Deformation and Fracture Behaviors of Spheroidized Pearlitic Steel under Tensile Loading

The deformation and fracture behavior in spheroidized pearlitic steels were investigated using digital image correlation the replica methods, origin of inhomogeneous strain distribution its effect on discussed. cementite roundness increased while area fraction within a colony decreased with increasing spheroidization time. Many coarse cementites observed block boundaries, which explains decrease colony. strength–ductility balance deteriorated spheroidization. unit was introduced by tensile steels. numerous voids or cracks detected at low- high-angle boundaries inside ferrite ferrite/cementite boundary tended to nucleate from high-strain region. deformability depended progress spheroidization, crystallographic orientation relationship between could affect ease gradient soft hard phases induced void crack nucleation around boundary; hence, It can be concluded that results an distribution, causes preferential