EFFECT OF SEMIFINISHED ROLLED PRODUCT COOLING RATE DURING CONTROLLED ROLLING ON THE CONDITION OF MICROALLOYED STEEL HOT-WORKED AUSTENITE, FINAL MICROSTRUCTURE, AND MECHANICAL PROPERTIES. PART 2. STUDY OF THE EFFECT OF SEMIFINISHED ROLLED PRODUCT COOLING RATE ON FERRITE-BAINITE STRUCTURE FORMATION

摘要

The effect of cooling rate is studied under laboratory conditions for semifinished rolled product in a temperature range of the order of 1000–850°C using controlled rolling technology on the condition of hot-worked austenite, grain refinement in the final microstructure, and set of mechanical properties for low-carbon microalloyed steel.