Effect of Quenching Temperature on Microstructure and Mechanical Properties of Medium-Carbon Steel

The objective of this paper is to enhance service life of excavator bucket teeth for decreasing the idle time required to reinstate the teeth periodically during excavation process. To achieve this goal, medium-carbon steel was chosen with a chemical composition of 0.41C, 0.23Si, 0.75Mn, 1.0Cr, 0.23Mo (wt.%) to cast as Y-blocks with wall thickness of 30 mm using medium-frequency induction furnace. Optimum tensile strength (1492 MPa) and hardness...