Table 1 Model parameters used in the simulations
From: Microstructure evolution in deformed polycrystals predicted by a diffuse interface Cosserat approach
Parameter | Value | Unit | Comment |
|---|---|---|---|
Elasto-viscoplastic parameters | |||
\(\,C_{11}\) | 160 | GPa | Elasticity moduli for cubic symmetry |
\(\,C_{12}\) | 110 | GPa | |
\(\,C_{44}\) | 75 | GPa | |
\(\,\mu _c/f_0\) | 11.5 | GPa | Cosserat modulus |
\(\,\mu \) | 46 | GPa | Mean shear modulus |
\(\,b\) | 0.2556 | nm | Burgers vector (magnitude) |
\(\,K_v\) | 10 | MPa s1/n | Viscoplasticity parameters |
\(\,n\) | 10 | ||
\(\,K\) | 1/10 | Kocks–Mecking parameters | |
\(\,d\) | 10 | nm | |
\(\,C_D\) | 100 | Determines the rate of static recovery | |
\(\,C_A\) | 1 | \(\upmu \mathrm {m}\) | |
Phase-field and mobility parameters | |||
\(\,f_0\) | 1.15 | MPa | Sets the magnitude of the grain boundary energy |
\(\,s\) | 1.5 | \(\upmu \mathrm {m}\) | |
\(\,a\) | 0.62 | \(\upmu \mathrm {m}\) | |
\(\,\varepsilon \) | 2 | \(\upmu \mathrm {m}\) | Sets the grain boundary width |
\(\,\tau _\phi /f_0\) | 100 | s | Viscosity type (mobility) parameter for \(\dot{\phi }\) |
\(\,\hat{\tau }_\star /f_0\) | 10 | s | Viscosity type parameter for \(\overset{\times }{\underline{\varvec{\omega }}}\,\!^\star \) |