Numerical Simulation of Microstructural Evolution via Phase-Field Model Coupled  to the Solutal Interaction Mechanism

Ferreira, Alexandre Furtado; Tomaskewski, Ingrid Meirelles Salvino; Paradela, Késsia Gomes; Silva, Dimas Moraes da; Sales, Roberto Carlos

doi:10.4236/msa.2015.610092

Cited by 1 publication

(2 citation statements)

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“…The convection mode would be dominant in consideration of that the droplet particles are heated in the air flow. Physical parameters for numerical analysis are listed in Table 1 [15][16][17][18] . According to the Lagrangian motion, equation of particles can be obtained as follows:…”

Section: Twas Flight Dynamicsmentioning

confidence: 99%

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Microstructure and Flight Behaviors of Droplet and its Solidification in Twin-Wire Arc Sprayed Ni-Al Composite Coatings

Wang

Liu

et al. 2018

Mat. Res.

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Droplet flight and solidification behaviors during twin-wire arc sprayed (TWAS) composite coatings were systematically investigated. Both theoretical model and numerical method were established for calculating the droplet deformation, breakup and solidification process in air flow based on the volume of fluid (VOF) dual-phase flow model jointed with the standard k-ε model. The experimental simulation results indicate that TWAS droplet is broken through explosion or two steps breaking process. The calculation of TWAS gas flight dynamics demonstrates that the TWAS particles are accelerated at first and then slowed down. Microstructure of the TWAS prepared Ni-5wt.%Al and Ni-20wt.%Al composite coating was accordingly characterized by XRD, SEM and TEM, so the phase compositions of the Ni-Al composite coatings were obtained. TEM analysis also showed that an amorphous phase was formed according to the characteristic of diffraction ring in Ni matrix solid solution at an original state.

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Section: Twas Flight Dynamicsmentioning

confidence: 99%

“…The detailed simulation process is displayed about atomization droplets. Thermo-physical properties of flame gas and particle are listed in Table 2 [15][16][17][18] . Fig.…”

Section: Atomization Droplet Breakup Behaviormentioning

confidence: 99%