About this Abstract |
Meeting |
2026 TMS Annual Meeting & Exhibition
|
Symposium
|
Thermodynamics and Kinetics of Alloys IV
|
Presentation Title |
Alloy Phase Stability upon Electric Current Stressing |
Author(s) |
Shih-kang Lin, Shubhayan Mukherjee |
On-Site Speaker (Planned) |
Shih-kang Lin |
Abstract Scope |
Phase stability in alloys under electric current stressing presents a complex interplay of thermodynamic and structural effects. Beyond electromigration, electric currents can modify lattice strain, introduce defects, and alter transformation pathways. In the Pb-Sn system, electric currents shift the fcc and bct phase boundaries under isothermal conditions. On the other hand, for the Cu6Sn5 intermetallic compound of the Cu-Sn system, electric currents induce structural transitions between distinct polymorphs at temperatures significantly below their equilibrium transition temperature. In the Ag-Cu system, abnormal grain coarsening and recrystallization under electric current stressing are induced by electric currents, indicating broader relevance across alloy systems. These observations point to electric current as a non-thermal driver capable of reshaping phase stability and microstructural evolution. In this context, non-thermal effects of electric currents are not only directional mass transport, but also a strain- and energy-driven phase instability and defect evolution in conductors. |
Proceedings Inclusion? |
Planned: |
Keywords |
Phase Transformations, Electronic Materials, |