Skip to main content

Research Repository

Advanced Search

Effect of the build orientation on the mechanical properties and fracture modes of SLM Ti–6Al–4V

Simonelli, Marco; Tse, Y.Y.; Tuck, Christopher

Authors

Y.Y. Tse



Abstract

Recent research on the additive manufacturing (AM) of Ti alloys has shown that the mechanical properties of the parts are affected by the characteristic microstructure that originates from the AM process. To understand the effect of the microstructure on the tensile properties, selective laser melted (SLM) Ti–6Al–4V samples built in three different orientations were tensile tested. The investigated samples were near fully dense, in two distinct conditions, as-built and stress relieved. It was found that the build orientation affects the tensile properties, and in particular the ductility of the samples. The mechanical anisotropy of the parts was discussed in relation to the crystallographic texture, phase composition and the predominant fracture mechanisms. Fractography and electron backscatter diffraction (EBSD) results indicate that the predominant fracture mechanism is intergranular fracture present along the grain boundaries and thus provide and explain the typical fracture surface features observed in fracture AM Ti–6Al–4V.

Journal Article Type Article
Publication Date Oct 20, 2014
Journal Materials Science and Engineering: A
Print ISSN 0921-5093
Electronic ISSN 0921-5093
Publisher Elsevier
Peer Reviewed Not Peer Reviewed
Volume 616
APA6 Citation Simonelli, M., Tse, Y., & Tuck, C. (2014). Effect of the build orientation on the mechanical properties and fracture modes of SLM Ti–6Al–4V. Materials Science and Engineering: A, 616, doi:10.1016/j.msea.2014.07.086
DOI https://doi.org/10.1016/j.msea.2014.07.086
Keywords Titanium alloys, Fracture, EBSD, Mechanical characterization, Rapid solidification
Publisher URL https://doi.org/10.1016/j.msea.2014.07.086
;