|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Dynamic Behavior of Materials VIII
||Strain Rate and Stress Triaxiality Effects on Ductile Damage of Additive Manufactured Ti-6Al-4V
||Andrew Ruggiero, Gianluca Iannitti, Gabriel Testa, Nicola Bonora, Domenico Gentile
|On-Site Speaker (Planned)
In this work, the effects of strain rate and stress triaxiality on ductile damage of additive manufactured Ti-6Al-4V, considering the manufacturing direction, were investigated. Raw material was manufactured by means of EOSSINT M2 80 machine, based on Direct Metal Laser Sintering technology, and machined to obtain round notched bar and Rod-on-Rod (RoR) specimens. Tensile tests on round notched bar specimens were performed over a wide range of strain rates. The failure strains at different stress triaxiality were used to calibrate the Bonora Damage Model. In order to design the symmetric Taylor impact (RoR) tests, numerical simulations were performed for assessing velocities at which incipient and fully developed damage is expected to occur. Tests at selected velocities were carried out and soft-recovered specimens were sectioned and polished to observe the developed damage. Nucleated voids maps were compared with numerical simulations results.
||Planned: Supplemental Proceedings volume