About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
|
| Symposium
|
Chemistry and Physics of Interfaces
|
| Presentation Title |
Interface-Mediated Plasticity and Enhanced Ductility in Chemically Heterogeneous Multiphase Ag-Ni Nanolayers |
| Author(s) |
Frederic Sansoz |
| On-Site Speaker (Planned) |
Frederic Sansoz |
| Abstract Scope |
This talk presents nanoscale experiments and atomistic simulations revealing a nanoscale strengthening mechanism in which ultrathin, partially crystalline Ni-rich nanolayers are intercalated between thicker nanocrystalline Ag films, forming a stable multilayer of nanocrystalline Ag and multiphase Ni-Ag nanoalloy. This architecture yields a hardness of 2.6 GPa, tensile strength of 677 MPa, and 6.6% plastic elongation, surpassing previous Ag thin-film records while preserving high electrical conductivity. Chemical and structural heterogeneities confined within the intercalated nanolayers promote multiphase interface-mediated plasticity, markedly enhancing strain hardening and tensile ductility relative to conventional crystalline Ag-Ni nanolaminates at similar Ag thickness. This mechanism offers a general strategy for designing nanocrystalline metallic films with interfaces engineered for exceptional mechanical and physical properties. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nanotechnology, Thin Films and Interfaces, Mechanical Properties |