Phase-Field Simulation of Antiphase Boundary Migration in Intermetallic Compounds with Solute and Vacancy Segregation

2011 ◽  
Vol 1295 ◽  
Author(s):  
Yuichiro Koizumi ◽  
Tatsuya Yokoi ◽  
Masayuki Ouchi ◽  
Yoritoshi Minamino ◽  
Masato Yoshiya ◽  
...  
Keyword(s):  
Intermetallic Compounds ◽  
Phase Field ◽  
Boundary Migration ◽  
Antiphase Boundary ◽  
Phase Field Simulation ◽  
Field Simulation ◽  
Vacancy Distribution

ABSTRACTThe effects of solute and vacancy segregation on APB migration in Ti3Al, and their dependence on composition, have been investigated by using a phase-field simulation in which vacancy distribution is taken into account. Al-atoms are depleted and vacancies segregate at APB in stoichiometric Ti3Al (Ti-25Al), whereas Al-atoms segregate and vacancies are depleted in Alrich one (Ti-28Al). The simulation indicates that APB in Ti3Al migrates much faster in Ti-25Al than in Ti-28Al with the effect of vacancy segregation whereas it migrates slightly faster in Ti-28Al than in Ti-25Al in the absence of the effect of vacancy segregation.

Phase-Field Modeling and Simulation of Nucleation and Growth of Recrystallized Grains

2007 ◽  
Vol 558-559 ◽  
pp. 1195-1200 ◽  
Author(s):  
Tomohiro Takaki ◽  
A. Yamanaka ◽  
Yoshihiro Tomita
Keyword(s):  
Dislocation Density ◽  
Crystal Plasticity ◽  
Phase Field ◽  
Subgrain Size ◽  
Boundary Migration ◽  
Phase Field Model ◽  
Phase Field Simulation ◽  
Spontaneous Nucleation ◽  
Field Simulation ◽  
Subgrain Rotation

The novel coupling recrystallization model is proposed in this study. First, the deformation microstructure was simulated by the finite element method based on the strain gradient crystal plasticity theory. The calculated dislocation density and crystal orientation were transferred to the recrystallization phase-field simulation. The initial subgrain structures used in phase-field simulation were determined by a relationship between dislocation density and subgrain size with the dislocation density distribution calculated by crystal plasticity simulation. The so-called KWC phase-field model, which can introduce both subgrain rotation and grain boundary migration, was employed, and spontaneous nucleation and grain growth were simulated simultaneously.

scholarly journals Evaluation of Ordering Mobility from Antiphase Boundary Mobility in Fe3Al Using Phase-field Simulation

2012 ◽  
Vol 52 (9) ◽  
pp. 1678-1682 ◽  
Author(s):  
Yuichiro Koizumi ◽  
Samuel Miller Allen ◽  
Masayuki Ouchi ◽  
Yoritoshi Minamino
Keyword(s):  
Phase Field ◽  
Antiphase Boundary ◽  
Boundary Mobility ◽  
Phase Field Simulation ◽  
Field Simulation

Phase-field simulation of dose rate effect on the Cu precipitation with neutron irradiation

2021 ◽  
Vol 23 (7) ◽  
pp. 4217-4229
Author(s):  
Shahid Maqbool ◽  
Yongsheng Li ◽  
Suleman Muhammad ◽  
Zhengwei Yan ◽  
Shujing Shi
Keyword(s):  
Dose Rate ◽  
Neutron Irradiation ◽  
Phase Field ◽  
Volume Fraction ◽  
Rate Effect ◽  
Phase Field Simulation ◽  
Field Simulation ◽  
Cu Alloys ◽  
Dose Rate Effect

Radiation-enhanced precipitation (REP) in Fe–Cu alloys results in higher volume fraction and radius of Cu precipitates.

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