working configuration

simulations are not particular stable, but trends are ok and values seem
reasonable
This commit is contained in:
Martin Diehl 2022-02-06 08:11:05 +01:00
parent 20b2079135
commit 1883919b3c
1 changed files with 52 additions and 21 deletions

View File

@ -1,31 +1,62 @@
type: dislotwin
output: [rho_mob, rho_dip, gamma_sl, Lambda_sl, tau_pass, f_tw, Lambda_tw, tau_hat_tw, f_tr]
D: 2.0e-5
output: [rho_mob, rho_dip, gamma_sl, Lambda_sl, tau_pass, f_tw, Lambda_tw, f_tr]
# Slip
N_sl: [12]
b_sl: [2.56e-10]
Q_sl: [3.5e-19]
p_sl: [0.325]
q_sl: [1.55]
B: [0.001]
i_sl: [30.0]
rho_mob_0: [1.0e+12]
rho_dip_0: [1.0]
v_0: [1.0e+4]
Q_sl: [3.7e-19]
p_sl: [1.0]
q_sl: [1.0]
tau_0: [1.5e+8]
i_sl: [10.0] # Adj. parameter controlling dislocation mean free path
D_0: 4.0e-5 # Vacancy diffusion prefactor / m^2/s
tau_0: [3.5e+8]
D_a: 1.0 # minimum dipole distance / b
Q_cl: 4.5e-19 # Activation energy for climb / J
h_sl-sl: [0.122, 0.122, 0.625, 0.07, 0.137, 0.137, 0.122] # Interaction coefficients (Kubin et al. 2008)
# twinning parameters
h_tw-sl: [0.0] # ToDo: values not known
# Twin
N_tw: [12]
b_tw: [1.47e-10] # Burgers vector length of twin system / b
t_tw: [5.0e-8] # Twin stack mean thickness / m
L_tw: 442.0 # Length of twin nuclei / b
x_c_tw: 1.0e-9 # critical distance for formation of twin nucleus / m
V_cs: 1.67e-29 # cross slip volume / m^3
p_tw: [10.0] # r-exponent in twin formation probability
i_tw: 1.0 # Adj. parameter controlling twin mean free path
h_sl-tw: [0.0, 1.0, 1.0] # dislocation-twin interaction coefficients
h_tw-tw: [0.0, 1.0] # twin-twin interaction coefficients
T_ref: 0.0
Gamma_sf: -0.0396 # stacking fault energy / J/m^2 at zero K; TWIP steel: -0.0526; Cu: -0.0396
Gamma_sf,T: 0.0002 # temperature dependence / J/(m^2 K) of stacking fault energy
b_tw: [1.40e-10]
L_tw: 2.e-7 # 800 b_sl
i_tw: 10.0
t_tw: [5.0e-8]
p_tw: [2.5] # A
h_tw-tw: [0.0, 1.0] # ToDo: values not known
h_sl-tw: [0.0, 1.0, 1.0] # ToDo: values not known
# Transformation
N_tr: [12]
b_tr: [1.40e-10]
L_tr: 2.e-7 # 800 b_sl
i_tr: 3.0
t_tr: [1.0e-7]
p_tr: [2.5] # B
V_mol: 7.09e-6
Delta_G: 1.33343932e+02
Delta_G,T: 2.56640412
Delta_G,T^2: 1.49524179e-03
h_tr-tr: [1.0, 1.0] # guessing
h_sl-tr: [0.0, 1.0, 1.0] # guessing
# Twin & Transformation
T_ref: 298.15
Gamma_sf: 2.89394017e-02
Gamma_sf,T: 1.22823814e-04
Gamma_sf,T^2: 1.47322968e-07
x_c: 1.0e-9
V_cs: 1.67e-29
a_cF: 3.62e-10
c/a_hP: 1.633
# Slip & Twin & Transformation
D: 2.0e-5