An experimental study of the mean effective strain in rod (or bar) rolling process

This paper presents an experimental study that investigates the validity of the analytical model [9] for predicting the mean effective strains associated with bar (or rod) rolling. Designed for this purpose were plate and bar rolling experiments which consist of a four-pass groove (oval and round) rolling sequences, which have material at each pass that experience the same amount of mean effective strain. The microstructure and mechanical behaviors of specimens acquired from two types of rolling experiments at 650 degreesC were compared. A parallelism between the mechanical behaviors of a plate-rolled specimen and a bar-rolled specimen has been found at each pass. We therefore concluded that the analytical model has the underlying rationale to be used in the analysis of the rod (or bar) rolling process.