INFLUENCE OF THERMAL TREATMENT ON THE MICROSTRUCTURAL STRUCTURE AND MECHANICAL PROPERTIES OF 110G13L STEEL

Abstract

Heat treatment of 110G13L steel plays a decisive role in ensuring its performance characteristics. High-manganese austenitic steel acquires the required properties only after quenching, carried out in the range of 1050–1150°C. The main purpose of heat treatment is to dissolve carbide phases, stabilize the austenitic structure, and improve mechanical properties. However, subsequent heating leads to the release of carbide compounds, which reduces the wear resistance of the steel. X-ray diffraction studies have revealed the presence of an α-phase at temperatures above 600°C, which confirms the phase transformations occurring during cooling. The effect of manganese on the microstructure of the steel was insignificant, while an increase in carbon contributes to an increase in strength properties. Casting defects, such as porosity and cracks, harm the mechanical properties of steel, especially under dynamic loads. Optimization of the chemical composition and alloying with elements such as chromium and vanadium can increase impact toughness and wear resistance. The introduction of modifiers improves the alloy structure, but industrial implementation of these methods requires additional study. Heat treatment remains a key stage in the production of products from 110G13L but does not eliminate casting defects, which requires further improvement of technological processes.