TTT diagram of eutectoid steel

Time Temperature Transformation curve and its significance is discussed in tamil. It will help you understand the concept behind the heat treatment processes of steel. TTT curve gives the details about the isothermal transformation that occur at various temperatures with respect to time. The change in microstructure, austenite to pearlite or Bainite can be observed from this curve. Heat treatment processes are very important in the field of production engineering.