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Experimental analysis of laser post-processing of additive manufactured metallic parts

Solheid, Juliana dos Santos; Seifert, Hans Jürgen; Pfleging, Wilhelm

This work focuses on laser-assisted surface finishing and modification of metallic parts produced by means of the selective laser melting (SLM) process. The combination of additive manufacturing (AM) and subsequent laser polishing is a technical approach with high flexibility in comparison to conventional processes. AM parts often present the need of post-processing due to surfaces with roughness higher than the admissible for most applications. The laser polishing process is based on ablation and melting of a small amount of surface material, through laser energy absorption. The affected surface material is redistributed in order to create a homogenous layer with reduced roughness and probably new functionalities. Besides the flexibility, laser polishing provides high processing speed and capability for localized surface treatment. In the presented study, post-processing is realized by different types of lasers in terms of pulse duration, continuous wave (cw), short (ns) and ultrafast (ps, fs) pulses. Ultrafast laser radiation induces almost no heat to the surrounding material during ablation, while nanosecond and especially contin ... mehr

Zugehörige Institution(en) am KIT Institut für Angewandte Materialien - Angewandte Werkstoffphysik (IAM-AWP)
Karlsruhe Nano Micro Facility (KNMF)
Publikationstyp Vortrag
Jahr 2018
Sprache Englisch
Identifikator URN: urn:nbn:de:swb:90-892907
KITopen-ID: 1000089290
HGF-Programm 49.01.09 (POF III, LK 02)
Veranstaltung Materials Science and Engineering (MSE 2018), Darmstadt, Deutschland, 26.09.2018 – 28.09.2018
Projektinformation PAM^2 (EU, H2020, 721383)
Bemerkung zur Veröffentlichung P02: Additive Manufacturing technologies and Materials

P02.3: Processes
Schlagworte Project-ID: 2017-018-019629 (KNMF-LMP), selective laser melting, surface modification, laser polishing
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