2024
DOI: 10.3390/mi15020170
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Understanding Melt Pool Behavior of 316L Stainless Steel in Laser Powder Bed Fusion Additive Manufacturing

Zilong Zhang,
Tianyu Zhang,
Can Sun
et al.

Abstract: In the laser powder bed fusion additive manufacturing process, the quality of fabrications is intricately tied to the laser–matter interaction, specifically the formation of the melt pool. This study experimentally examined the intricacies of melt pool characteristics and surface topography across diverse laser powers and speeds via single-track laser scanning on a bare plate and powder bed for 316L stainless steel. The results reveal that the presence of a powder layer amplifies melt pool instability and wors… Show more

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Cited by 6 publications
(1 citation statement)
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“…Referring to experiments performed on the Inconel 718 ratio, this low value indicates that the process is on the edge of transitioning from conductive mode to keyhole [39,40]. For 316 L, Zhang et al measured a similar ratio when the scan speed was 870 mm/s but with slightly higher laser power, i.e., 260 W, and a 50 µm layer thickness [41]. The conclusion is that the specimen C2 parameters-235 W and 920 mm/s-are very close to the process window's upper edge.…”
Section: Optical Tomography Values and Process Windowmentioning
confidence: 97%
“…Referring to experiments performed on the Inconel 718 ratio, this low value indicates that the process is on the edge of transitioning from conductive mode to keyhole [39,40]. For 316 L, Zhang et al measured a similar ratio when the scan speed was 870 mm/s but with slightly higher laser power, i.e., 260 W, and a 50 µm layer thickness [41]. The conclusion is that the specimen C2 parameters-235 W and 920 mm/s-are very close to the process window's upper edge.…”
Section: Optical Tomography Values and Process Windowmentioning
confidence: 97%