Formation kinetics of austenite in pearlitic ductile iron

Payam Abdollahi; Alborz Amirsadeghi; Shahram Kheirandish; Shamsoddin Mirdamadi

doi:10.1007/s12613-012-0587-1

International Journal of Minerals, Metallurgy, and Materials ›› 2012, Vol. 19 ›› Issue (6) : 506 -510. DOI: 10.1007/s12613-012-0587-1

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Formation kinetics of austenite in pearlitic ductile iron

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Abstract

This work evaluated the isothermal transformation of austenite in unalloyed pearlitic ductile iron and drew the isothermal phase diagram of austenitization in the ductile iron. Austenite forms at grain boundaries and then grows up to graphite regions during austenitization. The formation kinetics of austenite complies with the Avrami equation, in which the parameter (n) ranges from 4.71 to 4.99. The start time and finish time of transformation can be calculated at each temperature using the Avrami equation.

Keywords

cast iron / ductility / pearlite / austenitization / kinetics / isothermal transformations

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Payam Abdollahi, Alborz Amirsadeghi, Shahram Kheirandish, Shamsoddin Mirdamadi. Formation kinetics of austenite in pearlitic ductile iron. International Journal of Minerals, Metallurgy, and Materials, 2012, 19(6): 506-510 DOI:10.1007/s12613-012-0587-1

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References

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[1]	Azevedo C.R.F., Garboggini A.A., Tschipitschin A.P. Effect of Austenite Grain Refinement on Morphology Product of Bainitic Reaction in Austempered Ductile Iron. Mater. Sci. Technol., 1993, 9, 705.

[2]	Chou J.M., Hon M.H., Lee J.L. The austenite transformation in ferritic ductile cast iron. Mater. Sci. Eng. A, 1992, 158(2): 241

[3]	Delia M., Alaalam M., Grech M. Effect of austenitizing conditions on the impact properties of an alloyed austempered ductile iron of initially ferritic matrix structure. J. Mater. Eng. Perform., 1998, 7(2): 265

[4]	Delia M., Alaalam M., Grech M. Effect of austenitising conditions on the impact properties of an alloyed austempered ductile iron of initially pearlitic matrix structure. Int. J. Cast Met. Res., 1997, 9(6): 345.

[5]	Nili Ahmadabadi M., Shamloo R. Control of austenitic transformation in ductile iron aided by calculation of Fe-C-Si-X phase boundaries. J. Phase Equilibria, 2001, 22(3): 194

[6]	Liu Y.C., Schissler J.M., Chobout J.P., Vetters H. Structural Evolution of Austempered Ductile Iron (ADI) during Tempering. Adv. Mater. Res., 1997, 4–5, 407