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Meeting MS&T21: Materials Science & Technology
Symposium Additive Manufacturing of Metals: ICME Gaps: Material Property and Validation Data to Support Certification
Presentation Title ICME Gaps for Additive Manufacturing of Metals
Author(s) Anthony D. Rollett
On-Site Speaker (Planned) Anthony D. Rollett
Abstract Scope Rapid advances in 3D printing of metals have enabled widespread used in industry. Key questions remain as to how to qualify printers and certify parts, especially in terms of defect structures. Under support from the NASA-ULI program, a multi-university team is determining process windows, characterizing microstructures and surface finish, and measuring fatigue resistance in 4-point bend fatigue. Preliminary results point to similar process windows for the same model at different locations when using a consistent source of Ti-6Al-4V powder. Microstructure and basic mechanical properties can be predicted from thermal history albeit heuristically. Transferring the methodology to an aluminum alloy in a different printer, however, required re-evaluation of melt pool sizes, which is basic to the proposed physics-based approach to qualification. Overall ICME needs include the need for computational tools that predict melt pool shape & size, melt pool stability, microstructure formation, including texture, diffusion, and solid state phase transformation.


An Analysis of the Dislocation Density of Inconel 718 Additive Manufacturing Powder
An ICME Approach for Designing Appropriate Heat Treatments in Additively Manufactured Nitrogen Atomized 17-4PH Stainless Steel
Capturing and Analyzing In-situ Data within the Directed Energy Deposition Process with DEDSmart
CFD Modelling for AM Processes
Critical Issues and Gaps in Testing and Characterization Data for Computational Materials in Qualification and Certification of Additively Manufactured Metallic Materials
Determining Data Requirements to Quantify Porosity in the Laser Powder Bed Fusion Process
Enabling Quality Assurance by Completing the Process-Property-Performance Paradigm for Additive Manufacturing
Experimental and Numerical Investigation of Pressureless Sintering for Binder Jetted Metal Parts
High Temperature Material Properties Measurement Capabilities of the NASA MSFC Electrostatic Levitation (ESL) Laboratory
High Temperature Material Property Data and Challenges to Thermal Process Model Predictions and In-Situ/Ex-Situ Measurements for Metallic Additive Manufacturing
ICME Gap Analysis for Materials Design and Process Optimization in Additive Manufacturing
ICME Gaps for Additive Manufacturing of Metals
Laser Energy Coupling during Metal Additive Manufacturing
Lessons Learned from Calibration and Validation of Process Models for Laser Powder Bed Fusion
Methods for Improved Part-scale Thermal Process Simulations in Laser Powder Bed Fusion
On Scan Path Knowledge for Model Informed Process Planning and Material Quality Predictions
Phase Field Informed Monte Carlo Texture Evolution Models for Additive Manufacturing Microstructure Simulation and the Need for Experimental Grain Competition Data
Predicting Melt Properties Using Atomistic Simulations with a Highly Accurate Physically Informed Neural Network Interatomic Potential
Providing a Rigorous Measurement Foundation for Modeling-Informed Qualification and Certification of Metal AM Components
Transferability of Terrestrial Development of Metal Additive to Extraterrestrial Applications

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