|About this Abstract
||2023 TMS Annual Meeting & Exhibition
||Quantifying Microstructure Heterogeneity for Qualification of Additively Manufactured Materials
||Microstructural and Mechanical Validation of Thin-walled Additively Manufactured Inconel 625
||Connor Varney , Paul Rottmann
|On-Site Speaker (Planned)
Additive manufacturing (AM) holds tremendous promise for significantly reducing the cost to manufacture parts with complex geometries, however, realizing this promise requires development of robust process-structure-property models leaning on knowledge of individual alloys, printing techniques, and process parameters. Thin wall specimens will be fabricated with variable thickness and characterized both in the as-printed condition and after standard post-print heat treatments including HIP. This research will focus on characterizing the as-built microstructure of thin wall SLM IN625 (EDS, EBSD, XCT) to identify detrimental phases (carbides/nitrides, large dendrites), elemental segregation, and porosity that limit its mechanical reliability and the degree to which they persist after standard industry heat. These results will provide the foundation for microstructure-informed, mechanistic interpretations of the mechanical properties obtained using a custom micro-mechanical testing setup and accompanying digital image correlation system. All told, this will allow for a greater understanding of the process-properties-performance relationship of AM IN625.
||Additive Manufacturing, Characterization, Mechanical Properties