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Meeting MS&T23: Materials Science & Technology
Symposium Metal Powder Synthesis and Processing: Fundamental Aspects and Modeling
Presentation Title Flowability and Suitability of Mechanically Derived Powders for Additive Manufacturing
Author(s) David F. Bahr, John E. Barnes, John Hunter Martin
On-Site Speaker (Planned) David F. Bahr
Abstract Scope Metal additive manufacturing (AM) provides the opportunity of “on demand” customizable fabrication to minimize supply chain constraints. However, powder availability could become a similar constraint, and creating affordable regional sources for low-embodied energy powders will be a crucial step in distributed manufacturing. A powder creation method using cold mechanically derived (CMD) of particulates can create a wide range of alloy compositions with approximately 90% less embodied energy than gas atomization (GA). We will demonstrate the morphology and flowability of Al 7075 and Copper 14500 powders made via GA and MF are similar at rates appropriate for powder bed additive methods. Particle morphology descriptions (size and shape) do not strongly correlate to tap density in this case. Laser powder bed fusion tensile specimens were formed from AL 7075 and heat treated to T6; the GA and CMD powders showed equivalent performance to both each other and conventionally wrought 7075.


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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