| Abstract Scope |
Due to the immense application potential of complex-shaped Ti-6Al-4V components in various industries, laser-based powder bed fusion (L-PBF) of Ti-6Al-4V has received significant interest from both industry and academia. However, L-PBF processed Ti-6Al-4V component requires a post-heat treatment to achieve a better combination of tensile strength and ductility can be achieved. Scientifically, this requires a more profound understanding of the deformation behavior of L-PBF processed components under quasi-static loading conditions.
Accordingly, the present study has a two-fold focus. Firstly, a novel post heat treatment is designed to achieve a bi-modal microstructure in L-PBF processed Ti-6Al-4V. Secondly, the micro-mechanical deformation behavior of the bimodal microstructure was studied by performing in-situ tensile deformation with synchrotron diffraction. In-situ test revealed the strain partitioning between α and β phase. Detailed analysis of the diffraction peaks revealed a strain partitioning between primary and secondary alpha phase, previously unreported in the literature. |