The distribution of carbon in steels
G.V. Kurdyumov Institite of Metal Science and Physics, State Research Centre of the Russian Federation, I.P. Bardin Central Research Institute of Ferrous Metallurgy, 2-ya Baumanskaya ul. 9/23, Moscow, 105005, Russian Federation
The nature and characteristics of the way carbon present in steel is distributed spatially and over states may be related to quasichemical ’reactions’ that lead to the formation in austenite (γ-Fe — C) and ferrite (α-Fe — C) of ’carbo-austenite’ and ’carbo-ferrite molecules’ (nanocomplexes) consisting, along with C atoms, of, respectively, γ-Fe or α-Fe and of octahedral γ- or α-interstitials. In this way, various aspects of the quasichemical dissolution and diffusion ’reactions’ of carbon in the material can be determined, as can the quasichemical component of the martensite transformation (MT) mechanism in carbon steels.