Cold Resistance of Structural Steel Subjected to Cold Radial Forging

Metal Science and Heat Treatment - The structure, the strength characteristics and the impact toughness at different temperatures up to –100°C of tubular billets from steel 35 are...     

Structural Aspects of Zones of Plastic Strain. Part III. Effect of Thermal Stability of Bands of Adiabatic Shear

Metal Science and Heat Treatment - The structure of initially high-tempered steel 09G2S (quenched and tempered at 650°C) is studied quantitatively inside the zone of plastic strain formed by...     

Structural and Fractographic Features of Formation of Splits in Low-Alloy Steel Subjected to Thermal Deformation Treatment

Metal Science and Heat Treatment - The structure and micromechanism of crack growth in steel 09G2S are studied after heat and thermal deformation treatments involving cold radial forging (CRF) with...     

Structure,Dynamic Cracking Resistance,and Crack Growth Micromechanism in Pipe Billets after Thermomechanical Treatment

The structure, dynamic cracking resistance, and micromechanisms of crack growth in initially highly tempered pipe billets made of structural carbon steel are studied after thermomechanical treatment, including cold plastic deformation by radial forging followed by annealing, under various conditions. The strength is found to be maximum after cold radial forging followed by annealing at 300°C. Cold radial forging and annealing at 600°C are shown to cause the formation of an ultrafine-grained structure with an average grain/subgrain size of ~900 nm. The structural features formed in both the axial and the transverse direction after cold radial forging have been revealed. The mechanism of crack growth after heat treatment and thermomechanical treatment has been studied. The fracture surface elements formed during dynamic-crackingresistance tests have been qualitatively analyzed.