The paper investigates the effect of multi-stage heat treatment modes on the microstructure and performance characteristics of modified 35KhML (35XMA) chromium-molybdenum steel. It was established that the application of a complex nano-modifier, combined with optimized double-stage tempering (600-650 °C), facilitates the transformation of a course as-cast structure into fine-dispersed sorbite. Particular attention is paid to the morphology of carbide phases and their role in preventing temper embrittlement. The results demonstrated a 45 % increase in impact toughness and a 20 % reduction in the abrasive wear rate.
Ubaydullaev et al. (Mon,) studied this question.