Исследование влияния технологии термомеханического упрочнения проката на комплекс структурных составляющих и прогнозирование механических свойств

Abstract

In article are described the production technology of the thermostrengthened fittings from rolling heating and results of the carried-out accelerated cooling and thermal hardening of rebar of Ø 12 mm on the class A500C from St3trps steel in a stream of a light section mill 250-4 PJSC "Arselor Mittal Krivoi Rog". It is established that at a surface the microstructure of metal consists of the released martensite, the rim with structure of the released martensite is followed by a transitional zone with structure of lowtemperature bainite with parts of troostite