Understand the metallurgical reactions that occur in heat treatment.
Heat Treatment
Learning Objectives
While reading and after studying this chapter, you will be able to:
● Understand the metallurgical reactions that occur in heat treatment.
● Study and have a knowledge of the vari- ous heat treatments-annealing, normalising, hardening, tempering-which may be given to steels.
● Understand how these range of heat treatments affect the structure and properties of the material.
● Understand T-T-T and C-C-T diagrams and show how non-equilibrium phases can be formed in steel structures.
● Define and measure the hardness and utilize hardenability curves for predicting hardness values of selected steel products.
● Relate the steel-heating processes with various case hardening processes such as carburising, nitriding, cyaniding, carbonitriding, flame and induction hardening.
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