Influential factors on the deformability of colonies in pearlitic steel

The inhomogeneous strain distribution introduced by the tensile deformation of pearlitic steel was visualized using digital image correlation method, and morphology cementite quantitatively evaluated. high near block boundaries. Within blocks, inhomogeneously distributed. ratio (Lcem/Lcol) length to colony size, which is related degree spheroidization, well correlated with average within colonies; spheroidized colonies exhibited a relatively strain. However, although Lcem/Lcol values were nearly identical, largely dispersed in colonies. Based on values, classified as spheroidized, partially-spheroidized, lamellar In majority colonies, lower than tended be higher located On other hand, for partially-spheroidized varied considerably sufficiently Schmid factor (SFLF_min) slip system, where dislocations can glide long distances without interrupting plate. Additionally, difficulty propagation across boundaries found affect deformability highest among three types not distance from boundary or SFLF_min. Therefore, it concluded that spheroidization main influence steel. Meanwhile, SFLF_min, boundary, affected causing variation value equal values.