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Kinetics of pearlite spheroidization

Matusiewicz P., Augustyn-Nadzieja J., Czarski A., Skowronek T.

Archives of Metallurgy and Materials

2017

Vol. 62, iss. 1

231--234

The pearlite spheroidization in Fe-0.76%C high purity steel was investigated. The samples of a coarse pearlite microstructure were isothermal annealed at 700, 680, 660, 640 and 620°C for various times, up to 800 hours. For quantitative description of the spheroidization process stereological parameter, SV (ferrite/cementite interface surface density) was used. The activation energy 104.8±11.4 kJ/mol was found for the spheroidization process. This value shows good agreement with the activation energy for iron and carbon diffusion along a ferrite/cementite interface, so the coupled interface diffusion is the rule-controlling process.

Mikroskopia optyczna w nowoczesnym laboratorium. Pomiary oraz ich interpretacja

Wojnar L.

LAB Laboratoria, Aparatura, Badania

2000

R. 5, nr 5

11-16