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Meeting 2022 TMS Annual Meeting & Exhibition
Symposium Late News Poster Session
Presentation Title J-9: Influence of Process Parameters on Defect Formation for AA 6061 via Laser Powder Bed Fusion Additive Manufacturing
Author(s) Sivaji Karna, Lang Yuan, Andrew Gross, Tianyu Zhang, Rimah Al-Aridi, Faith Buchanan, Timothy Krentz, Dale Hitchcock
On-Site Speaker (Planned) Sivaji Karna
Abstract Scope AA 6061 is one of the most commonly used aluminum alloys in aerospace and automotive applications. However, applications of additively manufactured AA 6061 via the laser powder bed fusion (LPBF) process are limited, owing to the formation of extensive pores and cracks during the rapid solidification. In this study, bead-on-plate experiments, informed by numerical simulations based on Rosenthal solutions, covering a wide range of cooling rates, were performed to understand the melt pool behavior, including size and stability. Process parameters were then selected to print cubic samples. Samples are characterized using microscopy techniques. Samples with a relative density higher than 99.5 % were achieved with high power, high scan speed, and relatively low energy density. Cracks were observed in all samples, and the influence of the process parameters on crack initiation, size, and distribution was analyzed. Lastly, methods to mitigate crack formation, such as heated bed are discussed.
Proceedings Inclusion? Undecided


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A-24: Geometric Analysis of the Growth Front of Iron Borides Fe2B in AISI-1018 Steel
A-25: High Solid Content Porous Cordierite with Controllable Structure Prepared by Pickering Emulsion Technology
A-27: Self-healing Behavior of Fe-Ni Base Superalloy Based on Spontaneous Segregation of Boron
A-28: Software Design for ICME, PSPP and Multiscale
A Novel Electrolytic Process for the Production of Cu Metal from Chalcocite in CuCl – KCl Molten Salt at 473 K
B-4: Corrosion Evaluation of Cold Spray Materials on SS304L Material
C-4: Correlation between Crystallographic Microstructure of Electrodeposits and Adsorption of Additives through Electrochemical Calculations at Feature Scale
C-5: Effect of Antimony on the Microstructure Evolution and Mechanical Properties of Near Eutectic Sn-Bi and Sn-Bi-Ag Alloys
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D-29: DFT Studies on the HER Activity, Electronic Structure, and Bonding Properties of the Boride MoxVx-1B2 (0 < x < 1)
D-30: Electricity Properties of Foam Insulation Materials
D-31: Extraction of Strategic Metals from Spent Catalyst by Using Integrated Hydrometallurgical Approach
D-33: Iron-rich Layered Chalcogenide Fe5Ge2Te2 for Highly Efficient Hydrogen Evolution
D-34: Molybdenum Borocarbide (Mo2BC) as a New Electrocatalyst for Hydrogen Evolution Reaction
D-35: Study on the Gasification Reactivity of Hypercoal Coke
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E-29: Development of Heat Dissipation Housing for Sensing Device through Material Development and Prediction of Heat Dissipation Phenomenon
E-30: Influence of Atmosphere and Temperature on PAH Emission from Green Anode Paste
E-32: Microstructure and Mechanical Properties of Al-Cu-Ca Based Alloys with Sn Addition
E-33: Newly Developed Ceramic Foam Filters for Filtration and Hydrogen Removal in Aluminum Casthouses
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F-36: Development of Austenitic Stainless Steel with TWIP Effect
F-37: Effect of Modifiers on Charge Dissipation and Properties of Electrosprayed Melting Gels
F-40: Enhancing Mechanical Properties of Molybdenum with Equal Channel Angular Extrusion Processing
F-41: From Long-term Aging to Rapid Annealing – The Heat Treatment Optimization of Melt-spun Fe81Ni4Cu1B14 Alloy. Crystal Structure and Magnetic Properties Evolution
F-43: X-ray Decomposition of PET Nanoparticles as an Alternative Process to Decontaminate Water Resources
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H-30: Evidence for Nanoindentation Induced Dynamical Recovery in Aluminum
H-31: Evolution of Microstructure and Crystallographic Texture of Ni-Mn-Ga Melt-spun Ribbons Exhibiting 1.15% Magnetic Field-induced Strain
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J-51: Laser Metal Deposition (LMD) and High-speed Laser Cladding – Perspectives for Brake Discs
J-52: Towards a Magnetic Field Induced Strain in Additive Manufactured NiMnGa Shape Memory Alloys
J-53: Uncovering the Deformation Pathways of an AM Ti Alloy with Engineered Duplex Microstructure
J-9: Influence of Process Parameters on Defect Formation for AA 6061 via Laser Powder Bed Fusion Additive Manufacturing
K-16: DFT Screening of Exciton Delocalization and Coupling Properties of Dyes for Aggregate Systems
K-17: Electrochemical Thyroxine Detection Using Copper Metal Organic Framework and Polyaniline Composite
K-18: Stretchable-ion Responsive Hydrogel and Its Rheology
L-51: An Innovative Mass Spectrometer Simplifies Elemental Characterization of Metals
L-52: Application of HRTEM and LTEM for Investigations of Microstructure and Magnetic Domain Structure of Nanocrystalline Fe Based Soft Magnetic Materials after Ultra-rapid Annealing Process
L-53: Computer Vision for Microvia Characterization
L-54: Correlative Microscopy and Applied Statistics – Development of a Simultaneous Electron Diffraction and Energy Dispersive X-ray Spectroscopy Data Analysis Method to Understand Interface Populations
L-55: Digital Image Processing for the Analysis of Spray Coated Porous Films
L-56: High Resolution STEM and LM STEM DPC Studies of Ni-Mn-Ga Based Precursor Powders and 3D Printed Magnetic Shape Memory Alloys
L-57: Enhancement of Electrical, Thermal and Mechanical Properties of Epoxy-carbon Nanotube/Egg Shell Ash Particles Nanocomposites
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L-60: Study of the Martensitic Transformation by Deformation of Traction in the Steels AISI 304 through Electrical Resistivity
L-61: Thermogravimetric and FTIR Analysis of Amazonian Oils
L-62: X-ray Tomography In-situ Mechanical Testing
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M-26: Combined Experimental and DFT Computational Study of NiTiZrCu High Temperature Shape Memory Alloy
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N-41: Effect of the Surface Roughness of Tungsten on the Sputtering Yield Under Helium Irradiation: A Molecular Dynamics Study
N-42: Fabrication and Phase Analysis of U3Si2 and UB2 Fuel Composites with Al and Al2O3 Strengthening Additions
N-43: Nanoindentation Creep Testing on Austenitic Alloys
N-44: Oxidation and Microstructural Characterization of Tristructural Isotropic Particles (TRISO) in High Temperature Mixed Gas Atmospheres
N-46: ZrO2 Corrosion Layers and Their Grain Boundary Networks
NOW ON-DEMAND ONLY - A-26: Microstructural Analysis of the Casting Defects in the Low Pressure Turbine Blades
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NOW ON-DEMAND ONLY - H-28: Carbon Nanotubes Reinforced WC-Co Hard Alloys
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O-41: Fe-rich Metastable Multi-principal Element Alloys
O-43: Microstructural Evolution during Deformation of 1 GPa Ultrahigh Strength-high Ductility Combination Austenitic Low Density Steel
O-44: The Design Strategy and Creep Properties of Cr-free Model NiCo-based Superalloys
O-45: The Validity of Using the Hollomon-Jaffe Parameter to Predict Hardness of Tempered Low-carbon High-performance Stainless-steel Alloys for Nuclear Applications
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Ultrasonically-induced Microstructural Refinement during Casting of an Al-Si-Mg Alloy
Wire Process Development of Laser-assisted DED of Haynes 282 Ni-based Superalloy

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