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Smoothing additive manufactured parts using ns-pulsed laser radiation

 
: Kuisat, Florian; Lasagni, Fernando A.; Lasagni, Andrés-Fabián

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Fulltext ()

Progress in additive manufacturing 6 (2021), No.2, pp.297-306
ISSN: 2363-9512 (Print)
ISSN: 2363-9520 (Online)
Bundesministerium für Bildung und Forschung BMBF (Deutschland)
02P18E010-02P18E012; PTKA
English
Journal Article, Electronic Publication
Fraunhofer IWS ()
Ti64; additive manufacturing components; direct laser smoothing; nanosecond-pulsed laser source; Scalmalloy; surface modification

Abstract
It is well known that the surface topography of a part can affect its mechanical performance, which is typical in additive manufacturing. In this context, we report about the surface modification of additive manufactured components made of Titanium 64 (Ti64) and Scalmalloy®, using a pulsed laser, with the aim of reducing their surface roughness. In our experiments, a nanosecond-pulsed infrared laser source with variable pulse durations between 8 and 200 ns was applied. The impact of varying a large number of parameters on the surface quality of the smoothed areas was investigated. The results demonstrated a reduction of surface roughness Sa by more than 80% for Titanium 64 and by 65% for Scalmalloy® samples. This allows to extend the applicability of additive manufactured components beyond the current state of the art and break new ground for the application in various industrial applications such as in aerospace.

: http://publica.fraunhofer.de/documents/N-633301.html