|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Coupling Experiments and Modeling to Understand Plasticity and Failure
||The Effect of Temperature on Deformation of CP-Ti
||Joao Fonseca, Alberto Orozco-Caballero
|On-Site Speaker (Planned)
At RT the deformation of alpha titanium is dominated by prismatic and basal slip, with a varying contributions from twinning. As the temperature increases the amount of twinning usually decreases but tensile ductility increases. This behaviour is usually explained by an increase in c+a slip activity with temperature and the consequent reduction in plastic anisotropy, but recent work has question the validity of this explanation. In this paper, synchrotron diffraction, EBSD, HRDIC were use to determine slip activity in CP-titanium during tensile testing at a number of different temperatures. The results were compared to CPFEM simulations using different anisotropies and twinning criteria. The results confirmed that plastic anisotropy increases with temperature, increasing intragranular deformation heterogeneity. At the same time, deformation heterogeneity within the grains decreases. The implications of these results for the warm formability of Ti alloys are discussed.
||Planned: Supplemental Proceedings volume