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Journal of Materials Engineering and Performance
Erschienen in: Journal of Materials Engineering and Performance 5/2019

17.04.2019

Experimental Study on the Porosity of Electron Beam Melting-Manufactured Ti6Al4V

verfasst von: Carmine Pirozzi, Stefania Franchitti, Rosario Borrelli, Gianluca Diodati, Giorgio Vattasso

Erschienen in: Journal of Materials Engineering and Performance | Ausgabe 5/2019

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Abstract

Electron beam melting (EBM) is one of the powder bed fusion technologies, which utilizes a high-energy electron beam, as a moving heat source, in order to melt (by rapid self-cooling) metal powder and produce parts in a layer-building fashion. Anyway, many technical aspects concerning the quality of EBM-produced components are still industrial open items and studies need to be carried out. In accordance with the industrial needs, in this work researchers have studied the influence of two process parameters, i.e., samples orientation and height in the build chamber. The experiments have consisted in rectangular parallelepiped (50 × 10 × 10 mm) samples Ti6Al4V produced by EBM following a two-factor DOE. A tomographic investigation of all the samples produced by EBM has been carried out in order to get a complete set of data on porosity defects that have been analyzed showing the influence of process parameters on the porosity generation and pointing out typical features of defect distributions. The results obtained from this work have given precious information to designers and EBM technologists in order to:
  • optimize the components’ design and the building setup obtaining a manufacturing process with the minimal level of porosity defects (best growth orientation).
  • provide information for mechanical post-processing (metal removal).
Vorheriger Artikel Microstructure and Properties of Mn-Cu-Based Damping Alloys Prepared by Ball Milling and Hot-Press Sintering
Nächster Artikel Effects of Laser Fluence on Microstructure and Bonding Characteristics of Wideband Laser-Deposited Nickel Composite Coatings

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Metadaten
Titel
Experimental Study on the Porosity of Electron Beam Melting-Manufactured Ti6Al4V
verfasst von
Carmine Pirozzi
Stefania Franchitti
Rosario Borrelli
Gianluca Diodati
Giorgio Vattasso
Publikationsdatum
17.04.2019
Verlag
Springer US
Erschienen in
Journal of Materials Engineering and Performance / Ausgabe 5/2019
Print ISSN: 1059-9495
Elektronische ISSN: 1544-1024
DOI
https://doi.org/10.1007/s11665-019-04038-7

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