High-Temperature Severe Plastic Deformation of Ferritic Steel by Torsion

Abstract:

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An ultra-low carbon IF steel was heavily deformed up to an equivalent strain of 36 at various high temperatures of ferrite single-phase region and various strain rates. Effects of temperature and strain rate on the microstructures evolved in torsion deformation were clarified. On the other hand, it was found that homogeneous ultrafine grained structures were not obtained by the present torsion deformation though very high strain was applied. The coarser grain sizes than those obtained by conventional severe plastic deformation (like ARB) were due to the deformation at higher temperature and lower strain rate, but lower fraction of high-angle grain boundaries in the torsion specimen was suggested to be attributed to the characteristics of monotonic torsion (or simple shear) deformation including the way of strain evaluation.

Info:

Periodical:

Materials Science Forum (Volumes 667-669)

Edited by:

Jing Tao Wang, Roberto B. Figueiredo and Terence G. Langdon

Pages:

403-408

DOI:

10.4028/www.scientific.net/MSF.667-669.403

Citation:

A. Setiawan et al., "High-Temperature Severe Plastic Deformation of Ferritic Steel by Torsion", Materials Science Forum, Vols. 667-669, pp. 403-408, 2011

Online since:

December 2010

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Price:

$35.00

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