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Meeting Materials Science & Technology 2020
Symposium Additive Manufacturing: Qualification and Certification
Presentation Title Recyclability of Ti-6Al-4V Powders Used in Additive Manufacturing
Author(s) Nicholas A. Derimow, Nikolas Hrabe
On-Site Speaker (Planned) Nicholas A. Derimow
Abstract Scope Titanium alloys are widely used in industry for their high strength-to-weight ratios and good corrosion resistance. However, titanium’s affinity for oxidation leads to costly processing environments to maintain purity of the finished product. The lifetime of a Ti-6Al-4V powder batch is determined by how many times it can be recycled across builds, as oxygen pickup will increase to a level that is no longer acceptable and will need to be discarded. The source of oxygen is often assumed to be water vapor trapped in the powder during exposure to atmosphere during powder handling outside the AM machine. However, other potential sources of oxygen have not been investigated despite the potential to have an equivalent magnitude effect. This example knowledge gap, and others presented in this talk, will demonstrate significant opportunity to further optimize this process to achieve increased powder batch lifetime and reduce overall process cost.
Proceedings Inclusion? Undecided

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A Comprehensive Digital Platform for Additive Manufacturing
A Multi-Sensor Comparative Study for Fatigue Prognosis of Additively Manufactured Metallic Specimens
Connecting Metal Powder Morphological Characteristics with Flowability Properties Using Machine Learning
CT Based Analysis of Generation and Characterization of Parameter- and Process-induced Defects in Powder Bed Fusion Additive Manufacturing
Effect of Sample Geometry and Orientation on Tensile Properties of Ti-6Al-4V Manufactured by Electron Beam Melting
Ensuring Build Quality thru Physics-based Support Design Optimization for Residual Stress
Influence of Printing Parameters within the Binder-powder Interaction
Introductory Comments: Additive Manufacturing: Qualification and Certification
Physics-based Qualification for Laser Powder Bed Fusion AM
Pore Formation in Laser Powder Bed Fusion Inconel 718 through Multiphysics Modeling
Post-build Heat Treatment of Wire-arc Additive Manufactured 410 SS for Hardness Tuning
Recyclability of Ti-6Al-4V Powders Used in Additive Manufacturing
Reducing Anisotropic Deformation of LPBF Inconel 718 for Applications in Extreme Conditions
Reducing Heat Buildup and Regularizing Melt Pool Dimensions in Laser Powder Bed Fusion through a “Powder Moat” Scan Strategy
Similarity Analysis and Clustering of Thermal History to Understand Process-structure Relationships
Simulation of the Effect of Texture on Anisotropy in SLM-Produced IN718 Microstructures
The Effects of Powder Particle Size Distribution on the Powder and Part Performance of Laser Powder Bed Fusion 17-4 PH Stainless Steel
Unveiling the Relationships between Powder Bed Conditions and Materials Quality during Selective Laser Melting

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