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

Abstract:

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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.

Info:

Periodical:

Materials Science Forum (Volumes 654-656)

Main Theme:

Edited by:

Jian-Feng Nie and Allan Morton

Pages:

1231-1234

DOI:

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

Citation:

T. Ikeda et al., "Formation of Deformation Twins and Related Shear Bands in Copper Single Crystals Pressed by ECAP", Materials Science Forum, Vols. 654-656, pp. 1231-1234, 2010

Online since:

June 2010

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$35.00

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