Cold-Rolling and Annealing Textures in Fe-C Alloys

Abstract

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.