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Coarsening of M23C6precipitates in an Fe-12.4Cr-0.13Cternary alloy has been investigated ageing at 780℃ up to 200h.Evolution of M23C6carbides at different ageing times was determined experimentally using transmission electron microscopy.Particle size distribution was obtained with different measuring methods.Simulations of coarsening of M23C6precipitates were carried out using computational thermodynamics and kinetics.Results showed low coarsening rates for M23C6precipitates in the Fe-Cr-C ternary alloy.Interfacial energy of M23C6 / ferrite interface is between 0.1and 0.3J · m -2 for the coarsening of M23C6ageing at 780℃.
Coarsening of M23C6precipitates in an Fe-12.4Cr-0.13Cternary alloy has been investigated at 780C up to 200h. Evolution of M23C6carbides at different age times was determined experimentally using transmission electron microscopy. Particle size distribution was obtained with different measuring methods. Simulations of coarsening of M23C6precipitates were carried out using computational thermodynamics and kinetics. Results showed low coarsening rates for M23C6precipitates in the Fe-Cr-C ternary alloy.Interfacial energy of M23C6 / ferrite interface is between 0.1 and 0.3J · m-2 for the coarsening of M23C6ageing at 780 ° C.