Scheil solidification result problem: fraction liquid is always 1

[amy6chunxiao]

Hi, I load the following database and do Scheil solidification, but only find the liquid phase.

https://github.com/materialsgenomefoundation/2021-workshop-material/blob/main/pycalphad/databases/mc_al_v2.032.pycalphad.tdb

My code is as follows:

The phase fraction is：

[ChRen95]

Got the same error for a different type of steel (low alloyed c-steel)

[amy6chunxiao]

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[ChRen95]

Okay, so I found out what the problem is. First of all your composition seems to be wt% but v.X needs values in mole fractions. The next thing would be that you have to set your start temperature to a temperature where the material is 100% liquid otherwise the Scheil-Gulliver approach won't work