THE IMPACT OF AUSTENITIZATION TEMPERATURE ON A STRUCTURES FORMATION UNDER CONTINUOUS COOLING OF THE CHROMO-MOLYBDENUM STEEL

Abstract

The impact of the austenite grain growth of chromo-molybdenum steel on the kinetics of structural decomposition under continuous cooling was studied. It is shown that when the grain is enlarged with an increase in the austenitization temperature from 850 till 1050 °C, the stability of the supercooled austenite in the structure of the chromo-molybdenum steel during the decay process by the intermediate and shear mechanism increases, which contributes to a decrease in the critical quenching rate.

Keywords

• chrome-molybdenum steel
• austenitization
• temperature
• grain size
• cooling
• structure