Search found 1294 matches

by Bernd
Thu Jan 06, 2022 5:36 pm
Forum: solidification
Topic: Epitaxial growth in AM
Replies: 3
Views: 80

Re: Epitaxial growth in AM

Hi Moritz, wish you also a Happy New Year. Apart from defining orientations for the initial grains, you also need to introduce anisotropy to the phase interaction (interface mobility and interface stiffness). Otherwise, orientation would not have any effect on growth. Please also take care that grid...
by Bernd
Mon Jan 03, 2022 5:33 pm
Forum: post-processing
Topic: Analyzing average compositions in dendritic and interdendritic regions
Replies: 12
Views: 555

Re: Analyzing average compositions in dendritic and interdendritic regions

Dear Ahmet, Sorry that I somehow missed your reply before leaving for Christmas holidays. Wish you a Happy New Year, anyway. Perhaps my last answer was not clear enough: For simulation of additive processes (or other dendritic simulations with large temperature differences inside the domain) I recom...
by Bernd
Mon Jan 03, 2022 12:51 pm
Forum: Announcements
Topic: Happy New Year 2022
Replies: 0
Views: 57

Happy New Year 2022

*** The MICRESS team wishes all of you a great and happy New Year 2022! ***
by Bernd
Tue Dec 21, 2021 11:34 am
Forum: solidification
Topic: Eutectic solidification during additive processes
Replies: 3
Views: 190

Re: Eutectic solidification during additive processes

Dear Ahmet, 1.) As already said, this is a difficult topic, and my answer is tentative. I think it could be reasonable to do what you propose. You should use the dG value which you typically find at the top (center) of the lamella of the phase to be nucleated. The argument would be that this is the ...
by Bernd
Mon Dec 20, 2021 5:33 pm
Forum: solidification
Topic: Eutectic solidification during additive processes
Replies: 3
Views: 190

Re: Eutectic solidification during additive processes

Dear Ahmet, I will try to answer one by one: 1.) This is difficult to say, because the undercooling depends on your initial situation which may be different from stationary eutectic growth. I would rather say it makes sense to start with the phase with higher expected fraction. You need to bear in m...
by Bernd
Thu Dec 16, 2021 4:48 pm
Forum: post-processing
Topic: Analyzing average compositions in dendritic and interdendritic regions
Replies: 12
Views: 555

Re: Analyzing average compositions in dendritic and interdendritic regions

Dear Ahmet, I think the question is not whether you want to use one or the other type of noise, because it is very inaccurate to use "global" as relinearisation scheme without having a distance option selected: In this case, the whole interface regions between two phases (fcc and liquid in this case...
by Bernd
Wed Dec 15, 2021 9:24 pm
Forum: post-processing
Topic: Analyzing average compositions in dendritic and interdendritic regions
Replies: 12
Views: 555

Re: Analyzing average compositions in dendritic and interdendritic regions

Dear Ahmet, My interpretation of the shape of the MICRESS segregation curve in comparison to Scheil is as follows: - At the very left side (i.e. at fs=0) both curves begin at about the same concentration. This is because of the small undercooling of the initial grain at the start of the simulation. ...
by Bernd
Tue Dec 14, 2021 11:41 pm
Forum: post-processing
Topic: Analyzing average compositions in dendritic and interdendritic regions
Replies: 12
Views: 555

Re: Analyzing average compositions in dendritic and interdendritic regions

Dear Ahmet, Yes, I think that it would probably be more comparable if you start from only one planar grain, so that primary distances can evolve freely and adapt to the cooling conditions. Exactly the dendrites evolving from the grain edges in your LMD case(s) was what I meant with "dominated by the...
by Bernd
Mon Dec 13, 2021 4:53 pm
Forum: solid-solid phase transformations
Topic: pearlite-ferrite
Replies: 1
Views: 105

Re: pearlite-ferrite

Hi shaojielv,

I don't see any reason against. However, it always depends on the details...

Bernd
by Bernd
Mon Dec 13, 2021 4:51 pm
Forum: post-processing
Topic: Analyzing average compositions in dendritic and interdendritic regions
Replies: 12
Views: 555

Re: Analyzing average compositions in dendritic and interdendritic regions

Dear Atur, The type of analysis you do is not trivial, especially with respect to interpretation. I personally did not do anything similar yet, so I can only give you my opinion (and of course my knowledge about how MICRESS and DP_MICRESS work). I think there are several factors which have an influe...