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- W4281629042 abstract "Process parameter selection in laser powder bed fusion (LPBF) controls the as-printed dimensional tolerances, pore formation, surface quality and microstructure of printed metallic structures. Measuring the stochastic mechanical performance for a wide range of process parameters is cumbersome both in time and cost. In this study, we overcome these hurdles by using high-throughput tensile (HTT) testing of over 250 dogbone samples to examine process-driven performance of strut-like small features, ~1 mm2 in austenitic stainless steel (316 L). The output mechanical properties, porosity, surface roughness and dimensional accuracy were mapped across the printable range of laser powers and scan speeds using a continuous wave laser LPBF machine. Tradeoffs between ductility and strength are shown across the process space and their implications are discussed. While volumetric energy density deposited onto a substrate to create a melt-pool can be a useful metric for determining bulk properties, it was not found to directly correlate with output small feature performance." @default.
- W4281629042 created "2022-06-13" @default.
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- W4281629042 date "2022-08-01" @default.
- W4281629042 modified "2023-10-16" @default.
- W4281629042 title "Optimization of stochastic feature properties in laser powder bed fusion" @default.
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- W4281629042 doi "https://doi.org/10.1016/j.addma.2022.102943" @default.
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