7

Phase Diagrams

7.1 INTRODUCTION

Phase diagrams are important for a metallurgist, as they provide relationship between phases in a system as a function of temperature, pressure and composition. The development of microstructures of an alloy of a particular composition at different temperatures is clearly depicted by a phase diagram. These diagrams also provide information on melting, casting and recrystallization of alloys. If more than two components are present in a system, the phase diagram becomes extremely complicated and it is difficult to represent various phases. Practically, the variation in pressure is not considered and for all phase diagrams studied in this chapter, the pressure is taken as 1 atm.

This chapter describes the solid ...

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