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  4. Surface Features of As-built Metal Additive AlSi7Mg0.6
 
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March 2023
Paper (Preprint, Research Paper, Review Paper, White Paper, etc.)
Title

Surface Features of As-built Metal Additive AlSi7Mg0.6

Title Supplement
Published on Preprints.org
Abstract
Additive manufacturing (AM) technologies show potential for the development of functionally integrated lightweight designs, biomimetic structures and material savings. Typically, as-built surfaces show powder particle agglomerations and re-entrant features, leading to rough surfaces, which are associated with poor fatigue performance. To benefit from the full range of advantages with special focus on aerospace applications, critical features for crack initiation when subjected to fatigue loading need to be identified and mitigated. A first step toward achieving this goal is the surface texture characterisation based on the quantification of surface features. In this paper, selected areal height, functional and feature parameters from ISO 25178-2:2022 are generated and process-specific features are examined for as-built AlSi7Mg0.6 from laser powder bed fusion (PBF-LB). A connection with the particle size distribution of the used powder is demonstrated. It is shown that surface feature analysis opens up opportunities to use physically meaningful surface characteristics in future quality assurance and part qualification processes.
Author(s)
Buchenau, Theresa  
Fraunhofer-Institut für Fertigungstechnik und Angewandte Materialforschung IFAM  
Thompson, Adam
sl-0
Brüning, Hauke  
Fraunhofer-Institut für Fertigungstechnik und Angewandte Materialforschung IFAM  
Amkreutz, Marc  
Fraunhofer-Institut für Fertigungstechnik und Angewandte Materialforschung IFAM  
Mayer, Bernd  
Fraunhofer-Institut für Fertigungstechnik und Angewandte Materialforschung IFAM  
Piano, Samanta
sl-0
Open Access
DOI
10.20944/preprints202303.0174.v2
Language
English
Fraunhofer-Institut für Fertigungstechnik und Angewandte Materialforschung IFAM  
Keyword(s)
  • Additive Manufacturing

  • Laser Powder Bed Fusion PBF-LB

  • Areal Surface Texture

  • Surface Features

  • Optical Surface Texture Measurement

  • AlSi7Mg0.6

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