Waiting time/ Scheil solidification calculation about opencalphad HOT 6 CLOSED

Hello Trianex,

Tried to repeat your calculation using your compositions and Scheil
solidification in OpenCalphad CAE.
Yes, it shows the same information when plotting Fig12 (even Fig1) since
the Scheil calculation is not done correctly..

You can try to check the error for the calculation.

1. Go to tabWidget "Exec" and uncheck the "Show Console Window";
2. Click button "Run Macro File" again
3. Go to "Results" zone and click "Console results"
4. You may find error message:

Error codes: 4399 0 50

Message: No message assigned

So no Scheil calculation results are available.

You can also check the result file from
C:\OpenCalphad_CAE_0_0_9\Console\temp\fig1.plt and no valid data can be
found.

Best regards,
Developer of OpenCalphad CAE

from opencalphad.

Hi Jerry1999,
Yes, I tried those things you mentioned and saw the same error message as well.
I have tested another compositions without carbon, and it performed correctly.
Seems Scheil calculation results are unavailable when carbon is present.

Regards,
Trianex

from opencalphad.

Hello Trianex,

It is possibel to get correct results (Fig1 and Fig12) using following settings:

1. Type start temperature as 2520 K (Enter)
2. Type Eq temperature as 2503 K (an equilibrium only in the liquid)
3. Type Step as 15

God luck!

from opencalphad.

Hi Jerry1999,
Thanks! That really worked using your steps.
Just to take note about it, how can I reach out to this kind of solution? I tried different approaches without success.
I saw the fig10, and you recommended parameters that are close to the start transformation temperature of Graphite-A9 and FCC-A1. Seems that a temperature little bit higher and more steps solved the waiting time issue.

Regards,
Trianex

from opencalphad.

Hello Trianex,

Two comments:

1. If you check the "Console results", you can find that FCC_A1 appears at 2502.71 (from the listed texts below) and so Eq temperature is set as 2503 K:
   --->OC6:--->OC6:--->OC6:--->OC6:--->OC6:... echo: step
   Step options? /NORMAL/: ... echo: scheil
   ... the command in full is SCHEIL_GULLIVER
   Before this command you must have set an alloy composition and calculated
   an equilibrium in the liquid and have set an axis with T as variable.
   Have you done all that? /NO/: ... echo: Y
   The simulation will decrease T and change the liquid composition depending
   on the solids formed until there is no liquid stable.
   In step_scheil
   Entering map_startpoint 1

Line 1 from 2.503000E+03 with: LIQUID#1
Stable phase at start: LIQUID#1 1
Creating a node at 2502.71 where FCC_A1 appears
Terminating line with 8 equilibria at axis limit 2.5027E+03
Per cent liquid and T 100.00000000000000 2502.7079307586955

2. The pre-defined waiting time is only related to your computer hardware and gnuplot execution time. It allows enough time for the OpenCalphad CAE program to draw the gnuplot Fig and embed the drawn Fig into the Results widget. In your case, it is due to missing data in gnuplot file (Fig1 and Fig12).

from opencalphad.

Hi Jerry1999,
That is enough.
Thank you for your kind help and support.

All the best,
Trianex

from opencalphad.