|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Advanced Characterization Techniques for Quantifying and Modeling Deformation
||A Study of Anisotropy in Tensile and Cyclic Deformation Behavior of Hexagonal Close Packed Titanium Using Electron Backscatter Diffraction and Elastoplastic Self-consistent Simulations
||Subhasis Sinha, Nilesh P. Gurao
|On-Site Speaker (Planned)
Microstructural characterization using electron backscatter diffraction and crystal plasticity simulations using the elastoplastic self-consistent model were carried out to study micro-mechanisms leading to anisotropy in tensile and cyclic behavior of rolling and transverse direction oriented specimens of commercially pure titanium. The comparison between operative slip and twinning micro-mechanisms provide a holistic perspective of the influence of crystallographic texture and twinning on the deformation and failure characteristics of the material. Due to texture induced difference in nature of twinning, transverse oriented specimen may exhibit higher or lower tensile ductility compared to rolling direction oriented specimen, depending on whether the former is in-plane or out-of-plane with the latter. However, transverse orientation shows higher fatigue life for both in-plane and out-of-plane specimens. This is because deformation micro-mechanisms during cyclic loading are complicated with the occurrence of detwinning and phenomena like oscillations in activity of pyramidal <c+a> slip and extension twinning during individual half-cycles.
||Planned: Supplemental Proceedings volume