Porosity analysis of L-PBF manufactured AZ91D components
Lennart Grüger, Joanna Szyndler, Felix Jensch, Sebastian Härtel
Abstract. Several materials for joint replacement parts approved in medical technology are being investigated. Magnesium alloys are very suitable for implants due to the similar strength properties between magnesium alloys and human bone. Therefore, the present work aims to examine the parameters for producing the magnesium alloy AZ91D. For this purpose, 16 samples were manufactured with varying laser power and exposure speed and examined using µCT analyses. As a result, densities between 99.56 and 95.21 percent were achieved. The samples with the lowest density were subjected to a HIP process to increase the relative density. However, a further µCT analysis revealed only minor positive effects of the HIP process. An analysis of the number and size of the pores indicates that the pores bonded together instead of being closed.
Keywords
AZ91D, Additive Manufacturing, L-PBF, HIP, Process Parameter Analysis
Published online 5/7/2025, 10 pages
Copyright © 2025 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA
Citation: Lennart Grüger, Joanna Szyndler, Felix Jensch, Sebastian Härtel, Porosity analysis of L-PBF manufactured AZ91D components, Materials Research Proceedings, Vol. 54, pp 199-208, 2025
DOI: https://doi.org/10.21741/9781644903599-22
The article was published as article 22 of the book Material Forming
Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
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