| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Transformations and Microstructural Evolution
|
| Presentation Title |
In-Situ Study of Bulk Hetero-Nanostructured Copper During Heating Using Mono- and Polychromatic Synchrotron X-Ray Diffraction |
| Author(s) |
Isshu Lee, Laxman Bhatta, Jae-Kyung Han, Nobumichi Tamura, Malte Blankenburg, Klaus-Dieter Liss, Megumi Kawasaki |
| On-Site Speaker (Planned) |
Isshu Lee |
| Abstract Scope |
Severe plastic deformation techniques are known for their microstructural refinement to produce ultrafine-grained materials with enhanced strength. There is still much to be discovered in the evolution of their hetero-nanostructure with changes in temperature and time. In this study, two novel micro-beam synchrotron X-ray diffraction techniques are used to analyze real-time microstructural relaxation throughout a heating and cooling cycle of bulk hetero-nanostructured copper produced by high-pressure torsion. The monochromatic X-ray beams can yield changes in lattice parameters, segregation effects, phase compositions, crystallographic ordering, and other microstructure properties (micro-strain, crystalline size, texture, etc.). By contrast, a polychromatic X-ray beam can determine grain reorientation, and grain coarsening, during microstructural relaxation. These separate methods can provide complementary information that will further assist in the control and production of advanced nanostructures. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Copper / Nickel / Cobalt, Mechanical Properties |