About this Abstract |
Meeting |
TMS Specialty Congress 2025
|
Symposium
|
The 7th International Congress on 3D Materials Science (3DMS 2025)
|
Presentation Title |
Grain-Resolved Reorientation and Orientation Gradient Development in Cyclic Loading of α-Ti Using High Energy X-Ray Diffraction Microscopy |
Author(s) |
Rachel Lim, Sven Gustafson, Darren Pagan, Anthony Rollett |
On-Site Speaker (Planned) |
Rachel Lim |
Abstract Scope |
On the grain scale, materials are heterogeneous and anisotropic which can lead to development of significant grain-scale stresses in polycrystals. Increasing understanding of the effects of this heterogeneity and anisotropy requires experiments which supply three-dimensional, in situ data. High energy X-ray diffraction microscopy (HEDM) is employed to study the in situ grain-resolved evolution of Ti-7Al under during 200 tensile loading cycles below macroscopic yield. Individual grain reorientations are tracked using grain-averaged orientations from far-field HEDM, while spatially-resolved orientations reconstructed via near-field HEDM show the development of slight orientation gradients in some of the grains after the 200 cycles. A comparison between the orientation changes calculated across these two measurements shows both grains with large average reorientations and some with orientation gradient development. |
Proceedings Inclusion? |
Undecided |