Numerical simulation of friction extrusion: process characteristics and material deformation due to friction
Research output: Journal contributions › Journal articles › Research › peer-review
Authors
This study employs a finite element thermo-mechanical model, using a Lagrangian incremental setting to investigate friction extrusion (FE) under varying process conditions. The incorporation of rotation in FE generates substantial frictional heat, leading to significantly reduced process forces in comparison to conventional extrusion (CE). The model reveals the interplay between temperature, strain, and strain rate across different microstructural zones of the resulting wire. Specifically, the sticking friction condition in FE enhances initial shear deformation, aligning with a homogeneous spatial strain distribution and predicting complete grain refinement in the extruded wire, as per Zener-Hollomon calculations. On the other hand, under the sliding friction condition in FE, the shear deformation is reduced which results in an inhomogeneous microstructure in the extruded wire. The analysis of material flow in the workpiece reveals distinct transitions from the base material to the thermo-mechanically affected zones. The simulated process force, thermal history, and microstructure during sliding friction conditions align well with the findings from performed friction extrusion experiments.
Original language | English |
---|---|
Article number | 26 |
Journal | International Journal of Material Forming |
Volume | 17 |
Issue number | 3 |
Number of pages | 13 |
ISSN | 1960-6206 |
DOIs | |
Publication status | Published - 05.2024 |
Bibliographical note
Funding Information:
Open Access funding enabled and organized by Projekt DEAL. This project has received funding from the European Research Council (ERC) under the European Union\u2019s Horizon 2020 research and innovation program (grant agreement No 101001567).
Publisher Copyright:
© The Author(s) 2024.
- Dynamic recrystallization, Friction condition, Material flow behavior, Microstructure zones, Process simulation, Thermo-mechanical condition
- Engineering