Effect of deep cryogenic treatment on residual stress and mechanical behaviour of induction hardened En 8 steel

Abstract

This paper deals with the influence of deep cryogenic treatment on the induction hardened En 8 steel. Deep cryogenic treatment is a treatment of steel at −196 °C for 24 h. The result shows that deep cryogenic treatment increases ultimate tensile strength by 33.94% when compared to conventional induction hardened steel. Deep cryogenic treatment shows a tremendous increase in compressive residual stress of steel. The SEM analysis reveals that martensitic microstructure is observed in deep cryogenic treatment samples and induction hardened samples.

Keywords:

• Cryogenic treatment
• En 8 steel
• pins
• heat treatement
• tensile

Acknowledgement

The author thank the support rendered by Technology Energy Corporation (TEC), USA for this research work.