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Meeting MS&T23: Materials Science & Technology
Symposium Metal Powder Synthesis and Processing: Fundamental Aspects and Modeling
Presentation Title Advanced Characterization of Defects in Superalloy Powders Atomized by Various Methods and Effects on Net-shape HIP Product
Author(s) Benjamin Georgin, Hamish Fraser, Brian Welk
On-Site Speaker (Planned) Benjamin Georgin
Abstract Scope The performance of additively manufactured product is directly related to the quality and purity of the input powder stock. This is especially true for superalloys, which are frequently used in critical applications where human and environmental safety are considered. In this talk, state-of-the-art electron microscopy techniques are used to characterize surface defects, non-equilibrium phases, non-metallic inclusions, and grain structures in rapidly solidified IN718 powder, produced using various atomization methods in argon, nitrogen, and helium atmospheres. Powders with varying size distributions were consolidated into net shape parts by hot isostatic pressing (HIP) and were evaluated across several length scales. HIP cycles were interrupted using an ultra-rapid quench (URQ) furnace to better understand the mechanisms of densification and evolution of microstructure during consolidation.


Advanced Characterization of Defects in Superalloy Powders Atomized by Various Methods and Effects on Net-shape HIP Product
Effect of Li Concentration on Morphology of Precipitates in Nanocrystalline Cu-3Ta
FEM Analysis of Temperature and Stress Distribution Behavior of Al20Cr20Fe25Ni25Mn10 High Entropy Alloy in Spark Plasma Sintering: Effect of Consolidation Time on Microstructure
Flowability and Suitability of Mechanically Derived Powders for Additive Manufacturing
Microstructural Characterization of Zn-3Mg(wt.%) Processed by High-pressure Torsion
Microstructure Alignment Effects from Engineered Cooling during Additive Manufacturing of Alnico Magnets from Pre-alloyed Powder
Resolving the Sintering Conundrum of Tungsten Alloys
Understanding the Geometry Accuracy and Surface Roughness of Thin Wall Structures for 316L Stainless Steel in Laser Powder Bed Fusion Additive Manufacturing
Vacuum Hot Pressing of Oxide-dispersion Strengthened (ODS) Ferritic Steel Powders Guided by Temperature-scanning High-energy X-ray Powder Diffraction Analysis

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