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INFLUENCE OF HOT ISOSTATIC PRESSING AND SURFACE FINISH ON THE MECHANICAL BEHAVIOUR OF TI6AL4V PROCESSED BY ELECTRON BEAM MELTING
  • Stefania Franchitti,
  • Carmine Pirozzi,
  • Rosario Borrelli
Stefania Franchitti
Italian Aerospace Research Centre
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Carmine Pirozzi
Italian Aerospace Research Centre
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Rosario Borrelli
Italian Aerospace Research Centre
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Abstract

Electron Beam Melting (EBM) is one of a few additive manufacturing technologies capable of making full-density functional metallic parts realized from raw materials in the form of powders. The ability of direct fabrications of metallic parts can accelerate product designs and developments in a wide range of metallic-part applications, especially for complex components, which are difficult to make by conventional manufacturing means. To capitalize on these benefits, it must be shown that the mechanical performances of parts produced by EBM can meet design requirements. In this research an intensive mechanical characterization aimed at determining static and fatigue performance of the alloy Ti6Al4V processed by EBM has been performed. The effect of both postprocessing treatments (HIP and surface finish) on the mechanical behavior was evaluated by mechanical testing, microstructural study, computed tomography analysis and fracture surface investigation.

Peer review status:ACCEPTED

07 Apr 2020Submitted to Fatigue & Fracture of Engineering Materials & Structures
07 Apr 2020Submission Checks Completed
07 Apr 2020Assigned to Editor
09 Apr 2020Reviewer(s) Assigned
20 Apr 2020Review(s) Completed, Editorial Evaluation Pending
03 May 2020Editorial Decision: Revise Major
17 Jun 20201st Revision Received
18 Jun 2020Submission Checks Completed
18 Jun 2020Assigned to Editor
18 Jun 2020Reviewer(s) Assigned
19 Jun 2020Review(s) Completed, Editorial Evaluation Pending
22 Jun 2020Editorial Decision: Accept