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Meeting Materials Science & Technology 2020
Symposium Additive Manufacturing of Metals: Complex Microstructures and Architecture Design
Presentation Title Control of Nanoscale Lamellae in Bulk Al-Cu Eutectic Samples Through Laser Powder Bed Fusion
Author(s) Jonathan M. Skelton, James Fitz-Gerald, Jerrold Floro
On-Site Speaker (Planned) Jonathan M. Skelton
Abstract Scope Eutectic alloys processed through laser powder bed fusion (LPBF) have recently generated interest as a potential class of high strength materials due to the high density of interphase interfaces that are produced. In this research, the relationship between LPBF processing parameters and the resulting microstructure of bulk Al-Cu eutectic samples is investigated as a model system. Specifically, effects of the laser velocity and power on the microstructural features such as the interphase spacing, colony width, melt pool boundary thickness, and lamellae and colony orientation are analyzed and discussed. This research demonstrates that control of the interphase spacing and microstructural orientation of eutectic alloys may be achieved through careful selection of the laser velocity and scan direction, allowing for fine tunability within each line scan, and providing potential design freedoms of bulk properties within the built part. Support for this research from the National Science Foundation grant #CMMI-1663085 is gratefully acknowledged.


Additive Manufacturing of Pure Magnesium
Alloy and Process Modification for Microstructure Control in Additively Manufactured Alloys
Application of Photodiode Sensor for Contour Extraction of Part Features in the Laser Powder Bed Fusion Process
Control of Nanoscale Lamellae in Bulk Al-Cu Eutectic Samples Through Laser Powder Bed Fusion
Cracking in Additively Manufactured Refractory Metals
Engineering the Plasticity of SLM Steel via Crystallographic Texture Control
Evaluation of Microstructure in Multi Bead Ti-6Al-4V
Fabrication of High Temperature High Strength Austenitic Steels by Laser Powder-bed Fusion
Laser Powder Bed Fusion of Single-crystalline-like Stainless Steel 316L; From Samples to Parts
Microstructural Features and Mechanical Properties of a Newly Designed Steel Fabricated by Laser Powder Bed Fusion
Microstructure of Alloy 247LC Manufactured by Laser Powder Bed Fusion
Mitigating Stray Grain Nucleation during the Laser Powder Bed Fusion of Single Crystal CMSX-4
Modeling of Grain Growth in Metal Printing
Secondary Orientation Preference of Ni-based Superalloy Single Crystals Produced via Electron Beam Melting
Synchrotron X-ray Studies on Additive Manufacturing and Materials
The Structure of Cellular Features in Additively Manufactured 316L

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