Speakers
Description
Additive manufacturing (AM) processes allow the building of three-dimensional (3D) parts by progressively adding thin layers of materials guided by a digital model. AM processes are known for the complexity of the processing parameters which can greatly influence the materials properties such as porosity, residual stresses, microstructure and mechanical behavior.
Within the Neutron Imaging and Applied Materials (NIAG) group at the Paul Scherrer Institute, a synergy of multiscale characterization techniques is applied for studying components processed by AM. Neutron diffraction studies are undertaken at the instrument POLDI for residual stress characterization while the novel deformation rigs (uniaxial and multiaxial) are used for in-situ investigations of the deformation behavior of AM materials. The imaging beamlines ICON and NEUTRA and the novel “Neutron Microscope” installed on POLDI, ICON or BOA beamlines are employed for the characterization of the internal structures in length-scales ranging from about 10 μm to cm. Finally, diffraction contrast imaging on the BOA beamline is undertaken for mapping the phase, strain and texture distribution with high spatial resolution.
In this contribution reference cases and various characterization methods applied to different materials, produced by AM techniques will be showcased. Specific examples of characterization of the mechanical behaviour, porosity and strain/stress distribution with respect to the material, processing parameters and building methods will be presented.
| Position | Scientist |
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