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Meeting 2021 TMS Annual Meeting & Exhibition
Symposium Computational Techniques for Multi-Scale Modeling in Advanced Manufacturing
Presentation Title Multiphysics Simulation of Microstructure Evolution in Selective Laser Melting of AlSi10Mg
Author(s) Dehao Liu, Yan Wang
On-Site Speaker (Planned) Dehao Liu
Abstract Scope Selective laser melting (SLM) builds parts by selectively melting metallic powders with a high-energy laser beam. Nevertheless, the lack of fundamental understanding of the process-structure-property relationship for better quality control inhibits wider applications of SLM. Recently, a mesoscale simulation approach, called phase-field and thermal lattice Boltzmann method (PF-TLBM), was developed to simulate microstructure evolution of alloys in SLM melt pool with simultaneous consideration of solute transport, heat transfer, phase transition, and latent heat effect. In this work, a nucleation model is introduced to simulate heterogeneous nucleation at the boundary of the melt pool. The effects of latent heat and cooling rate on dendritic morphology and solute distribution are studied. The simulation results of AlSi10Mg alloy suggest that the inclusion of latent heat is necessary because it reveals the details of the formation of secondary arms, reduces the overestimation of microsegregation, and provides more accurate kinetics of dendritic growth.
Proceedings Inclusion? Planned:

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A Parametric Study of Grain Size and Its Volume Fraction Effect on Heterogeneous Materials Mechanical Properties
Computational Modeling of Nanoparticles Dispersion in Hybrid Process of Ink Jetting and Laser Powder Bed Fusion
Computational Multi-Scale Modeling of Segregation and Microstructure Evolution during the Solidification of A356 Ingots Processed via a 2-Zone Induction Melting Furnace
Effect of Nozzle Injection Mode on Initial Transfer Behavior of Round Bloom
Fluid Dynamics Effects on Microstructure Prediction in Single-Laser Tracks for Additive Manufacturing
In Situ and Operando Synchrotron Experiments for Additive Manufacturing Model Validation
Investigation of Powder Spattering in Laser Powder Bed Fusion through Multi-physics Modeling and High-speed Synchrotron X-ray Imaging
Machine-learning Informed Design of High-strength Gradient Metals for Additive Manufacturing
Microstructural Evolution and Defect Formation During Pulsed and Continuous Selective Laser Melting
Microstructure Based Modeling of Friction Stir Welded Joint between Dissimilar Metals Using Crystal Plasticity
Modeling Material Behavior during Continuous Bending Under Tension for Inferring the Post-necking Strain Hardening Response of Ductile Sheet Metals: Application to Dual-phase Steels
Modeling the Role of Local Crystallographic Correlations in Microstructures of Ti-6Al-4V Using a Lamellar Visco-plastic Self-consistent Polycrystal Plasticity Formulation
Multiphysics Simulation of Microstructure Evolution in Selective Laser Melting of AlSi10Mg
Multiscale Crystal Plasticity in Integrated Computational Materials Engineering
Particle Resolved Simulation of Laser Powder-bed Fusion Including Metal Evaporation and Vapor Plume Dynamics
Phase-field Modeling of The Evolution Kinetics of Porous Structure During Dealloying of Binary Alloys
Predicting Mechanical Performance in Additive Manufacturing Components Using Deep Learning
Smoothed Particle Hydrodynamics based approach for 3D Modeling of Linear Friction Welding Process
Study on the In-mold Flow Behavior Driven by a Subsurface Electromagnetic Stirring for IF Steel Slab Casting
Synchrotron Calibrated Lagrangian Particle Tracking of Melt-pool Ejections during Laser Powder Bed Fusion

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