Organizzata dall'Associazione Italiana Metallurgia in collaborazione con la IFHTSE, la conferenza si è tenuta dal 17 al 19 aprile nella sede dell’Università di Lecce.
Nel corso dell’evento scientifico Elisa Ferrari, in forza a Veca Group ha tenuto una presentazione dal titolo: the Impact of treatment time on single annealing thermal cycle performed on Ti-6Al-4V Titanium alloy specimens obtained using LPBF technology. Il paper, realizzato nell'ambito del PHD svolto in collaborazione con l'Università di Modena e Reggio Emilia e Veca Group, è stato pubblicato sul fascicolo di aprile della Rivista Italiana di Metallurgia e vede tra tra i coautori Silvia Gaiani, CEO di Vsystem.
Ecco l’abstract della ricerca
“Additive manufacturing has become a prominent solution for producing intricate components with complex geometries. Titanium alloy Ti-6Al-4V is widely used in additive manufacturing due to its excellent mechanical properties, low density,and corrosion resistance. However, residual stresses generated during the laser powder bed fusion (LPBF) process require specific heat treatments. This research aims to determine the optimal temperature-time parameters of thermal cycles able to reduce residual stresses while achieving desired microstructural conditions. Previous research investigated the impact of heat treatments at different temperatures, with annealing at 800°C and 835°C for 2 hours resulting in the best mechanical properties. The samples treated at 800°C exhibited increased ductility due to the onset transformation of α’ to α + β. The samples treated at 835°C showed a favorable balance between mechanical properties and plasticity. This study expands on the previous research by comparing different treatment times at optimal temperatures and investigating their effect on average mechanical properties and their variance. Complete mechanical and microstructural characterization,including XRD analysis, was conducted on the treated samples.”
