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Meeting Materials Science & Technology 2019
Symposium Additive Manufacturing: Effective Production, Characterization, and Recycling of Powder Materials
Presentation Title Characterization of Nickel-base Superalloy MAR-M247 Powders by Synchrotron X-ray Computed Tomography
Author(s) Lianghua Xiong, Andrew Chuang, Peter Kenesei, Jonathan Almer, Dileep Singh
On-Site Speaker (Planned) Lianghua Xiong
Abstract Scope Metallic powder feedstocks play the important role in the powder bed fusion based additive manufacturing (AM) processes in order to three-dimensionally build defect-free structures with complex and customized geometries. During the layer-by-layer powder spreading and printing processes, the quality of metallic powder feedstocks significantly determine the qualities of powder bed and further formed melt track. Conventional characterization tools, like optical and scanning electron microscopies, have the limitations to observe the external and internal structures of powder feedstocks simultaneously. Here, we apply three-dimensional synchrotron x-ray computed tomography to characterize the external and internal microstructure of nickel-base super alloy MAR-M247 powders for AM application. The particle size, shape and distribution of powder feedstocks produced by different methods are quantified. Size, shape, distribution of internal defects are characterized at the same time. The results obtained will benefit printing reliable, repeatable and defect-free components in powder bed fusion process. This work was sponsored by Advanced Manufacturing Office of the U. S. Department of Energy (DOE) under Contract No. DE-AC02-06CH11357. This research used resources of the Advanced Photon Source, a DOE Office of Science User Facility operated by Argonne National Laboratory under Contract No. DE-AC02-06CH11357.
Proceedings Inclusion? Planned: At-meeting proceedings

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Additive Manufacturing Alloys: Influence of Powder Preparation Method in Aluminum Matrix Composites
Assessment of 316L Stainless Steel Powder Produced from Recycled Machining Chips for Closed Lifecycle Additive-Subtractive Manufacturing
Characterization of Gas Atomized Aluminum Alloy Powder for Additive Manufacturing Applications
Characterization of Nickel-base Superalloy MAR-M247 Powders by Synchrotron X-ray Computed Tomography
Characterization of Titanium Powder Produced from Battlefield Scrap for Additive Manufacturing
Determination of Viscosity of Metal Melts by High Temperature Rheometry
Effects of Recycling PREP and Plasma Atomized Ti-6Al-4V Powder from LENS Process
Exploring the Feasibility of Cryomilled Aluminum Alloy 5083 as Feed Stock Material for Additive Manufacturing
Hydrogen Assisted Magnesiothermic Reduction (HAMR) for Making Low-oxygen Ti Powder
Metal Particulate Produced by Modulation-assisted Machining
P3-26: Identifying Correlations between Metal Powder Properties and Binder Jet Print Settings to Optimize Process
Potentials and Risks in Hybrid Manufacturing
Powder Specification Needs for Steels in the LPBF Process
Surface Area as a Powder Morphology Probe
Synchrotron X-ray CT of AM Feedstock Metal Powder: A Validation of Metallographic Porosity Measurements.
Understanding Powder Morphology and Its Effect on Flowability through Computer Vision and Machine Learning In Additive Manufacturing
Understanding Surface Area Measurement for Improved Powder Characterization

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