Difference between phase and grain in a material

[Mohankpvk]

I couldn't get a good explanation differentiating phase and grain.From what I understood, a collection of unit cells arranged in the same orientation is called grain.A collection of grains with similar structure is called phase.Is this interpretation right?

 

[anorlunda]

I'm confused by your question. Are you asking about solid/liquid/gas phases?

 

[ChemAir]

If you are talking about these terms with regard to metallurgy, maybe these links may help.

Phase
Phases-structures-and-the-influences-of-temperature
https://en.wikipedia.org/wiki/Grain_boundary

 

[Mohankpvk]

I'm confused by your question. Are you asking about solid/liquid/gas phases?

No, iron-iron carbide phases(which includes solid, liquid and different solid phases).