|About this Abstract
|2022 TMS Annual Meeting & Exhibition
|Ultrafine-grained and Heterostructured Materials (UFGH XII)
|Heterostructured V-Ti-Ni Alloy Containing Superelastic Nano-precipitates
|C. Cem Tasan, Jaclyn L Cho
|On-Site Speaker (Planned)
|C. Cem Tasan
V-Ti-Ni alloys can develop a realm of interesting microstructures. The V45Ti30Ni25 (at%) alloy, for example, has a microstructure with superelastic TiNi and stable V-rich bcc phase (β) coexisting in multiple phase mixtures with each acting as matrix and precipitate. In this talk, we will discuss the design principles of this alloy and its interesting microstructure. Furthermore, using results of nanoindentation measurements and in-situ synchrotron and SEM tensile tests coupled with digital image correlation analysis, we will discuss the strain partitioning behaviors of the microstructural constituents, as well as their reverse transformation tendencies. These insights on multi-phase plasticity provide hints for improved damage-resistance in presence of a superelastic phase.