Failure mechanism data related to the crack path of additively manufactured Ti-6Al-4V reiforced by nano-sized particules

To clarify the reason for this peculiar behavior, one specimen presenting such a fracture surface pattern has been sliced at a position where the fracture surface presents both stair-like pattern and mode I fracture surface mode. The obtained surface was finished by colloidal silica suspension to undertake electron back scattered diffraction (EBSD) characterizations at several key positions. (i) One EBSD acquisition has been operated along an inclined plane (corresponding to Fig. 2(a) of the related Data in Brief).

(ii) One EBSD acquisition has been operated at the transition between the stair-like pattern and the mode I fracture mode (corresponding to Fig. 2(b) of the related Data in Brief). (iii) One EBSD acquisition has been operated at a location where mode I fracture mode occurs (corresponding to Fig. 2(c) of the related Data in Brief). For each position, based on the EBSD data (raw files .osc available in the present repository) the local microstructure has been analyzed via crystallographic and geometrical orientation of the primary α- grains.

Furthermore, one particular crack path observed in one "valley" of the stair-like pattern has revealed a kink, such as the local crack path is almost perpendicular to the loading direction, which is an extremely detrimental configuration from the energy viewpoint. An EBSD acquisition of this zone (corresponding to Fig. 3 of the related Data in Brief) has been carried out.