About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Characterization Techniques for Quantifying and Modeling Deformation
|
| Presentation Title |
G-8: Xtending the LAPX Model for the Prediction of Creep of Ni-Superalloys Using High Performance Computing |
| Author(s) |
Zhangxi Feng, Ricardo Lebensohn, Laurent Capolungo, Austin Ross, Huajing Song |
| On-Site Speaker (Planned) |
Zhangxi Feng |
| Abstract Scope |
Nickel (Ni) superalloys such as Inconel 100 (IN100) are used in highest temperature parts of a turbine engine, subjected to stresses below the typical yield streses for Ni, resulting in creep deformation. The Los Alamos Polycrystal Code (LAPX) had shown capabilities in accurately predicting creep performance in steels. LAPX is physics-based and uses constitutive laws integrated in a full-field elasto-vicsoplastic Fast Fourier Transform based micromechanical solver. In this work, the LAPX model is extended to model the precipitate-hardening effect in Ni-Superalloys. The new formulations take into consideration of the varying sizes, shapes, and distributions of gamma-prime precipitates whose formations are subjected to the manufacturing conditions such as maximum temperature reached and cooling rate. The model is calibrated with uniaxial tension and compression data at different temperatures then validated with creep experimental data. Data are provided by Pratt and Whitney. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Powder Materials, High-Temperature Materials, Modeling and Simulation |