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Basic Mechanical Engineering by Pravin Kumar

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24

Heat Treatment

Chapter Objectives

In this chapter, you will learn about:

  • Fe–C (iron–carbon) diagram
  • Time–temperature–transformation (TTT) diagram
  • Normalizing
  • Annealing
  • Tempering
  • Hardening
  • Carburizing
  • Nitriding
  • Cyaniding
  • Induction hardening
24.1  INTRODUCTION

Heat treatment is a process to control the mechanical properties of engineering materials by heating, cooling, and alloying the metal as per requirement. It deals with change in properties by alloying different elements to the metal at various temperatures. The various mechanical properties such as hardness, toughness, ductility, machinability, and grain refinement are controlled by heat treatment process. In this chapter, we deal only with steel and its properties. Some of the basic ...

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