Abstract
In this study, hardenability of EN19 alloy steel has been investigated for different quenchants using a Jominy test setup. During experimentation, the temperatures were recorded using a thermocouple inserted in the specimen. Hardenability curves, cooling curves, cooling rate curves and heat flux curves were determined and are presented graphically. Microstructures were developed at various sections of the quenched specimens to study the changes in the morphology of phases. Cooling power of the quenchants has been predicted based on the hardenability curves as well as thermal characterisation. It is observed that brine solution results in more heat extraction from the steel specimens compared with other quenchants. The paper aims to establish that cooling rate curves and heat flux curves determination can be a suitable technique to characterise quenchants to assess its suitability for industrial applications.
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