Here is a quick example script to calculate driving force for formation of ferrite from austenite.

—

mu

define system 'Fe,Cr,Ni,Mo,N,C,Mn' source tcfe !

% fe Cr Ni Mo N

set w(1) undef w(2) 23.00 w(3) 9.0 w(4) 3.0 w(5) 0.15 !

% C Mn

set w(6) 0.02 w(7) 0.8 !

set w 100 !

classify absent p(*) !

step temp 973 1273 10 !

%

% calculating for FCC

%

classify normal p(FCC_A1) !

compute print brief print mol !

compute print graphics_output !

units temperature celsius !

ordinate gibbs system !

plot tabulate spreadsheet !

%

% calculating for BCC

%

classify normal p(BCC_A2) !

compute print brief print mol !

compute print graphics_output !

units temperature celsius !

ordinate gibbs system !

plot tabulate spreadsheet !

—

This gives the answer in Joules / 100 kg.

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