| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Transformations and Microstructural Evolution
|
| Presentation Title |
Spinodal Decomposition in a Nanostructured Cu-Ti Alloy |
| Author(s) |
Julian M. Rosalie, Oliver Renk |
| On-Site Speaker (Planned) |
Julian M. Rosalie |
| Abstract Scope |
One of the major limitations of nanostructured materials is their loss of work-hardening mechanisms and subsequent poor ductility. Conventional approaches to combat this by introducing second-phases are rarely successful due to grain-boundary solute segregation and strong competition for nucleation sites. We have addressed these problems by inducing spinodal decomposition in a nanostructured copper-titanium alloy produced by high-pressure torsion. Isothermal ageing increased the yield strength from 820 MPa to 900 MPa, while reducing the elongation to failure from 11% to 7%. Even in the peak-aged condition there was significant necking at the site of fracture. This work demonstrates that harnessing spinodal decomposition offers a means to control work-hardening and retain ductility in nanostructured materials. |
| Proceedings Inclusion? |
Planned: |