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Meeting Materials Science & Technology 2020
Symposium Additive Manufacturing of Metals: Complex Microstructures and Architecture Design
Presentation Title Modeling of Grain Growth in Metal Printing
Author(s) Tarasankar DebRoy, Tuhin Mukherjee
On-Site Speaker (Planned) Tarasankar DebRoy
Abstract Scope Prediction of grain growth and solidification morphology is important since they affect the mechanical properties of printed metal parts. Here we combine a well-tested 3D heat transfer and fluid flow model with a Monte Carlo method based grain growth model to predict three-dimensional grain structure, texture, columnar to equiaxed transition, and solid-state grain growth during directed energy deposition of nickel alloys. The effects of multiple thermal cycles during the deposition process on the solid-state grain growth are examined through modeling. We explain the origin of spatial non-uniformity of microstructure based on the transient temperature field and molten pool geometry. We also show how modeling can help to predict appropriate processing conditions to achieve customized texture and columnar to equiaxed transition to prevent solidification cracking.


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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