Phase-Field Simulation of D03-Type Antiphase Boundary Migration in Fe3Al with Vacancy and Solute Segregation

Abstract:

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Segregation of solute atoms and vacancies to migrating D03–type antiphase boundaries (APBs) in Fe3Al of the stoichirometric and an Al-rich compositions has been investigated in detail by a phase-field method developed in the previous study [Koizumi et al. Acta Mater 2009;57:3039] focusing on the quantitative relationship among the segregation, APB energy, driving-force, drag-force and APB mobility. It has been revealed that the drag-force by solute segregation depends considerably on the alloy composition and is responsible for the significant composition dependence of the migration kinetics of D03-APB whereas the composition dependences of driving-force and mobility are negligibly small.

Info:

Periodical:

Solid State Phenomena (Volumes 172-174)

Edited by:

Yves Bréchet, Emmanuel Clouet, Alexis Deschamps, Alphonse Finel and Frédéric Soisson

Pages:

1313-1319

DOI:

10.4028/www.scientific.net/SSP.172-174.1313

Citation:

Y. Koizumi et al., "Phase-Field Simulation of D03-Type Antiphase Boundary Migration in Fe3Al with Vacancy and Solute Segregation", Solid State Phenomena, Vols. 172-174, pp. 1313-1319, 2011

Online since:

June 2011

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$35.00

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