Formation of Deformation Twins and Related Shear Bands in Copper Single Crystals Pressed by ECAP

Takumi Ikeda; Hiroyuki Miyamoto; Toshiyuki Uenoya; Satoshi Hashimoto; Alexei Vinogradov

doi:10.4028/www.scientific.net/MSF.654-656.1231

Paper Titles

Grain Refinement and Texture Evolution during Equal Channel Angular Extrusion of Pure Cu and Cu-Zn Alloys
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Enhancing Ductility of ECAP Processed Metals
p.1219

Ultrafine Grained Structure Formation in Low Carbon Steel Processed by SPD
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Effects of Phase Transformation Temperature on Formation of Wear-Induced Layer in Fe-Ni Alloys
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Formation of Deformation Twins and Related Shear Bands in Copper Single Crystals Pressed by ECAP
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Susceptibility to Hydrogen Embrittlement of IF Steel with Ultrafine-Grained Structure Produced by Accumulative Roll-Bonding Process
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High Strength and Ductility in Ball-Milled Titanium Powders Consolidated by High-Pressure Torsion
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Aging Behavior of Al-Li-Cu-Mg Alloy Processed by High-Pressure Torsion
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Visualization and Quantification of Severe Internal Deformation on Compressive Torsion Process
p.1247

HomeMaterials Science ForumMaterials Science Forum Vols. 654-656Formation of Deformation Twins and Related Shear...

Formation of Deformation Twins and Related Shear Bands in Copper Single Crystals Pressed by ECAP

Abstract:

The pure copper single crystals with specific crystallographic orientated were subjected to ECAP for one pass at room temperature. Two types of shear bands were observed. Type 1 shear bands were constructed with clusters of distorting micro shear bands and matrix. Micro shear band and matrix were delineated by large-angle grain boundaries, and these two orientations are in a twinning relationship. Parallel sets of deformation twins were observed in the matrix. Type 2 shear bands had no crystallographic feature, and shear band and matrix were considered as low-angle grain boundaries. Deformation twin was not observed both in matrix and the shear bands.