Mohammad Masoumi
Universidade Federal do Ceará, Brazil
Title: The evolution of texture and grain orientation in an experimental duplex stainless steel during cold and hot rolling
Biography
Biography: Mohammad Masoumi
Abstract
The texture evolutions in duplex stainless steels are affected by two mechanisms, plastic deformation and martensitic phase transformation. In this work, the texture evolutions during hot and cold rolling was investigated as a function of thickness reduction in an experimental duplex stainless steel to describe the phase transformation and crystallographic orientation changes for a better understanding of the interaction between the phase transformation and deformation texture. The bcc martensite showed the dominant {100}//ND and {110}//ND components. The dominance of the {100}//ND components were ascribed mainly to martensitic transformation following Bain's model. Also, kernel average misorientation increases significantly due to the increase in strain and a decrease in deformation temperature. Also, the internal grain structure becomes more inhomogeneous with the dislocation piles up and preventing dislocation movements.