Search found 6 matches

by AZheng
Mon Nov 12, 2018 1:29 pm
Forum: solid-solid phase transformations
Topic: Morphology of reversed austenite
Replies: 9
Views: 4007

Re: Morphology of reversed austenite

Dear Bernd,

Yes..I know the interface energy is small but if not, the austenite will not become bigger and show dendritic shape. I have no idea about how to make austenite grow along inerface(lateral growth)....
Any suggestion will be appreciated.

Best regards,
Rui
by AZheng
Thu Nov 08, 2018 4:30 pm
Forum: solid-solid phase transformations
Topic: Morphology of reversed austenite
Replies: 9
Views: 4007

Re: Morphology of reversed austenite

Hi Bernd,

Thanks a lot for your explaination and it is helpful. While there is another question.
The austenite should have smooth interface (lateral growth) but the result shows dendrite-like morphology shown below. Is there any solution to get smooth interface?

Best regards,
Rui
by AZheng
Fri Oct 12, 2018 5:14 pm
Forum: solid-solid phase transformations
Topic: Morphology of reversed austenite
Replies: 9
Views: 4007

Re: Morphology of reversed austenite

Hello Bernd, Sorry for the missing information, attached is the full input file. I have some questions about "Conditions for that would be a low driving force (i.e. small overheating), otherwise you will always get a cellular or dendritic morphology. To achieve that, you could perhaps nucleate earli...
by AZheng
Thu Oct 04, 2018 1:49 pm
Forum: solid-solid phase transformations
Topic: Morphology of reversed austenite
Replies: 9
Views: 4007

Re: Morphology of reversed austenite

Dear Bernd, Many thanks for your suggestion. I tried to increase the interfacial energy between austenite and ferrite, but it seemed not work. The side branch is still obvious(like the figure below). Also, is the existence of sharp tips due to the growth along grain boundaries? Is it possible to get...
by AZheng
Mon Sep 24, 2018 11:50 am
Forum: solid-solid phase transformations
Topic: Morphology of reversed austenite
Replies: 9
Views: 4007

Morphology of reversed austenite

Hello, I am trying to simulate the phase transition from ferrite to austenite. The morphology of reversed austenite i simulated is shown below(Fig.1), but it seems not good. Compared with the real morphology(Fig.2), the tips should not be so sharp and the extrudations in the middle should not appear...
by AZheng
Thu Jun 14, 2018 2:55 pm
Forum: solid-solid phase transformations
Topic: Interface movement
Replies: 1
Views: 2193

Interface movement

Hello, We are trying to simulate the phase transition from ferrite to austenite. The grain input setup we use from_file option and the nucleation position is interface. At first there was only one horizontal straight line(as interface), everything was fine. But when we changed to nonhorizontal lines...