The influence of microstructure on mechanical properties of SLM 3D printed Ti- 6Al-4V

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Abstract

This research focuses on establishing the relationship between the SLM process parameters, microstructure and mechanical properties in 3D printed ti-6Al-4V. To this end modelling of the thermal history, reflecting the applied process parameters, is linked to the as-printed microstructure, which, in turn, is linked to experimentally determined mechanical properties. The very high cooling rates in the centre of the specimen, as predicted by modelling, lead to a fine, martensitic microstructure, while the slower cooling rates close to the support structure lead to a fine lamellar α+β microstructure. The tensile properties, in particular the ductility, were found to depend on the printing orientation and surface finish.
Original languageEnglish
Article number03005
JournalMATEC Web of Conferences
Volume321
Number of pages6
ISSN2261-236X
DOIs
Publication statusPublished - 2020
EventThe 14th World Conference on Titanium (Ti 2019) - La Cité Nantes Events Center, Nantes, France
Duration: 10 Jun 201914 Jun 2019

Conference

ConferenceThe 14th World Conference on Titanium (Ti 2019)
LocationLa Cité Nantes Events Center
Country/TerritoryFrance
CityNantes
Period10/06/201914/06/2019

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