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An Assessment of Subsurface Residual Stress Analysis in SLM Ti-6Al-4V
- Ti-6Al-4V bridges were additively fabricated by selective laser melting (SLM) under different scanning speed conditions, to compare the effect of process energy density on the residual stress state. Subsurface lattice strain characterization was conducted by means of synchrotron diffraction in energy dispersive mode. High tensile strain gradients were found at the frontal surface for samples in an as-built condition. The geometry of the samples promotes increasing strains towards the pillar of the bridges. We observed that the higher the laser energy density during fabrication, the lower the lattice strains. A relief of lattice strains takes place after heat treatment.
| Author details: | Tatiana MishurovaORCiDGND, Sandra CabezaORCiD, Katia Artzt, Jan Haubrich, Manuela Klaus, Christoph Genzel, Guillermo RequenaGND, Giovanni BrunoORCiDGND |
|---|---|
| DOI: | https://doi.org/10.3390/ma10040348 |
| ISSN: | 1996-1944 |
| Title of parent work (English): | Materials |
| Publisher: | MDPI |
| Place of publishing: | Basel |
| Publication type: | Article |
| Language: | English |
| Year of first publication: | 2017 |
| Publication year: | 2017 |
| Release date: | 2020/04/20 |
| Tag: | Ti-6Al-4V; additive manufacturing; heat treatment; residual stress; selective laser melting; synchrotron X-ray diffraction |
| Volume: | 10 |
| Number of pages: | 14 |
| Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie |
| Peer review: | Referiert |
