No, I think that anyway it is the initial stage of solidification which determines the final shape...
Bernd
Search found 1506 matches
- Mon Feb 13, 2012 4:38 pm
- Forum: solidification
- Topic: Numerical parameters
- Replies: 8
- Views: 4662
- Sat Feb 11, 2012 1:00 am
- Forum: solidification
- Topic: Numerical parameters
- Replies: 8
- Views: 4662
Re: Numerical parameters
Dear Martin,
you told me in a PM that you use a T-dependent mobility. How does that go together with the variation of mobility you showed - does the given value correspond to the high temperature during the initial stage of solidification?
Bernd
you told me in a PM that you use a T-dependent mobility. How does that go together with the variation of mobility you showed - does the given value correspond to the high temperature during the initial stage of solidification?
Bernd
- Wed Feb 08, 2012 7:40 pm
- Forum: solidification
- Topic: Numerical parameters
- Replies: 8
- Views: 4662
Re: Numerical parameters
Dear Martin, it would be interesting to compare the develolpment of the dendrite shape with time for the different mobility values. I wonder whether the differences which you measure as circumference at a late stage of solidification are already developing at an early stage of dendrite growth, or wh...
- Tue Feb 07, 2012 2:33 pm
- Forum: solid-solid phase transformations
- Topic: Paraequilibrium in MICRESS
- Replies: 2
- Views: 2961
Re: Paraequilibrium in MICRESS
HI nokkikku, I am not sure whether I understand what you mean by "forced" condition. PE defines a certain condition for redistribution of (typically) substituional elements in that way that they are not redistibuted and therefore do not reduce the total driving force of the phase tronsformation. The...
- Fri Jan 27, 2012 6:15 pm
- Forum: solidification
- Topic: Numerical parameters
- Replies: 8
- Views: 4662
Re: Numerical parameters
Dear Martin, for me it is not so clear why the circumference is changing so drastically with mobility - you are sure that there is really no instability involved? Essentially, the only way to find that out and to know the "real" shape of the dendrite is to stepwise increase resolution until the resu...
- Tue Jan 10, 2012 10:22 pm
- Forum: thermodynamics
- Topic: thermodymics problem
- Replies: 3
- Views: 6295
Re: thermodymics problem
Hi Ben, Now I see what you mean! It is possible to get negative compositions inside the interface if you are using an unphysical shape of a linear phase diagram (or possibly if you extrapolate too far from a trmporary linearisation in case of TQ coupling): this is the case if the two phase diagram l...
- Mon Jan 02, 2012 12:36 pm
- Forum: thermodynamics
- Topic: ThermoCal coupled problem, NPLE and no_TQ problem
- Replies: 7
- Views: 9352
Re: ThermoCal coupled problem, NPLE and no_TQ problem
Dear nokkikku, I also wish you a Happy New Year 2012! NPLE is not a thermodynamic condition - you cannot tell Thermo-Calc to switch to NPLE! It is rather a special kinetic situation where the driving force for phase transformation is reduced because of the immobility of the substitutional elements. ...
- Sat Dec 31, 2011 11:11 am
- Forum: pre-processing
- Topic: failure?
- Replies: 6
- Views: 5603
Re: failure?
Dear Raghav, this is definitively an error which is due to a wrong input file! The screen output you sent us seems to be screwed up just before it stops - I would guess that the error occurs in the time input data: probably there is a wrong character in one of the lines, which is interpreted wrongly...
- Tue Dec 27, 2011 3:15 am
- Forum: solidification
- Topic: Change of cooling rate
- Replies: 1
- Views: 1800
Re: Change of cooling rate
Hi Taka,
you can use "connection points" for defining a stepwise temperature-time curve with linear interpolation (see The temperature trend).
Best wishes for the new year!
Bernd
you can use "connection points" for defining a stepwise temperature-time curve with linear interpolation (see The temperature trend).
Best wishes for the new year!
Bernd
- Fri Dec 23, 2011 3:53 pm
- Forum: solid-solid phase transformations
- Topic: Set the crystal information on the monoclinic structrue
- Replies: 1
- Views: 2219
Re: Set the crystal information on the monoclinic structrue
Dear weihua, welcome to the MICRESS forum! For describing "metallic" anisotropy, MICRESS provides only three choices: xyz_axis (tetragonal), cubic and hexagonal. There is no built-in function for monoclinic! Because there are too many possible anisotropy functions the user may wish to apply, our str...