METHOD OF EVALUATION OF TECHNOLOGICAL PARAMETERS FOR STABILITY of supercooled austenite

摘要

1. A method of evaluating the influence of process parameters on the stability of supercooled austenite and the low-alloy steels of medium, comprising: heating a sample up to a temperature of formation of austenite, followed by cooling, metering hardness along the length of the sample at two diametrically opposite surfaces of grinding, building and analysis of the hardness distribution curve, wherein that the sample is in the austenitic state is subjected to thermo-deformation effects of and subsequent quenching space-end face, and edited by neniyu position distribution curves of hardness after exposure to the sample assess the influence of process parameters on the stability of the supercooled austenite, with the sample bar is selected as a length of at least 50 ÷ 55 mm and a side length of a cross section of at least 7 ÷ 8 mm.2. A method according to claim 1, characterized in that the heating of the specimen to austenite condition is performed at a predetermined speed selected to austenitizing temperature.