Analysis of vacancy agglomeration processes by Matusita's method for B2 FeAl

Kyosuke Yoshimi, Masafumi Tsunekane, Kouichi Maruyama

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


In this study, the exothermic DSC peaks observed in rapidly-solidified Fe-44.9at.%A1 ribbons and water-quenched Fe-48.5at.%A1 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.

Original languageEnglish
Title of host publicationIntermetallic-Based Alloys for Structural and Functional Applications
Number of pages6
Publication statusPublished - 2011
Event2010 MRS Fall Meeting - Boston, MA, United States
Duration: 2010 Nov 292010 Dec 3

Publication series

NameMaterials Research Society Symposium Proceedings
ISSN (Print)0272-9172


Conference2010 MRS Fall Meeting
Country/TerritoryUnited States
CityBoston, MA


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