Dislotwin#

Overview of parameters#

YAML key

Type

Default

Description

Possible values

B

1dReal

drag coefficient

D

Real

grain size

D_a

Real

L_tr

Real

length of trans nuclei

L_tw

Real

length of twin nuclei

N_sl

1dInt

[]

N_tr

1dInt

[]

N_tw

1dInt

[]

Q_cl

Real

activation energy for dislocation climb

Q_sb

Real

Q_sl

1dReal

activation energy for glide (J) for each slip system

V_cs

Real

cross slip volume

V_mol

Real

atol_f_tr

Real

1.0e-6

atol_f_tw

Real

1.0e-6

atol_gamma

Real

1.0e-6

atol_rho

Real

1.0

b_sl

1dReal

magnitude of Burgers vector (m) for each slip system

b_tr

1dReal

magnitude of Burgers vector (m) for each transformation system

b_tw

1dReal

magnitude of Burgers vector (m) for each twin system

c/a_hP

Real

extend_dislocations

Bool

false

f_edge

1dReal

edge character fraction of total dislocation density

gamma_0_sb

Real

0.0

value for shearband velocity_0

h_sl-sl

1dReal

h_sl-tr

1dReal

h_sl-tw

1dReal

h_tr-tr

1dReal

h_tw-tw

1dReal

i_sl

1dReal

Adj. parameter for distance between 2 forest dislocations for each slip system

i_tr

Real

adjustment parameter to calculate MFP for transformation

i_tw

Real

adjustment parameter to calculate MFP for twinning

isotropic_bound

Str

‘isostrain’

omega

Real

1000.0

frequency factor for dislocation climb

omit_dipoles

Bool

false

output

1dStr

[]

[‘rho_mob’, ‘rho_dip’, ‘gamma_sl’, ‘Lambda_sl’, ‘tau_pass’, ‘f_tw’, ‘Lambda_tw’, ‘f_tr’]

p_sb

Real

p-exponent in shear band velocity

p_sl

1dReal

p_tr

1dReal

p_tw

1dReal

q_sb

Real

q-exponent in shear band velocity

q_sl

1dReal

rho_dip_0

1dReal

initial dipole dislocation density per slip system

rho_mob_0

1dReal

initial unipolar dislocation density per slip system

t_tr

1dReal

martensite lamellar thickness (m) for each trans system

t_tw

1dReal

twin thickness (m) for each twin system

tau_0

1dReal

strength due to elements in solid solution

tau_sb

Real

value for shearband resistance

v_0

1dReal

dislocation velocity prefactor (m/s) for each slip system

x_c

Real

critical distance for formation of twin/trans nucleus