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NASA NTRS · 20220008611

M2 Selective Laser Melting GRCop-42 Recycling Study

Baxter Barnes·Richard Boothe·Paul Schrader·James Morgan·Travis Palm·Mallory James·Brian West
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Abstract

A powder recycling study was conducted to examine the effects of powder reuse on physical and mechanical properties of SLM GRCop-42. Twelve sequential builds were conducted, each reusing powder from the previous build topped off with virgin powder to fill the powder chamber. Powder morphology, particle size distribution, flowability, and chemistry were examined for each subsequent build, along with the mechanical properties of tensile and LCF specimens built with each powder batch. It was found that only powder flowability demonstrated a trend with increasing reuse, with flowability and cohesiveness generally decreasing over the course of the 12 builds. Minor variation in powder chemistry was observed throughout the study, however, the variations did not correlate with increasing powder reuse

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Additive ManufacturingGRCop-42Laser Powder Bed FusionSelective Laser MeltSLMTensileRecycled PowderLCFPowder Morphology

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Baxter Barnes, Richard Boothe, Paul Schrader, James Morgan, Travis Palm, Mallory James, Brian West. 2022-06-09. M2 Selective Laser Melting GRCop-42 Recycling Study. https://ntrs.nasa.gov/citations/20220008611

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