Characterization on ferrite microstructure evolution during large strain warm torsion testing of plain low carbon steel
Eghbali, Beitallah, Abdollah-Zadeh, A., Beladi, Hossein and Hodgson, Peter 2006, Characterization on ferrite microstructure evolution during large strain warm torsion testing of plain low carbon steel, Materials science & engineering. A. Structural materials : properties, microstructure and processing, vol. 435-436, pp. 499-503, doi: 10.1016/j.msea.2006.07.026.
Attached Files
Name
Description
MIMEType
Size
Downloads
Title
Characterization on ferrite microstructure evolution during large strain warm torsion testing of plain low carbon steel
Ferrite grain/subgrain structures evolution during the extended dynamic softening of a plain low carbon steel was investigated throughout the large strain warm deformation by hot torsion. Microstructural analysis with electron back-scattering diffraction (EBSD) scanning electron microscope (FEG/SEM) was carried out on the ferrite microstructural parameters. The results showed that the warm flow stress–strain curves are similar to those affected only by dynamic softening and an extended warm flow softening is seen during large strain deformation up to 30. Furthermore, with an increase in strain up to ~ vert, similar1 the grain size of ferrite, misorientation angle and fraction of high-angle boundaries gradually decrease and fraction of low-angle boundaries increases. With a further increase in the strain beyond ~, vert, similar2, these parameters remain approximately unchanged. No evidence of discontinuous dynamic recrystallisation involving nucleation and growth of new grains was found within ferrite. Therefore, the dynamic softening mechanism observed during large strain ferritic deformation is explained by continuous dynamic recrystallization (CDRX).
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 drosupport@deakin.edu.au.