Influence of Processing Parameters on Texture and Microstructure in Aluminum after ECAP
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Authors
Zhilyaev, A.P.
Oh-ishi, K.
Raab, G.I.
McNelley, T.R.
Subjects
Equal Channel Angular Pressing
Aluminum
Microtexture
Grain refinement
Orientation Imaging Microscopy
Aluminum
Microtexture
Grain refinement
Orientation Imaging Microscopy
Advisors
Date of Issue
2006
Date
Publisher
Trans Tech Publications
Language
Abstract
The influence of strain path during equal-channel angular pressing (ECAP) has been evaluated in pure aluminum by orientation imaging microscopy (OIM) and transmission electron microscopy (TEM). The material was examined after four pressing operations by route BC in a 90° die, or eight pressing operations by route BC in a 135° die. The von Mises equivalent strains were essentially the same for these two ECAP procedures. The microtexture data indicate that the distortion during ECAP corresponds to a simple shear in a direction approximately parallel to diechannel exit and on a plane perpendicular to the flow plane. For both procedures the OIM data reveal prominent meso-scale band-like features. Lattice orientations in each band correspond to a texture orientation but the particular combinations of orientations depend upon ECAP die angle. High-angle boundaries in the structure correspond to interfaces between the bands.
Type
Article
Description
The article of record as published may be found at http://dx.doi.org/10.4028/www.scientific.net/MSF.503-504.65
Series/Report No
Department
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
National Research Council of the National Academy of Science
Funder
Format
7 p.
Citation
Zhilyaev, Alexandre P., et al. "Influence of processing parameters on texture and microstructure in aluminum after ECAP." Materials Science Forum. Vol. 503. Trans Tech Publications, 2006.
Distribution Statement
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.