Patterns of austenite formation processes for low-carbon martensitic steels in intercritical interval of temperatures
By methods of differential scanning calorimetry it was shown that austenite formation process for 07X3GNM low-carbon martensitic steels goes in two stages. The first stage is connected with transformation of perlite into austenite (А<sub>С1 </sub>point). The second - with the transformations of different morphological forms of clamped martensite (ferrite matrix) into austenite along the borders and in volume of initial crystallites.