Tool and Die Steels

This module introduces tool and die steels including its general characteristics. The effect of alloying elements on the transformation behavior of austenite is discussed. Following this, the role of different alloying elements on hardenability and on tempering behavior of tool steels is enumerated; narrating the role of alloying elements on structure and properties of tool steels, the chemical composition and typical characteristics of different classes of tool steels are presented. Recent efforts on microstructural engineering to improve the fracture toughness of tool steels are illustrated. Further, researches in surface engineering for improving the performance of tool steels is mentioned; the impact of laser surface hardening on the performance of these steels is also highlighted.