Speaker
Robert Steinlechner
(TU Wien)
Description
Additive manufacturing of heat treatable low alloy steels by
Laser beam powder bed fusion (LB-PBF) offers a number of difficulties,
which is the reason why their use in commercial AM is rather limited
today. In the present study, processing of several AISI 4xxx type steels
(Cr-Mn-Mo alloyed) has been studied, and the processing windows have
been defined for 2 different machines, with particular focus on the
laser power. Furthermore, typical defects occurring when processing is
done outside the optimal windows were investigated by metallographic
studies.
Author
Robert Steinlechner
(TU Wien)
Co-authors
William Hearn
(Chalmers University of Technology)
Eduard Hryha
(Chalmers University of Technology/Centre for Additive Manufacturing - Metal (CAM2))