MICRESS Forum

Dear bachelor, Welcome to the MICRESS Forum! Morphology can have different reasons: It can be due to interface instability (e.g. dendrites or eutectics), to interface anisotropy (e.g. faceted structures), or also to stress effects. If you say your precipitates are round or squared this reminds me to...

Hi lv, I think you can change the behavior by adjusting interfacial energy parameters: If σ(α-α) is chosen smaller than σ(α-γ), there should be wetting between the ferrite precipitates instead of rejection. A factor of 2 is sufficient to achieve full wetting, if the transformation is fully diffusion...

Dear lv,

Did not get your question, can you please explain?

Bernd

Hi Ghavam,

I think the problem could be that the thermal expansion coefficients which you are using are 2-3 orders of magnitude too high. It is length and not volume expansion which is required here.

Bernd

Dear Lv,

Your driving file looks ok. The only detail which I do not understand is why you have two different seed types for ferrite on austenite, where one creates reX-energy and the other doesn't...

Bernd

<t>Dear Pina,<br/> <br/> Meanwhile, I intensively checked your problem with the "paratq" model, and I came to the conclusion that there is a fundamental problem: This model uses the tqgdf2 function of the Thermo-Calc TQ-interface which also allows for calculation of para-equilibrium. However, this m...

Dear Lv, Yes, you can easily omit step 2 in your approach and directly introduce recrystallisation energy using seed type 1. But using seed type 2 instead is more straightforward and also more flexible: Imagine that after recrystallisation you would like to apply another deformation and recrystallis...

Hi Desai, No, it has nothing to do with diffusion data, the error occurred while calculating volumetric data. I tried to reproduce the error, but could not. Instead, there are thousands of other error for interface 0/4 and also for 0/2. My impression is that the basic problem is a too coarse grid re...

Dear lv, I am still not sure about how you want to design your recrystallisation model. By specifying "all_interfaces" in the phase input section for bcc, and by specifying the maximum value of reX-energies (1,0 J/cm3) as energy threshold for recrystallisation you have decided that deformed grains c...

Dear Pina, I still do not understand why you want to apply the higher Mn composition only to the lamellar region and not to the whole area of the colony - what is the reasoning behind? Apart from that, I found a problem in the linearisation parameter sets of fcc/cementite and bcc/cementite with para...