Cold-Rolling and Annealing Textures in Fe-C Alloys

Abstract

Synopsis:The influence of carbon content on cold rolling and annealing textures of Fe-C alloys containing 0.003, 0.011, 0.021 wt%C has been studied. To avoid the effects of pre-existing grain boundary and texture, hot rolled sheets with coarse grain and random texture are used. The results obtained are as follows.(1) The structure and the texture of cold rolled sheet are largely affected by the amount of carbon in solution. When the amount of carbon in solution is small, sharp cell structure and rolling texture are formed. In the deformed grains with {111} planes parallel to sheet surface, crystal rotation from {111}<112> to {111}<110> around the <111>//N.D. axis is dominant.The main components of the annealing texture are {111}<112> and {111}<110>. When the amount of carbon in solution is large, cell structure and rolling texture are diffuse in the cold rolled sheet. In this case, crystal rotation from {111}<112> to {110}<001> around the <110>//T.D. axis is indicated to be dominant in the {111}<112> deformed matrix. The main component of the recrystallization texture is {110}<001>.(2) The effect of reducing carbon in solution by precipitation treatment before cold rolling on the formation of rolling and annealing textures is more important than that of the precipitated cementite itself.

Cold rolling and annealing textures in low carbon and extra low carbon steels

“…These are caused by: (a) e present in solid solution during cold rolling, [53][54][55][56] (b) e present in solid solution during annealing, [56][57][58][59] and (c) e present in combined form as cementite or pearlite before cold rolling. 54 ,55,6o Although there has been substantial progress in understanding the effect of C on annealing textures, controversy still exists over the respective contributions of the above factors, since they are sometimes difficult to separate experimentally.…”

“…wt-·' 53. Dependence of ' m on P content for steels with different carbide spacings and annealed at two different heating rates (after Ref 117).…”

Effects of Solute Carbon on the Work Hardening Behavior of Lath Martensite in Low-Carbon Steel

“…In addition, this tendency is in good agreement with previous reports that the formation of dislocation cells was much more clearly observed in ferrite with lower carbon content after severe cold-rolling. 29,30) 3.5. Dislocation Mobility and the Modified KME Model The relationship between F(Xc) used in the predictions and the solute carbon content, Xc, is presented in Fig.…”