Controlling the Content and Morphology of Phase Constituents in Nanobainitic Steel Containing 0.6%C to Obtain the Required Ratio of Strength to Plasticity

The phase composition of nanobainitic steel 0.56–0.60%C, 1.68–1.95%Mn, 1.58–1.80%Si, 1.30–1.47%Cr, 0.57–0.75%Mo is described in this paper. controlled order to obtain diversified mechanical properties for specific applications, such as armor plates. effect temperature and time isothermal heat treatment on both the microstructure were determined. Dilatometric studies, well measurements volume fraction size distribution retained austenite carried out. Analysis kinetics transformation range 200–225 °C times up 144 h also out, parameters production process A consisting nanolathy carbideless bainite blocky lathy austenite, providing tensile strength at least 2000 MPa, yield 1300 total elongation 10% has been found.