Numerical Simulation of Three-Dimensional Molten Pool Temperature Field and Flow Field for Laser Melt Injection Based on Fluent

Zhao, Lei; Wang, Zi; Jiang, Xin; Zhang, Jian; Zhao, Mei

doi:10.4028/www.scientific.net/amr.538-541.1837

Cited by 4 publications

(2 citation statements)

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“…The forces acting within the Ti–6Al–4V fluid include gravity, thermal buoyancy, and surface tension. Thermal buoyancy is expressed as follows [26]: where is the density, is the thermal expansion coefficient, is the temperature, and is the initial temperature.…”

Section: Methodsmentioning

confidence: 99%

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Laser gas oxidising of Ti–6Al–4V surface: experimental and numerical investigation

Guo

Bian

Zhang

et al. 2022

Surface Engineering

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The laser gas oxidising of Ti-6Al-4V surface was studied. Confocal laser scanning microscopy techniques were used to investigate its two-and three-dimensional surface topographies. Gas flow behaviour was simulated to define the minimum O 2 concentration required for Ti-6Al-4V to self-sustain combustion. To understand the flow behaviour of the Ti-6Al-4V fluid, a highspeed camera monitored the evolution of the Ti-6Al-4V fluid, and the flow behaviour was simulated. Experimental and simulation results show that Ti-6Al-4V can self-sustain combustion with a high O 2 to Ar gas flow ratio, and the oxidising layer is rough with macroscopic cracks, while a low O 2 to Ar gas flow ratio results in a smooth oxidising layer without cracks. Ti-6Al-4V can self-sustain combustion when the O 2 concentration exceeds 65%. Furthermore, the laser molten pool and self-sustaining combustion zone mix and flow together, and a large self-sustaining combustion zone leads to a low convection velocity.

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Section: Methodsmentioning

confidence: 99%

“…The forces acting within the Ti-6Al-4V fluid include gravity, thermal buoyancy, and surface tension. Thermal buoyancy is expressed as follows [26]:…”

Section: Numerical Simulationmentioning

confidence: 99%