Microstructural development during warm rolling of an IF steel
- Univ. of Sheffield (United Kingdom). Dept. of Engineering Materials
Wedge-shaped slab rolling was employed to investigate the microstructural evolution of an interstitial-free (IF) steel during warm working in the temperature range 500--800 C. Mean flow stress-strain curves calculated from load-time data of rolling tests reasonably correspond to work hardening and dynamic recovery behavior. The development of substructures in the deformed material was investigated using optical and electron microscopy. A close correlation was observed between mechanical behavior and microstructural development during deformation. Microbands in directions of {+-} 35{degree} with respect to the rolling direction, independent of strain, temperature and initial grain orientations are the most noticeable features in the microstructural observations. The sequences of substructural changes from the appearance of early microbands at very low strains, their development with strain, to the formation of equiaxed subgrains at higher strains and temperatures were followed by TEM.
- OSTI ID:
- 599705
- Journal Information:
- Acta Materialia, Vol. 45, Issue 12; Other Information: PBD: Dec 1997
- Country of Publication:
- United States
- Language:
- English
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