Question

Write a note on the importance of phase diagram for selecting the proper heat treatment process specially for steel product with a neat sketch of Iron-Iron carbide phase diagram.

Answer 1

Answer:

Alloy metals can exist in different phases. Phases are physically homogeneous states of an alloy. A phase has a precise chemical composition – a certain arrangement and bonding between the atoms.

This structure of atoms imparts different properties to different phases. We can choose the phase we want and use it in our applications.

Only some special alloys can exist in multiple phases. Heating the metal to specific temperatures using heat treatment procedures results in different phases. Some special alloys can exist in more than one phase at the same temperature

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