Dear everyone
I have a question that I would like to consult with you. In the simulation of solid phase transiformation, everything is very good. However, after I changed a group of different element concentrations, why did the change of phase transiformation result become so big and there was a big problem?
element concentrations
Re: element concentrations
Sorry, shaojielv,
we need more information to answer this question...
Best regards
Bernd
we need more information to answer this question...
Best regards
Bernd
Re: element concentrations
Dear, Bernd
Thank you very much for your reply, and I will further explain the problem. The concentration in the left picture is 0.1C-1.5Mn, which indicates that the result is very normal. The right picture is the result when I changed the concentration to 0.05C-0.5Mn, and the other parameters have not changed. I hope to get your help.
Thank you very much for your reply, and I will further explain the problem. The concentration in the left picture is 0.1C-1.5Mn, which indicates that the result is very normal. The right picture is the result when I changed the concentration to 0.05C-0.5Mn, and the other parameters have not changed. I hope to get your help.
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- Fig.1.png (237.47 KiB) Viewed 8508 times
Re: element concentrations
Dear shaojielv,
The most probable reason for the differences is the altered equilibrium temperature: By reducing the amount of alloying elements, the equilibrium temperature is increased, leading to a higher undercooling/driving force and hence to a faster transformation rate. This in turn leads to front instability and finer microstructures.
Thus, to obtain comparable results, you should change temperature such that a comparable undercooling is reached (use Thermo-Calc equilibrium calculation, or check dG value of initial linearisation parameters in MICRESS .log-output).
Bernd
The most probable reason for the differences is the altered equilibrium temperature: By reducing the amount of alloying elements, the equilibrium temperature is increased, leading to a higher undercooling/driving force and hence to a faster transformation rate. This in turn leads to front instability and finer microstructures.
Thus, to obtain comparable results, you should change temperature such that a comparable undercooling is reached (use Thermo-Calc equilibrium calculation, or check dG value of initial linearisation parameters in MICRESS .log-output).
Bernd
Re: element concentrations
Dear Bernd,
Thank you very much. The problem has been solved according to your suggestion. Wish you a happy life.
lv
Thank you very much. The problem has been solved according to your suggestion. Wish you a happy life.
lv