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Ivan
Copper
Asked: 2020-04-26T09:39:14+05:30 In:

Is recrystallization phenomenona a thermodynamic event ?

Is recrystallization phenomenona a thermodynamic event ?
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    4 Answers

    1. Platinum⭐ Gate aspirant.

      Yes it is. Simply we know what is the driving force for a recrystallization process. It is to reduce or eliminate the deformation in the sample. This can be the elimination of dislocation, stacking faults etc. But all of these reduce the internal energy of system bringing it to more stable state. SoRead more

      Yes it is.

      Simply we know what is the driving force for a recrystallization process.

      It is to reduce or eliminate the deformation in the sample. This can be the elimination of dislocation, stacking faults etc. But all of these reduce the internal energy of system bringing it to more stable state.

      So the driving force is the energy difference between deformed state and recrystallized state, which I think is a thermodynamic event.

      Feedback is welcomed.

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    2. Platinum⭐ Gate aspirant.

      I think this is because it can still decrease it's energy. Thermodynamics instability also means that still a decrease in energy is possible. What is the driving force for grain growth it's the further decrease in energy. However I too support its difficult to conclude that how it is a thermodynamicRead more

      I think this is because it can still decrease it’s energy. Thermodynamics instability also means that still a decrease in energy is possible. What is the driving force for grain growth it’s the further decrease in energy.

      However I too support its difficult to conclude that how it is a thermodynamic event .. nuclei may be in the metastable state. Also if I go through the mechanism this nuclei is not like nuclei formed during solidification. The nuclei is present in the cold deformed state previously in forms if like cells subgrains etc. It is the decrease in the internal energy in the presence of heat that make this process happens.

       

      However I eagerly wait for your point of view and explanation for the same.

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    3. Platinum

      Recrystallisation is a process of formation of nuclei. The driving force for this process is the difference between the strain and unstrain energy. And by this process ultrafine grains are formed. When the dislocations are alligned in an array they forms sub grains. And the opposite dislocations areRead more

      Recrystallisation is a process of formation of nuclei. The driving force for this process is the difference between the strain and unstrain energy. And by this process ultrafine grains are formed. When the dislocations are alligned in an array they forms sub grains. And the opposite dislocations are cancel out with each other and defect free grains that is sub grains are formed during this process. Thermodynamically stable means gibbs free energy should be minimum. I think dt every processes are thermodynamics event .without the driving force no process can occur. And driving force is related to thermodynamics. In recrystallisation nuclei are formed when the grains are in most stable state means strain energy diff is minimum. So it is a thermodynamics event. If i m wrong plz correct me.

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    4. Gold

      Yes, its activity may not be measured, but in nanotechnology thermodynamic function gets reversed

      Yes, its activity may not be measured, but in nanotechnology thermodynamic function gets reversed

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