Modelización de la reaustenización en aceros Fe-C con difusividad de carbono dependiente de la concentración

R. Mancini; C. Budde

doi:10.3989/revmetalm.2002.v38.i6.428

Modelling reaustenitisation in Fe-C steels with concentration-dependent diffusivity of carbon

Authors

R. Mancini Centro de Investigación de Materiales y Metrología. Córdoba
C. Budde Facultad de Matemática, Astronomía y Física. U.N. Córdoba.

DOI:

https://doi.org/10.3989/revmetalm.2002.v38.i6.428

Keywords:

Steels, Austenite, Phase transformation, Diffusion, Computer simulation,

Abstract

A finite difference method used to model reaustenitisation from a ferrite/cementite mixture in Fe-C steels is presented in this paper. Concentration-dependent carbon diffusivity in austenite is taken into account in order to generalize our earlier numerical model. We select some parameters, such as cementite dissolution time, and compare their values as calculated by different approximations available in the literature (in particular at steady state) for planar and spherical geometries. When the dependence of diffusivity on concentration or temperature is increased, the steady state approximation fails to predict correctly the above mentioned parameters and the use of numerical techniques becomes indispensable.

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Published

2002-12-30

How to Cite

Mancini, R., & Budde, C. (2002). Modelling reaustenitisation in Fe-C steels with concentration-dependent diffusivity of carbon. Revista De Metalurgia, 38(6), 426–432. https://doi.org/10.3989/revmetalm.2002.v38.i6.428

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Issue

Vol. 38 No. 6 (2002)

Section

Articles

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