Differential scanning calorimetry study on annihilation behavior of supersaturated thermal vacancies in B2-type FeAl

In this study, the exothermic DSC peaks observed in rapidly-solidified Fe-44.9at.%Al ribbons and water-quenched Fe-48.5at.%Al single crystals were analyzed by Matusita’s method in order to discuss the kinetics of the agglomeration processes of supersaturated vacancies. Both the nucleation and morphological factors, n and m, respectively were approximately 3 for the rapidly solidified ribbons and were approximately 2 for the water-quenched single crystals. Based on the Matusita’s idea, the m values suggest the growth of 3-dimensional voids in the rapidly solidified ribbons and the growth of 2-dimensional dislocations loops in the single crystals due to the agglomeration of supersaturated vacancies. In addition, the n values suggest that the nuclei of voids and dislocation loops existed in as-quenched samples. These interpretations are in good agreement with the results of TEM observations.

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Differential scanning calorimetry study on annihilation behavior of supersaturated thermal vacancies in B2-type FeAl

Cited by 6 publications

References 33 publications

Modeling of excess vacancy annihilation at different types of sinks

Modeling of excess vacancy annihilation at different types of sinks

Thermal vacancy behavior analysis through thermal expansion, lattice parameter and elastic modulus measurements of B2-type FeAl

Analysis of Vacancy Agglomeration Processes by Matusita’s Method for B2 FeAl

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