About this Abstract |
Meeting |
2021 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2021)
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Symposium
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Materials
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Presentation Title |
Microhardness and Mechanical Properties in Additively Manufactured Inconel 718 |
Author(s) |
Cherish Lesko, Luke Sheridan, Joy Gockel |
On-Site Speaker (Planned) |
Cherish Lesko |
Abstract Scope |
Mechanical properties can be linked to various material features including porosity, surface roughness, defects, microstructure and precipitation of undesirable phases which are demonstratively different between additively manufactured (AM) and wrought alloys. Vicker’s Hardness (HV) testing can be correlated with various mechanical properties. In this work, the relationship between HV and process parameters is explored for nickel-based superalloy 718 (IN 718). The HV observations were made across a large design space of process parameters and relationships are determined using fundamental design of experiments (DOE) methods. Additionally, HV measurements were taken spatially across the samples and compared to determine within sample variation. Materials characterization methods were used to observe microstructure changes for correlation with HV data and the relationship of HV to mechanical properties is discussed. The results from this work can be used to guide the optimization of process parameters for improved mechanical properties in AM. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |