The article represents the results of investigation of combined thermomechanical processing effects on the steel strength properties. Methods of thermomechanical processing include forging, torsion, and equal channel angular pressing (ECAP) with various types of thermal processing. The results of investigation of the strength and plasticity of low-carbon steel subjected to ECAP, forging, and torsion are given, as well as results of fracture toughness tests in conditions of normal and low temperatures.
The study of the steel plasticity properties was carried out with the use of the developed experiment-calculated technique based on thermovision method of the specimen surface temperature measurement and solution of inverse problem of thermal conductivity with constant coefficients.
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