About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
|
| Symposium
|
Chemistry and Physics of Interfaces
|
| Presentation Title |
Crystal Plasticity Modeling of Slip Localization Near Serrated Grain Boundaries in Copper |
| Author(s) |
James Burns, Marivel Alfaro, Carson Sutton, Adrian Contreras, Wenwu Xu |
| On-Site Speaker (Planned) |
James Burns |
| Abstract Scope |
Grain boundary serration in various engineering alloys such as IN718 and Alloy 600 has been reported to improve creep rupture life, creep ductility, and stress corrosion cracking resistance, but heat treatments that create serrations alter boundary chemistry and precipitates, leaving the geometric contribution unresolved. This talk extends a grain boundary serration modeling framework for copper from elastic stress analysis to crystal plasticity finite element modeling (CPFEM). Serrated grain boundaries are generated on a bicrystal microstructure with controlled amplitude and wavelength, following the model construction strategy used to study thermal-elastic processing induced grain boundary serration, then compared with a smooth boundary counterpart under matched loading. Accumulated plastic slip and slip system activity near the serrated boundary are extracted to quantify deformation redistribution. These CPFEM fields are compared with atomistic copper simulations, linking stress concentration and slip localization tendencies across length scales. The results clarify how serration geometry affects plastic localization. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Computational Materials Science & Engineering, Modeling and Simulation, Copper / Nickel / Cobalt |