Explaining the dilatometric behavior during bainite transformation under the effect of variant selection

The selection of crystallographic variants in bainitic microstructures is a deeply studied topic which can be attributed to several reasons. In the cases where prior austenite textured, stressed or plastically deformed, final ferrite texture and dilatometry signal may change, being anisotropic. Although causality between variant variation dilatometric has been previously assumed, it not thoroughly proved. this work, phenomenological theory martensite was combined with continuum mechanics analysis calculate relative length changes associated transformation during different transformations order prove connection distortion signal. To do so, four were analyzed: one them obtained by pure isothermal treatment rest ausforming treatments. Some mentioned had shown lead negative longitudinal signals present strong selection. Results showed that experimental trends could explained theoretical means, enables further understand transformation. • Negative observed Crystallographic calculations, including PTM analysis, performed. Calculations link distortion.