The initial orientation has split into two equally strong symmetric orientations:
(112)[111¯] and (112)[1¯1¯1]. Areas of identical orientation were band shaped and were
called deformation bands. Up to 60% reduction, deformation occurs by slip on one
plane (one from two possible) in two directions. This leads to the appearance of
deformation bands with transition bands between them. Due to such deformation the
initial orientation rotates around transverse direction towards the end-orientation
{112}〈111〉. Due to rotation of the crystallographic lattice with deformation, the
Taylor factor M changes as well, and it causes the activation of two not coplanar slip
systems which stabilize the end-orientations {112}〈111〉. Such a sequence of the slip
systems activation was concluded from the agreement of the calculated and
experimental pole figures. The electron microscopy investigations showed that first
shear bands formed due to the activation of these new slip systems.
Copyright
Copyright © 1988 Hindawi Publishing Corporation. This is an open access article distributed under the
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