Abstract
We study the impact toughness of three batches of Charpy specimens cut out from the rollers of continuous-casting machines. We determine the stages of dynamic deformation and fracture of bimetallic and monometallic specimens on the micro-, meso-, and macrolevels. With the help of scanning and transmission microscopies, we study the specific features of the micromechanisms of plastic deformation and fracture for steels with ferrite-pearlite (35G2) and ferrite-martensite (18Kh11MNFB) structures. In addition, we analyze their impact toughness with regard for these features.
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