2021-02-25 00:40:40 +05:30
|
|
|
TWIP_Steel_FeMnC:
|
2021-02-24 23:06:06 +05:30
|
|
|
lattice: cF
|
2021-03-25 19:36:45 +05:30
|
|
|
mechanical:
|
2021-06-29 13:44:59 +05:30
|
|
|
elastic: {type: Hooke, C_11: 175.0e+9, C_12: 115.0e+9, C_44: 135.0e+9}
|
2021-03-25 19:36:45 +05:30
|
|
|
plastic:
|
2021-02-24 23:06:06 +05:30
|
|
|
type: dislotwin
|
2021-02-25 00:40:40 +05:30
|
|
|
output: [rho_mob, rho_dip, gamma_sl, Lambda_sl, tau_pass, f_tw, Lambda_tw, tau_hat_tw, f_tr]
|
2021-02-24 23:06:06 +05:30
|
|
|
D: 2.0e-5
|
|
|
|
|
N_sl: [12]
|
|
|
|
|
b_sl: [2.56e-10]
|
2021-06-29 13:44:59 +05:30
|
|
|
rho_mob_0: [1.0e+12]
|
2021-02-24 23:06:06 +05:30
|
|
|
rho_dip_0: [1.0]
|
2021-06-29 13:44:59 +05:30
|
|
|
v_0: [1.0e+4]
|
2021-02-24 23:06:06 +05:30
|
|
|
Q_s: [3.7e-19]
|
|
|
|
|
p_sl: [1.0]
|
|
|
|
|
q_sl: [1.0]
|
2021-06-29 13:44:59 +05:30
|
|
|
tau_0: [1.5e+8]
|
2021-02-25 00:40:40 +05:30
|
|
|
i_sl: [10.0] # Adj. parameter controlling dislocation mean free path
|
|
|
|
|
D_0: 4.0e-5 # Vacancy diffusion prefactor / m^2/s
|
|
|
|
|
D_a: 1.0 # minimum dipole distance / b
|
|
|
|
|
Q_cl: 4.5e-19 # Activation energy for climb / J
|
2021-06-19 18:43:27 +05:30
|
|
|
h_sl-sl: [0.122, 0.122, 0.625, 0.07, 0.137, 0.137, 0.122] # Interaction coefficients (Kubin et al. 2008)
|
2021-02-25 00:40:40 +05:30
|
|
|
# twinning parameters
|
2021-02-24 23:06:06 +05:30
|
|
|
N_tw: [12]
|
2021-02-25 00:40:40 +05:30
|
|
|
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
|
2021-02-24 23:06:06 +05:30
|
|
|
p_tw: [10.0] # r-exponent in twin formation probability
|
|
|
|
|
i_tw: 1.0 # Adj. parameter controlling twin mean free path
|
2021-06-19 18:43:27 +05:30
|
|
|
h_sl-tw: [0.0, 1.0, 1.0] # dislocation-twin interaction coefficients
|
|
|
|
|
h_tw-tw: [0.0, 1.0] # twin-twin interaction coefficients
|
2021-02-25 00:40:40 +05:30
|
|
|
Gamma_sf_0K: -0.0396 # stacking fault energy / J/m^2 at zero K; TWIP steel: -0.0526; Cu: -0.0396
|
|
|
|
|
dGamma_sf_dT: 0.0002 # temperature dependence / J/(m^2 K) of stacking fault energy
|
