About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Additive Manufacturing of Metals: Applications of Solidification Fundamentals
|
Presentation Title |
Temporal Transients of Plastic Strain Partitioning between Alpha and Beta Phases in Ti6Al4V during Thermo-mechanical Gyrations |
Author(s) |
Sabina Kumar, Kate Shanks, Dieter Ishiem, Sudarsanam Suresh Babu |
On-Site Speaker (Planned) |
Sabina Kumar |
Abstract Scope |
Spatial and temporal thermal gradients are expected to induce stresses above and below the yield stress of the phases, leading to plastic instabilities. Plastic straining at high temperatures is expected to change relative phase fractions and local constitutive properties. Although the role of thermal signatures can be rationalized based on nucleation and growth of the product/parent phase under non-isothermal conditions, all the above work have not considered the role of thermo-mechanical gyrations. The current work pertains to the history-dependent dynamic interactions of phase transformations and deformation characteristics. A time-resolved study of the partitioning and accumulation of plastic strains between the alpha and beta phases is studied with in-situ high energy X-ray experiments conducted at CHESS. Atom Probe analysis indicated changes in the concentration of Al and V across the interface. Results were evaluated with DICTRA to rationalize the thermodynamics equilibrium kinetics of the interface under complex thermo-mechanical reversals. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Phase Transformations, Titanium |