Diffusion Problem

dendritic solidification, eutectics, peritectics,....
materialmoop
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Re: Diffusion Problem

Post by materialmoop » Mon Nov 17, 2025 10:32 am

Hi,

Thank you for your response :) I only have up to TCFe11 licensed, and I am using ThermoCalc2025a. I have now made the script more specific with regards to the phases:

set-echo
go dat
sw TCFe11
d-sys fe c mn si
l-sy CONSTITUENT
l-sy phases
rej phases *
rest phases liq fcc_a1 bcc_a2
get
app mobfe5
d-sys fe c mn si
l-sy CONSTITUENT
l-sy phases
rej phases *
rest phases fcc_a1 bcc_a2
get
go gibbs
save newFeCMnSi

However, when nucleation is supposed to begin, I receive the following error message many times: Thermo-Calc error 1611 MICRESS error 20 Thermo-Calc
Could you please tell me why I may be getting this error and how I could create the correct database?

Many thanks!

ralph
Posts: 188
Joined: Wed Apr 27, 2011 4:42 pm
anti_bot: 333

Re: Diffusion Problem

Post by ralph » Mon Nov 17, 2025 12:07 pm

See here a list of the MICRESS error codes:
viewtopic.php?f=23&t=734
The undercooling cannot be calculated.

Your mobility database MOBFE5 might be incompatible to your thermo-dynamic database TCFE11.
Is this the newest mobility database you have?
There was a MOBFE6 published together with TCFE11 in 2021.

Best,
Ralph

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