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 energ...

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Autores principales: Mishurova, Tatiana, Cabeza, Sandra, Artzt, Katia, Haubrich, Jan, Klaus, Manuela, Genzel, Christoph, Requena, Guillermo, Bruno, Giovanni
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2017
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5506958/
https://www.ncbi.nlm.nih.gov/pubmed/28772706
http://dx.doi.org/10.3390/ma10040348
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author Mishurova, Tatiana
Cabeza, Sandra
Artzt, Katia
Haubrich, Jan
Klaus, Manuela
Genzel, Christoph
Requena, Guillermo
Bruno, Giovanni
author_facet Mishurova, Tatiana
Cabeza, Sandra
Artzt, Katia
Haubrich, Jan
Klaus, Manuela
Genzel, Christoph
Requena, Guillermo
Bruno, Giovanni
author_sort Mishurova, Tatiana
collection PubMed
description 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.
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spelling pubmed-55069582017-07-28 An Assessment of Subsurface Residual Stress Analysis in SLM Ti-6Al-4V Mishurova, Tatiana Cabeza, Sandra Artzt, Katia Haubrich, Jan Klaus, Manuela Genzel, Christoph Requena, Guillermo Bruno, Giovanni Materials (Basel) Article 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. MDPI 2017-03-27 /pmc/articles/PMC5506958/ /pubmed/28772706 http://dx.doi.org/10.3390/ma10040348 Text en © 2017 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Mishurova, Tatiana
Cabeza, Sandra
Artzt, Katia
Haubrich, Jan
Klaus, Manuela
Genzel, Christoph
Requena, Guillermo
Bruno, Giovanni
An Assessment of Subsurface Residual Stress Analysis in SLM Ti-6Al-4V
title An Assessment of Subsurface Residual Stress Analysis in SLM Ti-6Al-4V
title_full An Assessment of Subsurface Residual Stress Analysis in SLM Ti-6Al-4V
title_fullStr An Assessment of Subsurface Residual Stress Analysis in SLM Ti-6Al-4V
title_full_unstemmed An Assessment of Subsurface Residual Stress Analysis in SLM Ti-6Al-4V
title_short An Assessment of Subsurface Residual Stress Analysis in SLM Ti-6Al-4V
title_sort assessment of subsurface residual stress analysis in slm ti-6al-4v
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5506958/
https://www.ncbi.nlm.nih.gov/pubmed/28772706
http://dx.doi.org/10.3390/ma10040348
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