The structureĀ can either be simple, for example ferriteĀ ā pure iron, or complex, for example pearliteĀ ā alternate platelets (small plates) of cementiteĀ and ferrite. To qualify as a phase, the structure must exist within a certain temperature range and composition limits.
A graph which shows the temperature and composition limits of phases is called a phase diagram.
The structureĀ can either be simple, for example ferriteĀ ā pure iron, or complex, for example pearliteĀ ā alternate platelets (small plates) of cementiteĀ and ferrite. To qualify as a phase, the structure must exist within a certain temperature range and composition limits.
A graph which shows the temperature and composition limits of phases is called a phase diagram.