Formation of ultrafine ferrite by dynamic strain-induced transformation
Beladi, H., Hodgson, P. D. and Adachi, Y. 2008, Formation of ultrafine ferrite by dynamic strain-induced transformation, in MS & T 2008 : Materials Science & Technology Conference and Exhibition : October 5-9, 2008, David L. Lawrence Convention Center, Pittsburgh, Pennsylvania : conference proceedings, Materials Science & Technology Conference, Warrendale, Pa., pp. 1756-1763.
(Some files may be inaccessible until you login with your DRO credentials)
In the current study, the role of dynamic strain induced transformation on ferrite grain refinement was investigated using different thermomechanical processing routes. A Ni-30Fe austenitic model alloy was also employed to study the evolution of the deformation structure under different deformation conditions. It was shown that the extreme refinement of ferrite is more likely due to the formation of extensive high angle intragranular defects in the austenite through deformation. Among the different thermomechanical parameters, the deformation temperature had a significant effect on the intragranular defect characteristics. There was a transition where the cell dislocation structure changed to laminar microband structures with a decrease in the deformation temperature. Moreover, the ultrafine grained structure was also successfully produced through static transformation using warm deformation process; in other words, concurrent deformation and transformation are not necessary for ultrafine ferrite formation.
Unless expressly stated otherwise, the copyright for items in DRO is owned by the author, with all rights reserved.
Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO.
If you believe that your rights have been infringed by this repository, please contact firstname.lastname@example.org.