H.K.D.H. Bhadeshia,
Phase Transformations Group,
Department of Materials Science and Metallurgy,
University of Cambridge,
Cambridge, U.K.
To calculate incubation times due to displacive transformations.
Language: | FORTRAN |
Product form: | Source code |
MAP_STEEL_TTTT calculates the incubation period on an isothermal transformation diagram for two C-curves. SHEART represents the kinetics of displacive transformations such as Widmanstätten ferrite, bainite and acicular ferrite.
SHEART = e^{(243200/RT)} - 135 + 20log(T) - 5log(|GMAX|)
DIFFT represents the kinetics of displacive transformations such as allotriomorphic ferrite and pearlite.
DIFFT = e^{(603100/RT)} - 190.5 + 20log(T) - 4log(|GMAX|)
Both C-curves are for zero percent transformation (the initiation of reaction).
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DOUBLE PRECISION T,GMAX,SHEART,DIFFT,R INCLUDE 'map_constants_gas.f' READ (5,*) T,GMAX CALL MAP_STEEL_TTTT(T,GMAX,SHEART,DIFFT,R) WRITE (6,*) SHEART,DIFFT STOP END
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displacive transformations, ferrite, bainite, pearlite, incubation time
MAP originated from a joint project of the National Physical Laboratory and the University of Cambridge.
MAP Website administration / map@msm.cam.ac.uk