How the cooling rate effect the formation in complex Metallic Alloy?

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P. Van Mourik

Dear Hadi Parsamehr,

I agree with the remarks made by Hannes Engelhardt. Studying the relevant phase diagrams is of course the first thing to do in your case. However, varying the cooling rate implies that the kinetics of the (metastable) intermediate phase formation will enter into the discussion. Besides, one has to invoke the possibility of crystal segregation yielding solidification routes that on principle deviate from the relevant equilibrium phase diagram. So good luck with your experimental study!

Jiří Kroc

your question is quite open. Therefore, I will speak about complex systems simulations. On youtube you can find:

Cellular Automata simulation of free dendritic solidification - YouTube

https://www.youtube.com/watch?v=GBSCnC9Yjc0

A recent publication is

http://www.sciencedirect.com/science/article/pii/S0927025615002736

or you can turn your attention to software with source code:

https://www.researchgate.net/publication/317013011_Self-Organization_Video_Sequence_Depicting_Numerical_Experiments_with_Cellular_Automaton_Model_of_Dynamic_Recrystallization_with_source-code_link

https://www.researchgate.net/publication/316989956_Cellular_Automaton_Simulation_of_Dynamic_Recrystallization_Introduction_into_Self-Organization_and_Emergence

which might give you a hint how to proceed further.

I general, the best way to understand the formation of complex structures within cooling materials is to have a complex systems software in hands. Run simulations and observe. The above-mentioned software gives you a hints how it can be programmed.

Good luck at your research and looking for explanations of experimentally observed phenomena in cooling materials.

Kind regards

Jiri

Code Cellular Automaton Simulation of Dynamic Recrystallization: ...

Research Self-Organization: Video Sequence Depicting Numerical Experi...

Abdul Khaliq

Dear Hadi,

According you statement, you have amorphous solid at 800C How have you achieved amorphous? Rapid solidification/ fast cooling rate facilitate to achieve such amorphous structures.

Best first hand guidance is Equilibrium phase diagrams of the system. Then you can calculate required cooling rates to suppress the formation of any particular phase above set temp (say 620C in your case). Inbox me if you want to discuss in detail. I may be able to run couple of simulations using thermodynamic software to predict phase transformation events.

Cheers

Abdul