthal P.C. 2003 Principles of metal castings, 26th reprint, TMH ed. New York, pp 86.
Moffatt, W.G.; Pearsall, G.W.; Wulff, J. 1964 The structure and properties of
materials, structure, vol.1, John Wiley and Sons, Brisbane, pp 134, 195
Rajan T.V., Sharma C.P., Sharma A. 1988 Heat treatment principles and techniques,
Prentice-Hall of India, Private Ltd, New Delhi, pp11-14, 289, 331.
Adedayo A.V., Ibitoye, S.A., Oyetoyan, O.A. 2010 Annealing heat treatment effects
on steel welds. Journal of Mineral, Materials Characterization and Engineering, Vol.
9, No. 6 pp 601-611.
Imaev R.M., Imaev V.M., Khismatullin T.G. 2006Refinning of the microstructure of
cast intermetallic alloy Ti-43% Al-X (Nb, Mo, B) with the help of heat treatment,
Metallovedenie I Termicheskaya Obrabotka Metallov, No.2, pp 38-41
Adedayo A.V. 2009a Effects of carbon content on steel welds. Journal of Research in
Technology and Engineering Management, Vol. 2, No. 1 pp131-135
Adedayo, A.V 2009b Effects of Iron Filings on the Properties of Green Moulding
Sand, Proceedings of 2nd National Conference of Institute of Technology, Kwara State Polytechnic, Ilorin, Vol 2, No 1, pp45-49
Higgins, R.A. 2004 Engineering metallurgy: Applied physical metallurgy. 6th ed. Viva books, New Delhi, pp 355, 356
Flemings M.C. 1974 Solidification processing; Materials science and engineering
series. McGraw-Hill New York. pp 184
Brophy, J.H., Rose, R.M.; Wulff J., 1964 The structure and properties of materials,
thermodynamics, vol.2, John Wiley and Sons, Brisbane, pp 113-114, 188-189
DeGarmo E.P., Black J.T., Kosher R.A. 1999 Material and processes in
manufacturing 8th ed. John Wiley and Sons, New York, pp 90-93,345-415, 1114
Callister W.J. 1985 Materials science and engineering, an introduction. John Wiley &
Sons, NY, pp 717 -731