EFFECT OF SUBMICRON-GRAIN STRUCTURE ON THE MECHANICAL-PROPERTIES OF LOW-CARBON STEELS

The development of modern branches of technology places ever higher re quirements on metals and alloys, i.e., they should have not only high- strength, but also have the required ductility and fracture toughness. The possibility is considered in this article of increasing the stren gth of low-alloy, low-carbon steels with retention of high toughness a nd ductility by methods of preparing a submicron-grain structure. Opti mum thermo-mechanical treatment schedules are suggested.