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Modification of chemical potential for elements at GB

Posted: Sat Mar 14, 2020 4:23 pm
by CharMIC
Hi,

Is there a way to modify chemical potential of an element at a grain boundary in MICRESS?

BR
Chamara

Re: Modification of chemical potential for elements at GB

Posted: Mon Mar 16, 2020 10:06 pm
by Bernd
Hi Chamara,

No, this currently is not possible. In principle, it could be implemented in future as a contribution to the gradient of the diffusion solver. However, there are two problems:

1.) It would be necessary to have either a physical model, or the user would have to specify the energy difference for each phase pair and element.

2.) Because the interface thickness in phase field simulations is different from the physical interface thickness, either the interface composition or the amount of adsorbed solute can be correct, not both...

What is your feeling about that?

Bernd

Re: Modification of chemical potential for elements at GB

Posted: Tue Mar 17, 2020 8:16 am
by CharMIC
Hi Bernd,

found this article regarding such work using PF https://www-sciencedirect-com.ezproxy.s ... 5620300240

Re: Modification of chemical potential for elements at GB

Posted: Tue Mar 17, 2020 7:16 pm
by Bernd
Hi Chamara,

thanks a lot for the link - however there seems to be a login required...

Bernd