V. G. Niziev,1 A. V. Koldoba,2 F. Kh. Mirzade,1 V. Ya. Panchenko,1 Yu. A. Poveschenko,3 M. V. Popov3
1Institute on Laser and Information Technologies (Russian Federation) 2Institute for Mathematical Modeling (Russian Federation) 3M. V. Keldysh Institute of Applied Mathematics (Russian Federation)
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.
Direct laser sintering of a mixture of two metal powders with significantly different melting points is
investigated by numerical simulation. The model is based on self-consistent non-linear continuity equations for volume
fractions of components and on energy transfer equations for the powder mixture. It includes the movement of the solid
particles due to shrinkage because of the density change of the powder mixture and the liquid flow driven by the
capillary and gravity forces. The liquid flow is determined by Darcy's law. The effect of surface settlement of the
powder is obtained. The width increasing rate of the melting zone depend both on the parameters of the laser radiation
(on the power of the beam) and on the physical parameters of the particle's material, and it increases with the increasing
of the penetrability or the increasing of the phase-transition heat. The increasing of the laser power under other factors
being equal results in the acceleration of the melting front propagation.
V. G. Niziev,A. V. Koldoba,F. Kh. Mirzade,V. Ya. Panchenko,Yu. A. Poveschenko, andM. V. Popov
"Numerical modeling of sintering of two-component metal powders with laser beams", Proc. SPIE 7994, LAT 2010: International Conference on Lasers, Applications, and Technologies, 79941W (17 February 2011); https://doi.org/10.1117/12.881336
ACCESS THE FULL ARTICLE
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.
The alert did not successfully save. Please try again later.
V. G. Niziev, A. V. Koldoba, F. Kh. Mirzade, V. Ya. Panchenko, Yu. A. Poveschenko, M. V. Popov, "Numerical modeling of sintering of two-component metal powders with laser beams," Proc. SPIE 7994, LAT 2010: International Conference on Lasers, Applications, and Technologies, 79941W (17 February 2011); https://doi.org/10.1117/12.881336