Search found 1249 matches

by Bernd
Wed Jul 28, 2021 6:36 pm
Forum: solid-solid phase transformations
Topic: Pearlite to Austenite/Cementite
Replies: 1
Views: 7

Re: Pearlite to Austenite/Cementite

Dear Ali, It is difficult to find anything definitively wrong in your input file without trying to run the problem and without seeing the different types of information from the output. There e.g. could be problems with the dimension of physical parameters like the diffusion coefficients (which can ...
by Bernd
Wed Jul 21, 2021 6:27 pm
Forum: solidification
Topic: solidification of MPEA during LPBF
Replies: 1
Views: 76

Re: solidification of MPEA during LPBF

Dear Atur, During typical L-PBF processes, the solidification speed is well below 1 m/s. For that reason, we do not expect solute trapping (in the sense of non-equilibrium partitioning at the interface) under these conditions. The MICRESS software is based on local quasi-equilibrium at the interface...
by Bernd
Thu Jul 15, 2021 8:03 pm
Forum: trouble-shooting
Topic: MICRESS messages
Replies: 3
Views: 82

MICRESS messages: Other types of error messages

Other types of error messages: Checking for nucleation Nucl.Ph: 2 error= 40200 In this case, error 40200 occurred (wrong state of order in phase 2 , see above) while checking for nucleation and calculating nucleation undercooling in a specific location Thermo-Calc error 1611 MICRESS error 20 phases ...
by Bernd
Thu Jul 15, 2021 8:00 pm
Forum: trouble-shooting
Topic: MICRESS messages
Replies: 3
Views: 82

MICRESS messages: Notifications

There is a number of messages which are not indicating an error but just give relevant information to the user: Fast moving fragment(s) relinearized LIQUID/FCC_L12 (7) This message informs that for interface LIQUID/FCC_L12 7 relinearisations have been performed because a substantial part of the inte...
by Bernd
Thu Jul 15, 2021 6:32 pm
Forum: trouble-shooting
Topic: MICRESS messages
Replies: 3
Views: 82

MICRESS messages: Standard TQ-Errors

MICRESS errors, which occur in MICRESS routines in connection to calls to the TQ-Library, are numerated and will be listed in the following. In some cases, the number is expanded to 3,5 or 6 digits and contains information about the involved element or phase numbers. In other occasions there is a di...
by Bernd
Thu Jul 15, 2021 5:26 pm
Forum: trouble-shooting
Topic: MICRESS messages
Replies: 3
Views: 82

MICRESS messages

Hi all, MICRESS may give the user a lot of different messages during runtime, appearing mostly in the screen or .log output and revealing information about the current status or errors. Unfortunately, many of these messages have been created to be useful for developers only, while others are directe...
by Bernd
Thu Jul 15, 2021 5:01 pm
Forum: solidification
Topic: Misorientation: phase_interaction & redistribution_control
Replies: 1
Views: 39

Re: Misorientation: phase_interaction & redistribution_control

Dear Mauro, Misorientations are calculated on basis of the individual grain orientations. In the MICRESS input file, you can define grain orientations in different ways (quaternions, Euler angles, etc.), the simplest way is just by one angle in 2D ("angle_2D"). The misorientation is the smallest "di...
by Bernd
Thu Jul 15, 2021 4:52 pm
Forum: solidification
Topic: Seed-density and seed-undercooling models
Replies: 26
Views: 1513

Re: Seed-density and seed-undercooling models

Hi Mauro, This indeed is a quite long series of questions, but don't worry about "spamming" - your questions and my answers to them hopefully provide useful information for other users, which can be searched systematically, and thus do not harm to anybody. Let me try to answer in the order of your q...
by Bernd
Fri Jul 09, 2021 7:10 pm
Forum: solid-solid phase transformations
Topic: Setting for redistribution control & nucleation undercooling
Replies: 3
Views: 83

Re: Setting for redistribution control & nucleation undercooling

Hi Pina, Sorry for confusing you, you are right! In the current version 7.0 of MICRESS nucleation undercooling is always calculated relative to equilibrium... Depending on the exact physical picture which one may have with "nucleation", this may even be consistent. However, it also is confusing beca...
by Bernd
Thu Jul 08, 2021 5:43 pm
Forum: recrystallisation/grain growth
Topic: activity energy of Mn in GB
Replies: 1
Views: 62

Re: activity energy of Mn in GB

Dear Sai, Please note that the "mob_corr" option, which modifies the interface mobility in order to mimic diffusion limited growth, is insensitive to boundary diffusion (because boundary diffusion is perpendicular to the interface normal, and thus can influence kinetics only indirectly in special ca...