Authors: Roohollah Jamaati Mohammad Reza Toroghinejad M A MohtadiBonab Hossein Edris Jerzy A Szpunar Mohammad Reza Salmani
Publish Date: 2014/09/16
Volume: 23, Issue: 12, Pages: 4436-4445
Abstract
In this study the evolution of deformation texture in steelbased nanocomposite fabricated via accumulative roll bonding ARB process was investigated Textural evolution during the ARB process was evaluated using xray diffraction It was found that with increasing number of ARB cycles first intensity of αfiber γfiber and θfiber decreased and then increased while ζfiber exhibited the opposite trend compared to these fibers Also there were texture transitions in εfiber and ηfiber It was realized that with increasing the number of ARB cycles volume fraction of lowangle grain boundary decreased and the fraction of highangle grain boundary increased In addition shear texture was predominant after first cycle while for other samples rolling texture was dominant When recrystallization occurred the intensity of ζfiber increased the intensity of αfiber and γfiber decreased and the intensity of 011〈100〉 orientation in εfiber and ηfiber remarkably increased Indeed the transition from rolling texture to shear texture was a sign of occurrence of discontinuous recrystallization after the first ARB cycle Moreover in the onecycle sample nucleation of discontinuous recrystallization had occurred Finally with increasing the number of cycles the intensity of rolling texture increased and the intensity of shear texture decreased
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