High-Temperature Severe Plastic Deformation of Ferritic Steel by Torsion

Aries Setiawan; Daisuke Terada; Nobuhiro Tsuji

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

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Microstructural Evolution of Mg-4Nd Alloy Processed by High-Pressure Torsion
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HomeMaterials Science ForumMaterials Science Forum Vols. 667-669High-Temperature Severe Plastic Deformation of...

High-Temperature Severe Plastic Deformation of Ferritic Steel by Torsion

Abstract:

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.

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Materials Science Forum (Volumes 667-669)

Pages:

403-408

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.667-669.403

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Online since:

December 2010

Authors:

Aries Setiawan, Daisuke Terada, Nobuhiro Tsuji

Keywords:

Grain Refinement, Grain Subdivision, High-Angle Grain Boundary (HAGB), Shear Strain

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