Blázquez Gámez, Javier SebastiánMillán, Mitchel D.Conde Amiano, Clara FranciscaConde Amiano, AlejandroConde Amiano, Alejandro2016-12-072016-12-072007Blázquez Gámez, J., Millán, M.D., Conde Amiano, C.F. y Conde Amiano, A. (2007). On the isothermal kinetics analysis of transformations in metastable systems. A combined use of isothermal and non-isothermal calorimetry. Philosophical Magazine, 87 (27), 4151 p.-4167 p..1478-6435http://hdl.handle.net/11441/49831A procedure to optimize the isothermal calorimetric data of very slow transformation processes of metastable systems is proposed. The method uses an experimental baseline to identify the transitory effects due to the equipment. Moreover, the combined use of isothermal and non-isothermal results is shown to be effective to overcome the intrinsic problems of low signal and signal drift for such processes. The procedure has been applied to the analysis of the nanocrystallization kinetics of the Fe60Co18Nb6B16 alloy at different devitrification stages. Based on microstructural observations, an instantaneous growth approach was assumed and a phenomenological expression of the dependence of the nucleation frequency with both the transformed fraction and the temperature was obtainedapplication/pdfengAttribution-NonCommercial-NoDerivatives 4.0 Internacionalhttp://creativecommons.org/licenses/by-nc-nd/4.0/CrystallizationNanocrystalline microstructurePhase transformation kineticsinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccesshttps://doi.org/10.1080/14786430701530990