Search found 8 matches

by vamsi
Sat Mar 31, 2018 6:34 pm
Forum: solidification
Topic: Odd way of dendrite growth in a Cr, Mn and B alloyed tool steel
Replies: 5
Views: 3182

Re: Odd way of dendrite growth in a Cr, Mn and B alloyed tool steel

Dear Bernd, Thank you for your inputs. By using mob_corr and altering avg driving force, I can be able to simulate dendrite with a regular growth unlike before. So I believe that the problem is solved. But now I'm facing another problem in the same simulation of Fe-C-B-Cr-Mn system. We have 5 elemen...
by vamsi
Mon Mar 26, 2018 4:39 pm
Forum: solidification
Topic: Odd way of dendrite growth in a Cr, Mn and B alloyed tool steel
Replies: 5
Views: 3182

Re: Odd way of dendrite growth in a Cr, Mn and B alloyed tool steel

Dear Bernd, Thank you for the quick response. Yes, I used 45° orientation. 1) I did not use the mob_corr option for this. I started this simulation by using the mobility numbers for each phase interaction from another successfully completed simulation (which has no Mn. I added Mn for this current on...
by vamsi
Mon Mar 26, 2018 2:25 pm
Forum: solidification
Topic: Odd way of dendrite growth in a Cr, Mn and B alloyed tool steel
Replies: 5
Views: 3182

Odd way of dendrite growth in a Cr, Mn and B alloyed tool steel

Hello, I'm running a simulation for Solidification in Cr, Mn and B alloyed tool steel. Grid spacing is 0.5µm and cell dimension is 150 X 150. As you can see in the image file below, initial dendrite growth is looking odd. I feel the interface energies are not the problem. Because higher interface en...
by vamsi
Thu Mar 22, 2018 7:39 pm
Forum: solidification
Topic: Interface expansion and dendrite widespread during the solidification of a tool steel
Replies: 1
Views: 972

Interface expansion and dendrite widespread during the solidification of a tool steel

Hello, I simulated solidification behaviour for a B and Cr alloyed tool steel for three different cooling rates 0.1 K/s, 1 K/s and 10 K/s. Kindly check the following image which shows the dendrite growth at 50%, 65% and 100% solidification. All these simulations are having same resolutions 10µm and ...
by vamsi
Tue Nov 21, 2017 5:27 pm
Forum: solidification
Topic: Error: Solidification in Martensitic tool steel during Selective Laser Melting (SLM) process
Replies: 12
Views: 4694

Re: Error: Solidification in Martensitic tool steel during Selective Laser Melting (SLM) process

Hi Bernd, I think I misunderstood about the output in .cphas files. There are no persistent negative regions in my output but there is a negative composition(Minimum). Just like in the screenshot attached below (cPhase_output.jpg). I think this is not a big problem for the simulation. Is it? Current...
by vamsi
Sat Nov 18, 2017 8:42 pm
Forum: solidification
Topic: Error: Solidification in Martensitic tool steel during Selective Laser Melting (SLM) process
Replies: 12
Views: 4694

Re: Error: Solidification in Martensitic tool steel during Selective Laser Melting (SLM) process

Dear Bernd, Thank you again! In continuation of your previous response (In 4th answer), you've said the checking persistent negative regions will give a hint of the origin of the error. How do I avoid those negative regions? Do you mean by using <Limts>? As you've advised, I put up the all new simul...
by vamsi
Wed Nov 15, 2017 10:34 pm
Forum: solidification
Topic: Error: Solidification in Martensitic tool steel during Selective Laser Melting (SLM) process
Replies: 12
Views: 4694

Re: Error: Solidification in Martensitic tool steel during Selective Laser Melting (SLM) process

Hello Bernd, Thank you very much for your inputs. I have gone through your feedback and my feedback below goes in the same order. 1) In the .TabLin output, what do you mean by solidus/liquidus slopes which are close to 0 ?. The lowest slope I can find is -0.01. Is this number is close to 0 or is it ...
by vamsi
Fri Nov 10, 2017 7:16 pm
Forum: solidification
Topic: Error: Solidification in Martensitic tool steel during Selective Laser Melting (SLM) process
Replies: 12
Views: 4694

Error: Solidification in Martensitic tool steel during Selective Laser Melting (SLM) process

Hello, I'm currently doing MICRESS simulations for martensitic tool steel during selective laser melting process. I'm frequently facing the following errors during the simulation, trying harder! Error = 1 trying hard phases 0 1 level: 4 zp= 40164 error= 1 trying harder! Error = 1 trying hard phases ...