Sebastian Bluemer on Euro PM2019: Performance and Quality Parameter and Their Effect on L-PBF Manufactured High Carbon Steel Structures Using Water Atomized Powders

Additive Manufacturing Technologies (AM) e.g. Laser Powder Bed Fusion (L-PBF) have the potential to change todays production strategy. Implementing L-PBF technology in an industrial environment requires a strong understanding of machine parameters and material behavior to ensure sufficient process robustness, productivity rate and part quality. An increase of productivity rate as well as process robustness can be achieved by modifying L-PBF process parameter considering subsequent field of applications (e.g. non-critical parts). Manufacturing of critical parts with increased productivity rate requires additional density measurement, pore analysis and mechanical test procedures. In this work, water atomized high carbon steel alloy powders (Ancor AM 4630, Ancor AM 4660) are used to manufacture specimens with different process parameters on a L-PBF-system. Relative density based on cross sections as well as porosity distributions were characterized using optical measurement and pore analyzing methods. A comparison between L-PBF produced Ancor AM 4630, Ancor AM 4660 alloys and PM produced specimen (basis Ancor AM 4630 powder) was performed based on the achieved mechanical properties and pore distributions.

Session 9

Properties of AM Materials – Steels

Monday 14. October