Experimental analysis of spatter generation and melt-pool behavior during the powder bed laser beam melting process
dc.contributor.author | GUNENTHIRAM, V |
dc.contributor.author | PEYRE, Patrice |
dc.contributor.author | SCHNEIDER, Matthieu |
dc.contributor.author | COSTE, Frédéric |
dc.contributor.author | FABBRO, Rémy |
dc.contributor.author
hal.structure.identifier | DAL, Morgan
|
dc.contributor.author | KOUTIRI, Imade |
dc.date.accessioned | 2018 |
dc.date.available | 2018 |
dc.date.issued | 2018 |
dc.date.submitted | 2018 |
dc.identifier.issn | 0924-0136 |
dc.identifier.uri | http://hdl.handle.net/10985/13281 |
dc.description.abstract | The experimental analysis of spatter formation was carried out on an instrumented SLM set-up allowing the quantification of spatter ejections and possible correlation with melt-pool behavior. Considering nearly similar SLM conditions than those carried out on SLM machines, an increase of large spatters (>80 μm) with volume energy density (VED) was clearly demonstrated on a 316L stainless steel, which was attributed to the recoil pressure applied on the melt-pool by the metal vaporization and the resulting high velocity vapor plume. In a second step, much lower spattering was shown on Al-12Si powder beds than on 316L ones. Fast camera analysis of powder beds indicated that droplet formation was mostly initiated in the powder-bed near the melt-pool interface. On Al-12 Si alloys, such droplets were directly incorporated in the MP without being ejected upwards as spatters like on 316L. Last, it was shown that a strong reduction of spattering was possible even on 316L, with the use of low VED combined with larger spots (≈0.5 mm), allowing to melt sufficiently deep layers in conduction regime and ensure adequate dilution between layers. |
dc.language.iso | en |
dc.publisher | Elsevier |
dc.rights | Post-print |
dc.subject | Laser |
dc.subject | Powder bed |
dc.subject | Additive manufacturing |
dc.subject | Spatters |
dc.subject | Key-hole |
dc.title | Experimental analysis of spatter generation and melt-pool behavior during the powder bed laser beam melting process |
ensam.embargo.terms | 2018-07-01 |
dc.identifier.doi | 10.1016/j.jmatprotec.2017.08.012 |
dc.typdoc | Article dans une revue sans comité de lecture |
dc.localisation | Centre de Paris |
dc.subject.hal | Sciences de l'ingénieur: Matériaux |
dc.subject.hal | Sciences de l'ingénieur: Mécanique |
ensam.audience | Internationale |
ensam.page | 376-386 |
ensam.journal | Journal of Materials Processing Technology |
ensam.volume | 251 |
ensam.peerReviewing | Oui |
hal.identifier | hal-01825515 |
hal.version | 1 |
hal.submission.permitted | updateFiles |
hal.status | accept |