About this Abstract |
Meeting |
Superalloys 2024
|
Symposium
|
Superalloys 2024
|
Presentation Title |
Full-field Microstructure Modeling During Forging a Polycrystalline γ-γ’ Nickel-based Superalloy |
Author(s) |
Chi-Toan Nguyen, Daniel Galy, Jean-Michel Franchet, Jérôme Blaizot, Christian Dumont, Lucie Le Saché, Julien de Jaeger, Baptiste Flipon, Nathalie Bozzolo, Marc Bernacki |
On-Site Speaker (Planned) |
Chi-Toan Nguyen |
Abstract Scope |
The present paper demonstrates great capability of the full-field finite element DIGIMU® software included recrystallization models to simulate the microstructure evolution during forging an industrial part in René 65, a γ-γ' nickel-based superalloy. The macroscopic forging conditions simulated by the finite element FORGE® software were used as the thermo-mechanical inputs of the microstructure simulations in the DIGIMU® software. The recrystallization models in the DIGIMU® software were calibrated from torsion tests on laboratory-scale samples at sub-solvus and super-solvus temperatures from 1000 °C to 1150 °C and at strain rates ranging from 10-2 to 0.75 s-1. The calibrated model is able to predict, correctly, the mean and distribution of grain sizes in different deformation conditions of laboratory-scale samples and, more importantly, for eight different positions of interest in an industrial part forged by multiple operations at sub-solvus temperatures and followed by a solution heat treatment. The differences between the predicted and experimental average grain sizes are in the range of 0.5 to 1.0 ASTM (which is around 1.5 to 3.0µm difference when comparing to the experimental grain size of 10 ASTM ~ 11µm). The model will help with understanding and optimizing of forging processes to achieve desirable microstructures and, in turn, the mechanical properties of aircraft engine forged components. |
Proceedings Inclusion? |
Definite: At-meeting proceedings |