About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
|
| Symposium
|
Field-Assisted Material Processing and Solidification
|
| Presentation Title |
Current effects on tensile deformation of copper wires |
| Author(s) |
Fuqian Yang |
| On-Site Speaker (Planned) |
Fuqian Yang |
| Abstract Scope |
Electric current has been used to assist a variety of material-processing techniques, including electric-discharge consolidation, spark plasma sintering, and crack healing. A key feature of the current-assisted processes is localized Joule heating, which can alter the mechanical responses of materials. In this study, we demonstrate that the application of pulsed electric current results in the softening of copper wires. The yield stress decreases with increasing current density at a constant pulse frequency and with increasing pulse frequency at a constant current density. Microstructural characterization reveals a reduction in local dislocation density and grain growth after current treatment. A simplified thermal analysis indicates that Joule heating produces a nonuniform temperature distribution within the copper wires. These findings suggest that localized Joule heating plays a critical role in the observed mechanical softening and microstructural evolution of copper wires.
This work is supported by the NSF through the grant DMR-2409132. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Copper / Nickel / Cobalt, Process Technology, Mechanical Properties |