Abstract Scope |
In this presentation, I will give an overview on how to create various heterogeneous and adaptive microstructures by defect engineering for controlled strain release during elastic and plastic deformations of Ti-alloys. Compositional and/or structural non-uniformities engineered through various non-conventional phase transformation pathways, thermomechanical processes, and novel processing method such as 3D-printing are shown to have the ability to activate different elastic and plastic deformation mechanisms (including intrinsic elasticity and pseudo-elasticity, and dislocation plasticity and transformation plasticity) at different stages of deformation, offering well-controlled strain release and exceptional mechanical properties including linear superelasticity, ultralow elastic modulus, Invar and Elinvar anomalies, an exceptional combination of strength and ductility and work-hardening ability. |