A phase-field model for solid-state selective laser sintering of metallic materials

2018 ◽  
Vol 339 ◽  
pp. 677-685 ◽  
Author(s):  
Xing Zhang ◽  
Yiliang Liao
Keyword(s):  
Solid State ◽  
Phase Field ◽  
Field Model ◽  
Selective Laser Sintering ◽  
Phase Field Model ◽  
Laser Sintering ◽  
Metallic Materials

Microstructure Evolution During Solid-State Selective Laser Sintering of Metallic Materials: A Phase-Field Simulation

2019 ◽  
Author(s):  
Xing Zhang ◽  
Yiliang Liao
Keyword(s):  
Solid State ◽  
Microstructure Evolution ◽  
Phase Field ◽  
Laser Power ◽  
Laser Scanning ◽  
Large Scale ◽  
Selective Laser Sintering ◽  
High Energy ◽  
Laser Sintering ◽  
Scanning Velocity

Abstract Selective laser sintering/melting (SLS/SLM) is a rapid prototyping technique that utilizes a high-energy laser beam to bind powder particles together for solid part fabrication. Due to the presence of several factors, microstructure-based material modeling can be of significant importance for optimizing processing parameters. To date, most researchers have put their efforts on simulating the microstructure of SLM-processed component, while few attentions have been paid to investigate the evolving of microstructure during SLS. In this work, a phase-field model is proposed to simulate the microstructure evolution during the solid-state SLS process. The microstructure evolution as affected by the laser power and scanning velocity are studied. It is found that the width of sintering neck increases with the increase of laser power and the decrease of laser scanning velocity. The modeling predictions are compared with the experimental data regarding the neck width between adjacent particles. In addition, it is demonstrated that this model is capable of carrying out large-scale simulations.

scholarly journals An anisotropic phase-field model for solid-state dewetting and its sharp-interface limit

Nonlinearity ◽  
2017 ◽  
Vol 30 (4) ◽  
pp. 1465-1496 ◽  
Author(s):  
Marion Dziwnik ◽  
Andreas Münch ◽  
Barbara Wagner
Keyword(s):  
Solid State ◽  
Phase Field ◽  
Field Model ◽  
Phase Field Model ◽  
Sharp Interface ◽  
Sharp Interface Limit ◽  
Anisotropic Phase
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