Grain size effect on behaviour and microstructure of a warm deformed Ti-IF steel
Oudin, Alexis, Barnett, Matthew and Hodgson, Peter 2003, Grain size effect on behaviour and microstructure of a warm deformed Ti-IF steel, Materials science forum, vol. 426, no. 432, pp. 1279-1284.
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Grain size effect on behaviour and microstructure of a warm deformed Ti-IF steel
The effect of grain size on the deformation behaviour in the fenite region of a Titanium stabilized Interstitial Free steel was investigated by hot torsion. The initial work hardening regime is followed by a softening regime where a broad peak stress develops. The peak stress and the stress at final strain were relatively insensitive to grain size. However, at low values of the Zener-Hollomon parameter, the strain to the peak stress was strongly dependent on the grain size. A series of microstructural parameters were examined to explain these observations.