Abstract
The computer simulation of shaped castings is now in progress and introduced to foundry industry. The simulation of. solidification and cooling processes in a casting is a useful tool in the process of designing a casting optimally with respect to several phenomena like microstructure development and mechanical properties. Today the heat transfer calculations can be done in a FEM or FDM environment including solidification and solid state relations in shaped castings. The macroscopic heat transfer have been coupled to kinetic growth laws to describe the transformation rate. The macro and micro models of solidification and solid state transformation have been used to calculate the fraction and coarseness in nodular cast iron. The coarseness of the solidified structure is an input to the austenite transformation to ferrite and pearlite. The amount of structure has been related to mechanical properties. the mechanical properties of nodular cast iron depend on the cooling rate and other metallurgical factors. It is of great interest to calculate the variation of mechanical properties in a casting. Iso hardness graphs have been plotted for experimental castings. Good agreement has been achieved between experiments and calculations.
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References
WETTERFALL S.E., FREDRIKSSON H., HILLERT M.: J. Iron and Steel Institute (1972) 323.
LACAZE J.: Internal communication 1987.
LACAZE J., FREDRIKSSON H. AND LESOULT G.: Eutectic solidification of S.G. Fe-C-Si Alloys. Presented at Sheffield conferences, sept. 1987.
LACAZE J., SUNDMAN B.: An assessment of the Fe-Si system with ordering of the bcc phase (under preparation).
Lacaze J.: Study of the Fe-C-Si system. (under preparation).
SCHEIL: Metallforschung. 2(1947), p. 69.
KAGAWA A., OKAMOTO T.: Metal Science (1980) 519.
H. FREDRIKSSON, I.L. SVENSSON: “Computer simulation of the structure formed during solidification of cast iron.” The physical Metallurgy of Cast Iron. Material Research Society 34 (1984) 273.
R.W. HEINE: “The Carbon Equivalent Fe-C-Si Diagram and its Application to Cast Irons.” AFS Cast Metals Research Journal, June 1971, p. 49.
R.W. HEINE: “The Fe-C Transformation Diagram Related to the Solidification of Cast Irons.” AFS Transactions, 1970, vol 78, p. 187.
J.ÅGREN: “A Thermodynamical Analysis of the Fe-Si-C System.” between 973 and 1373 k. TRITAMAC - 0125. October 1977.
D.M. STEFANESCU: “Computer modeling of the solidification of eutectic alloys”. The case of cast iron. Proceeding Society for Metals Materials Science Division Computer Simulation. The Metallurgical Society in Toronto, Canada, October 13–17, 1985.
J. Ågren: “Computer simulation of the Austenite/Ferrite diffusional transformation in low alloyed steels”. TRITAMAC, April 1981.
E. LUNDBÄCK, I.L. SVENSSON, J. THORGRIMSSON: “On calculation of structure and mechanical properties in grey cast-iron”. Proceeding of “Solidification Processing 1987”, Sheffield, England 21–24 September 1987.
I.L. SVENSSON, E. LUNDBÄCK: “ Computer simulation of Castings” MRS-symposium: State of the art of computer simulation of casting and solidification processes. Strasbourg, France 17–19 June 1986.
I.L. SVENSSON, E. LUNDBÄCK: “Simulation of grey castiron in a shaped casting”. Proceeding of the NUMIFORM’86 Conference, Göteborg, 25–29 August 1986.
C.S. KANETKAR: “Computer simulation of microstructural evolution during solidification of cast iron and aluminium-silicon alloys.” Thesis 1988, University of Alabama, Tuscaloosa, Alabama, USA.
E.O. LISELL: Segjärn. Några synpunkter på egenskaper och användningsområden. Teknisk information, Verkstadsteknik nr 1–1955, p. 9.
L.E. BJÖRKEGREN: Intern communication 1980. Swedish Foundry Association, Jönköping.
CRANK J: The Mathematics of diffusion, second ed. 1975.
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© 1988 Kluwer Academic Publishers
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Lundbäck, E., Svensson, I.L., Persson, PE. (1988). Modelling of Structure Formation and Relation to Mechanical Properties of Nodular Cast Iron. In: Chenot, J.L., Oñate, E. (eds) Modelling of Metal Forming Processes. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-1411-7_5
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DOI: https://doi.org/10.1007/978-94-009-1411-7_5
Publisher Name: Springer, Dordrecht
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