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Meeting 2023 TMS Annual Meeting & Exhibition
Symposium 2023 Technical Division Student Poster Contest
Presentation Title SPG-32: Melt-pool Dynamics during Multiple-laser-beamed Powder Bed Fusion of Stainless Steel
Author(s) Marco Rupp, Shuichiro Hayashi, Claire Dashe, Wenxuan Zhang, Craig B. Arnold
On-Site Speaker (Planned) Marco Rupp
Abstract Scope Laser-based Powder Bed Fusion (L-PBF) is an emerging additive-manufacturing technique capable of creating complex structures with high resolution out of metal powders. However, current limitations in the processing speeds and resulting microstructures have hindered the advancement of L-PBF. In this study we have devised a multiple-laser beam setup and investigated the fundamental implications of using a multiple-laser setup. For the experiments, two 1064-nm Nd-YAG-lasers operating in the continuous-wave mode were focused onto a layer of 316L stainless steel powder. When the two laser beams were scanned in parallel at a specific parameter range, a new melt-pool regime displaying a periodic pattern appeared. This pattern was attributed to be a result of the growth and decline of the melt-pool due to the Rayleigh-plateau instability. Additionally, we were able to link the geometry of the melt-track to the energy input and melt-pool dynamics.
Proceedings Inclusion? Undecided
Keywords Additive Manufacturing, Solidification,

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

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SPG-12: Synthesis and Characterization of Fullerene-Antibody Conjugate Energetic Nanoparticles (FACE-NP) for Bladder Cancer Treatment
SPG-15: Transition Mechanism for the Metastable Phases in Al-Zn-Mg Alloys: A Novel Molecular Dynamics Approach
SPG-16: A Computer Vision Method of Grain Segmentation for Additive-manufactured Haynes 282 Alloys Under Various Heat Treatments
SPG-17: Characterization of Failure Mechanisms for Multimaterial Interfaces Manufactured with Additive Friction Stir Deposition
SPG-18: Characterization of Microstructural Heterogeneities in Electron Beam Additively Manufactured Haynes 282
SPG-19: Comparison of Experimental and Analytical Melt Pool Geometries for High Thermal Conductivity Refractory Metals Using ANSYS
SPG-1: Determination of Mechanical, Thermal and Barocaloric Properties of Elastomers by Rheological Techniques for Hydrostatic Pressure based Solid State Refrigeration
SPG-20: Correlating Laser Process Conditions to Balling Severity with Time-Resolved Synchrotron X-ray Visualization
SPG-21: Development of a Generalized Fatigue Assessment Approach for Steel Castings
SPG-22: Effect of Chemical Pretreatment on Properties of Natural Fiber Reinforced Composites for 3D Printing
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SPG-24: Effect of Process Parameters on Texture and Anisotropy of Ti-6Al-4V Wall Components Made by Wire-feed DED Process
SPG-25: Effects of the Reduction Temperature and Amount of Diluent on the Properties of High-purity Tantalum Powder Prepared via the Hunter Process
SPG-26: Effects of Varying Heat Accumulation in Laser Powder Bed Fusion on Microstructure Outcomes in Ti-6Al-4V
SPG-27: Evaluating the Effect of Tool Offset on Repaired AA7050 by Additive Friction Stir Deposition
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SPG-29: In Operando Synchrotron X-ray Tomography Study of Fine Eutectic Polyphase Solidification Patterns
SPG-2: Extraction of Niobium and Tantalum Oxides from Columbite Concentrate
SPG-30: Induction-Coupled Thermomagnetic Processing of Fe-C Alloys
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SPG-32: Melt-pool Dynamics during Multiple-laser-beamed Powder Bed Fusion of Stainless Steel
SPG-33: Modeling for Time Dependent Grain Boundary Evolution
SPG-34: Multi-scale In Situ Studies of Deformation Mechanism of L-PBF 316L Stainless Steels
SPG-36: On the Influence of Gaussian and Ring-shaped Beam Profiles on Quality and Energy Consumption in L-PBF of Inconel 718
SPG-37: Oxide Morphology and Growth Kinetics for Additively Manufactured 316L Austenitic Stainless Steel High Temperature Steam Exposures
SPG-38: Printability and Defects in W & W -alloys by Directed Energy Deposition
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SPG-3: Flexural Properties of Low Density Polyethylene Hybrid Nanocomposite Reinforced with Linen and Aramid Fabric
SPG-40: Removal of Rare Metal Impurities by Electron-beam Melting Refining Process
SPG-41: Strain Evolution and Damage Development during Tight-radius Bending of Advanced High Strength Steels
SPG-44: Advanced Characterization of the Local Atomic Orders and Their Effects on the Mechanical Properties in Metallic Glasses
SPG-45: Atomistic Modeling of Energy Barriers to Dislocation Processes in Metals
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SPG-57: Sintering and Densification Mechanism of HfB2 Based Ultra High Temperature Ceramics for Hypersonic Space Vehicles
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SPG-7: First-Principles Study of Vacancy Formation Energy in High-Entropy Alloys
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SPU-10: Mechanochemistry for Creation of Functional Surface Treatments
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SPU-12: Viscosity Characterization of an Energetic Initiator Ink for 3D Printing
SPU-13: An In-situ Radiography Study on Meltpool Dynamics and Fluid Flow as a Function of Laser Power in Ti-6Al-4V Raster Melts
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SPU-1: Cultural Heritage Science: Authentication of Native American Artwork via Materials Characterization and Forensic Analysis
SPU-2: Investigation of High Entropy Precursor Powder Synthesis for Transparent Ceramic Synthesis
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