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Meeting Materials Science & Technology 2020
Symposium Additive Manufacturing of Metals: Complex Microstructures and Architecture Design
Presentation Title The Structure of Cellular Features in Additively Manufactured 316L
Author(s) Richard W. Fonda, Joseph Aroh, Jerry Feng, David Rowenhorst
On-Site Speaker (Planned) Richard W. Fonda
Abstract Scope Additive manufacturing of 316L stainless steel by laser powder bed fusion produces a fine cellular structure within the grains. These cellular structures have been associated with enhancements in the as-built properties, but their origins and characteristics are not well understood. The cells exhibit a variety of morphologies and orientations on a polished 2D surface; cells range in aspect ratio from equiaxed to very elongated and often exhibit multiple cell orientation domains within a single grain. We have systematically characterized these cellular features to reveal their three-dimensional crystallography and orientation. We will discuss the characteristics of these cellular structures and how they relate to the local crystallography, local crystal growth direction, thermal gradient, and overall build direction.

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

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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