Av. Korznikov et al., HIGH-STRENGTH STATE IN LOW-CARBON STEEL WITH SUBMICRON FIBROUS STRUCTURE, Materials science & engineering. A, Structural materials: properties, microstructure and processing, 206(1), 1996, pp. 39-44
The formation of a submicron fibrous (SMF) structure in low carbon low
alloy steels under severe warm rolling is investigated. It is shown t
hat by varying modes of deformation one can obtain structures with eit
her equilibrium or nonequilibrium grain boundaries (GBs). It is establ
ished that SMF structure provides for a sharp increase in strength pro
perties (by a factor of 23) as compared to those of coarse-grained mat
erial. An analysis of this effect based on Hall-Patch relation models
is given.