diff --git a/code/config/Phase_Dislotwin_TWIP_Steel_FeMnC.config b/code/config/Phase_Dislotwin_TWIP_Steel_FeMnC.config index 3ffc09964..63b012a63 100644 --- a/code/config/Phase_Dislotwin_TWIP_Steel_FeMnC.config +++ b/code/config/Phase_Dislotwin_TWIP_Steel_FeMnC.config @@ -31,17 +31,19 @@ grainsize 2.0e-5 # Average grain size [m] SolidSolutionStrength 1.5e8 # Strength due to elements in solid solution ### Dislocation glide parameters ### -Nslip 12 0 0 0 -slipburgers 2.56e-10 0 0 0 # Burgers vector of slip system [m] -rhoedge0 1.0e12 0 0 0 # Initial dislocation density [m/m**3] -rhoedgedip0 1.0 0 0 0 # Initial dislocation density [m/m**3] -Qedge 3.7e-19 0 0 0 # Activation energy for dislocation glide [J] -v0 1.0e-4 0 0 0 # Initial glide velocity [m/s] -CLambdaSlip 10.0 0 0 0 # Adj. parameter controlling dislocation mean free path +Nslip 12 0 +slipburgers 2.56e-10 0 # Burgers vector of slip system [m] +rhoedgedip0 1.0 0 # Initial dislocation density [m/m**3] +rhoedge0 1.0e12 0 # Initial dislocation density [m/m**3] +v0 1.0e-4 0 # Initial glide velocity [m/s] +Qedge 3.7e-19 0 # Activation energy for dislocation glide [J] +pexponent 1.0 1.0 # p-exponent in glide velocity +qexponent 1.0 1.0 # q-exponent in glide velocity +tau_peierls 0.0 # Peierls stress (only used for bcc materials) +# hardening of glide +CLambdaSlip 10.0 0 # Adj. parameter controlling dislocation mean free path D0 4.0e-5 # Vacancy diffusion prefactor [m**2/s] Qsd 4.5e-19 # Activation energy for climb [J] -pexponent 1.0 # p-exponent in glide velocity -qexponent 1.0 # q-exponent in glide velocity Catomicvolume 1.0 # Adj. parameter controlling the atomic volume [in b] Cedgedipmindistance 1.0 # Adj. parameter controlling the minimum dipole distance [in b] atol_rho 1.0 @@ -49,7 +51,7 @@ interactionSlipSlip 0.122 0.122 0.625 0.07 0.137 0.122 # Interaction coefficient ### Shearband parameters ### shearbandresistance 180e6 -shearbandvelocity 1e-4 +shearbandvelocity 1e-4 # set to zero to turn shear banding of QedgePerSbSystem 3.7e-19 # Activation energy for shear banding [J] ### Twinning parameters ### @@ -68,4 +70,4 @@ interactionSlipTwin 0.0 1.0 1.0 # Dislocation-Twin interaction coefficients interactionTwinTwin 0.0 1.0 # Twin-Twin interaction coefficients atol_twinFrac 1.0e-7 SFE_0K -0.0396 # stacking fault energy at zero K; TWIP steel: -0.0526; Cu: -0.0396 -dSFE_dT 0.0002 # temperature dependance of stacking fault energy \ No newline at end of file +dSFE_dT 0.0002 # temperature dependance of stacking fault energy diff --git a/code/config/Phase_Dislotwin_Tungsten.config b/code/config/Phase_Dislotwin_Tungsten.config new file mode 100644 index 000000000..59d34ef45 --- /dev/null +++ b/code/config/Phase_Dislotwin_Tungsten.config @@ -0,0 +1,63 @@ +### $Id$ ### +[Tungsten] + +elasticity hooke +plasticity dislotwin + +### Material parameters ### +lattice_structure bcc +C11 523.0e9 # From Marinica et al. Journal of Physics: Condensed Matter(2013) +C12 202.0e9 +C44 161.0e9 + +grainsize 2.0e-5 # Average grain size [m] +SolidSolutionStrength 1.5e8 # Strength due to elements in solid solution + +### Dislocation glide parameters ### +#per family +Nslip 12 0 +slipburgers 2.72e-10 # Burgers vector of slip system [m] +rhoedge0 1.0e12 # Initial dislocation density [m/m**3] +rhoedgedip0 1.0 # Initial dislocation density [m/m**3] +v0 1.0e-4 # Initial glide velocity [m/s] +Qedge 2.725e-19 # Activation energy for dislocation glide [J] +pexponent 0.78 # p-exponent in glide velocity +qexponent 1.58 # q-exponent in glide velocity +tau_peierls 2.03e9 # peierls stress (for bcc) + + +#hardening +CLambdaSlip 10.0 # Adj. parameter controlling dislocation mean free path +D0 4.0e-5 # Vacancy diffusion prefactor [m**2/s] +Qsd 4.5e-19 # Activation energy for climb [J] +Catomicvolume 1.0 # Adj. parameter controlling the atomic volume [in b] +Cedgedipmindistance 1.0 # Adj. parameter controlling the minimum dipole distance [in b] +atol_rho 1.0 +interactionSlipSlip 0.122 0.122 0.625 0.07 0.137 0.122 # Interaction coefficients (Kubin et al. 2008) + +### no shear banding, no twinning +shearbandvelocity 0.0 # no shear banding +Ntwin 0 # no shear banding + +### Shearband parameters ### + +shearbandresistance 180e6 +QedgePerSbSystem 3.7e-19 # Activation energy for shear banding [J] + +### twinning parameter ### +twinburgers 1.47e-10 # Burgers vector of twin system [m] +twinsize 5.0e-8 # Twin stack mean thickness [m] +L0 442.0 # Length of twin nuclei in Burgers vectors +maxtwinfraction 1.0 # Maximum admissible twin volume fraction +Ndot0 0.0 # Number of potential sources per volume per time [1/m**3.s] +xc 1.0e-9 # critical distance for formation of twin nucleus +VcrossSlip 1.67e-29 # cross slip volume +rexponent 10.0 # r-exponent in twin formation probability +Cmfptwin 1.0 # Adj. parameter controlling twin mean free path +Cthresholdtwin 1.0 # Adj. parameter controlling twin threshold stress +interactionSlipTwin 0.0 0.0 0.0 # Dislocation-Twin interaction coefficients +interactionTwinTwin 0.0 0.0 # Twin-Twin interaction coefficients +atol_twinFrac 1.0e-7 +SFE_0K -0.0396 # stacking fault energy at zero K; TWIP steel: -0.0526; Cu: -0.0396 +dSFE_dT 0.0002 # temperature dependance of stacking fault energy +