ICME:Post Forming after Extrusion
- M.F. Horstemeyer (MsSt)
- P. Wang (MsSt)
- E. Marin (MsSt)
- H. El Kadiri (MsSt)
- J. Alison (U. of Michigan)
- M. Li (Ford)
- A. Luo (GM)
- W. Misolek (Lehigh U.)
- Material database for Mg alloys, in particular stress-strain curves for various temperatures and strain rates (AZ61, AM30).
AM30 stress-strain curves are shown below:
AZ61 stress-strain curves are shown below:
more specific task inputs:
- AM30 and AZ61 pre-extruded billets (Timminco).
- Experimental data for calibration of macroscopic ISV or flow stress model (task members: China (?), USA-CAVS, USA-Lehigh, Canada (?)): stress-strain curves at different strain rates / temperatures (Materials: AZ61 and AM30). Formal test matrix will be developed jointly between MsSt-CAVS and LU.
- Experimental results from lab-scale extrusion tests for validation of numerical tools (CAVS).
- Constitutive ISV framework for plasticity (modeling group at CAVS).
- Database for texture and microstructure evolution of AM30 and AZ61
- VPSC Model parameters (Voce and dislocation based hardening laws) for AM30 and AZ61 at different temperatures and strain rates
- Fitting routine for ISV material model and VPSC GUI.
- User material routine for material models (ISV and Barnett’s models).
- FE models of extrusion process (lab-scale and Timminco’s) predicting flow stress, strain, strain rates and temperatures.
more specific task outputs:
- Characterization of texture and microstructure of AM30 and AZ61 alloy based pre-extruded billets and rail components.
- Prediction of texture and microstructure of Extruded AM30 and AZ61 Alloys.
- Calibrated material model (ISV and Barnett’s) and corresponding numerical implementation into FE codes.
- Validated crystal plasticity modeling tools (VPSC) to be coupled with the FE-based HyperXtrude model.
- FE models of the extrusion process (Deform3D and HyperXtrude) predicting flow stress, strain, strain rate and temperature distributions.