Austenite Stability and Wear Resistance of High-Manganese Steels

Purpose. Classification of wear-resistant components used in metallurgical equipment by category and optimization of high-manganese steel selection. Design / Method / Approach. The study was conducted on steels produced in induction furnaces with water quenching at 1050 °C. Samples of 5 × 3 × 3 mm³ were subjected to slow plastic deformation by compression. The degree of deformation was determined by the ratio of the sample thickness before and after deformation. The magnetic state was evaluated by the magnetometric method using a Faraday balance. Findings. At 20–30% deformation, 110Mn8 formed 2.787 vol.% α′-martensite, 110Mn10 – 0.263 vol.%, 110Mn13 – 0.107 vol.%, and 110Mn18 – 0.006 vol.%. Steels 110Mn8 and 110Mn10 exhibit low austenite stability, while 110Mn13 and 110Mn18 are metastable. A classification of parts by operating conditions was proposed: I – especially critical purpose (110Mn13, 110Mn18), II – critical purpose (110Mn10), III – general purpose (110Mn8). Theoretical Implications. The study enhances understanding of the role of martensitic transformation in the wear resistance of high-manganese steels and clarifies the relationship between chemical composition and austenite stability. Practical Implications. The classification enables optimized steel selection for parts based on operating conditions, reducing material costs and improving equipment reliability. Originality / Value. This is the first study to propose a classification of metallurgical equipment parts by categories, considering austenite stability, facilitating rational material selection. Research Limitations / Future Research. Future research should explore the effects of additional alloying elements and compare them with other deformation types. Article Type. Empirical.