Paper Title:
The Effect of the Initial Orientation on Microstructure Development of Copper Single Crystals Subjected to Equal-Channel Angular Pressing
  Abstract

Copper single crystals were subjected to equal-channel angular pressing (ECAP) via the so-called route A and Bc, in order to examine the influence of initial crystallographic orientation and processing route on microstructure development and grain fragmentation. Microstructural changes were examined by transmission electron microscopy (TEM). The pressing via the route Bc resulted in finer microstructure for all orientations in terms of grain size, equiaxiality and orientation scattering after four passes. Effect of initial crystallographic orientation on the grain refinement was also recognized, and it might be attributed to heterogeneous deformation such as shear bands, whose formation is strongly orientation dependent. After eight passes, however, the effect of processing route and initial orientation cannot be recognized.

  Info
Periodical
Materials Science Forum (Volumes 503-504)
Edited by
Zenji Horita
Pages
799-804
DOI
10.4028/www.scientific.net/MSF.503-504.799
Citation
H. Miyamoto, J. Fushimi, T. Mimaki, A. Vinogradov, S. Hashimoto, "The Effect of the Initial Orientation on Microstructure Development of Copper Single Crystals Subjected to Equal-Channel Angular Pressing", Materials Science Forum, Vols. 503-504, pp. 799-804, 2006
Online since
January 2006
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