Abstract
The effect of heating temperature and deformation during hot rolling on the microstructure and mechanical properties of steel grade 07Kh12NMFB (0.07C–12Cr–Ni–Mo–V–Nb) are studied. It is established that a change in the plastic deformation regime, without having a significant effect on strength properties, leads to significant changes in steel impact strength. No effect of hot rolling production parameters on steel microstructure after the final heat treatment is detected. Based on research results a heating temperature up to 1150 °C for rolling steel grade 07Kh12NMFB and deformation of not less than 25% are recommended.
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