ABSTRACT
Now we aware of the different mechanisms of phase and structural transformations occurring during the heat treatment of steels. These mechanisms change the crystal structure, phase composition, morphology, and distributions of structural components, grain size, and other parameters that affect the physical and mechanical properties of the material [1]. Sure, we can get the necessary properties of steels and alloys in several ways:
• Extensive. Relies on the creation of new alloys; • Intensive. The basis of this type of classification is a qualitative change in the
existing composition of the material during thermal processing by improving heat treatment. In other words, this method is to match the required manufacturing technology and maintains temperature at each process step.
