engleski

Application of a Numerical Method for the Analysis of Metglas 2826 MB Crystallization Kinetics

Crystallization kinetics of &#947 ; -FeNiMo solid solution in Metglas 2826 MB was studied by isothermal differential scanning calorimetry (DSC). The Johnson-Mehl-Avrami (JMA) equation was used to describe crystallization process. In order to calculate kinetic parameters a new model for numerical analysis of isothermally obtained DSC data was successfully applied. For the purposes of method evaluation the classical, analytical method of data analysis was also performed. The apparent activation energies obtained were 280&plusmn ; 22 kJ mol-1 and 296&plusmn ; 23 kJ mol-1 for analytical and numerical method, respectively. The Avrami exponents obtained by the both methods lie between 1.75 and 1.95.

Crystallization kinetics; Differential scanning calorimetry; Johnson-Mehl-Avrami equation; Metglass 2826 MB; Numerical model.

nije evidentirano