Abstract
The decomposition processes of a carburised Fe–C alloy, a Fe–C, a Fe–Cr–C and commercial SAE 52100 cast alloys (with a C content of about 1 mass%) have been studied by means of differential scanning calorimetry and dilatometry. The combination of these two experimental techniques is very powerful and allows the identification of all the stages occurring during tempering. Activation energies have been obtained by performing a Kissinger-like analysis and were used to infer the rate-determining step for each stage of decomposition. This parallel investigation allowed to determine the effect of the alloying elements on the different stages of tempering.
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Morra, P.V., Böttger, A.J. & Mittemeijer, E.J. Decomposition of Iron-based Martensite. A kinetic analysis by means of differential scanning calorimetry and dilatometry. Journal of Thermal Analysis and Calorimetry 64, 905–914 (2001). https://doi.org/10.1023/A:1011514727891
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DOI: https://doi.org/10.1023/A:1011514727891