Abstract
Hybrid manufacturing involves both additive and subtractive (machining) processes to achieve the final product. Substantial differences can exist between the mechanical behavior of additively as-built materials compared to their wrought counterparts. As such, the use of wrought material properties for the simulation and optimization of the machining step in a hybrid manufacturing process may produce inaccurate results. The present work uses the NIST pulse-heated compression Kolsky bar to measure the dynamic behavior of both wrought and additively produced Inconel 625 and 17-4 PH stainless steel over a range of temperatures up to 1000 °C and at strain rates of 3000 s−1. The measurement results are correlated to underlying microstructural differences between additive and wrought materials that arise because of the differences between these material processing routes as described in the literature.
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Lyle Levine, NIST, private communication
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© 2019 The Society for Experimental Mechanics, Inc.
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Mates, S., Stoudt, M., Jacob, G., Moscoso, W., Madhavan, V. (2019). Dynamic Thermal Softening Behavior of Additive Materials for Hybrid Manufacturing. In: Kramer, S., Jordan, J., Jin, H., Carroll, J., Beese, A. (eds) Mechanics of Additive and Advanced Manufacturing, Volume 8. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, Cham. https://doi.org/10.1007/978-3-319-95083-9_7
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DOI: https://doi.org/10.1007/978-3-319-95083-9_7
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