Good evening! What is the difference between glass transition temperature and crystallization temperature? Can you also explain diagrams with them, please?
Could you please specify, which diagrams are you asking about?
Regarding your question, as far as I understand, he main difference between glass transition temperature and melting (crystallization) temperature is that glass transition temperature describes the transition of a glass state into a rubbery state (specific for amorphous and semi crystalline compounds) whereas melting temperature describes the transition of a solid phase into a liquid phase (specific for crystalline compounds).
You will probably find this webpage useful, here the difference is really well described.
If you want to clarify anything discussed on that webpage - you are welcome to ask!