Evolution of texture in a magnesium alloy processed by ECAP through dies with different angles

Download
Author
Figueiredo, Roberto B.
Beyerlein, Irene J.
Zhilyaev, Alexander P.
Langdon, Terence G.
Date
2010Metadata
Show full item recordAbstract
A fine-grained magnesium ZK60 alloy was used to study texture evolution during processing by equal channel angular pressing. Experiments were conducted by pressing the alloy through dies having angles of 90◦, 110◦ and 135◦ and the textures were predicted using a visco-plastic self-consistent model. It is shown that the development of texture depends upon the channel angle within the die. Calculations indicate that, after basal a slip, there is significant prismatic a slip and pyramidal a slip activity during ECAP in all cases. This is a unique result attributed to the fine grain size and severe plastic deformation. The simulations also reveal evidence of geometrical softening in the first stage of deformation when using dies having channel angles of 90◦ and 110◦.
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.Collections
Related items
Showing items related by title, author, creator and subject.
-
Spectral dependence of texture features integrated with hyperspectral data for area target classification improvement
Bangs, Corey F.; Kruse, Fred A.; Olsen, Chris R. (SPIE, 2013);Hyperspectral data were assessed to determine the effect of integrating spectral data and extracted texture feature data on classification accuracy. Four separate spectral ranges (hundreds of spectral bands total) were ... -
Improving Identification of Area Targets by Integrated Analysis of Hyperspectral Data and Extracted Texture Features
Bangs, Corey F. (Monterey, California. Naval Postgraduate School, 2012-09);Hyperspectral data were assessed to determine the effect of integrating spectral data and extracted texture features on classification accuracy. Four separate spectral ranges (hundreds of spectral bands total) were used ... -
Sea ice classification using synthetic aperture radar
Garcia, Frank W., Jr. (Monterey, California: Naval Postgraduate School, 1990-06);This study employs Synthetic Aperture Radar (SAR) imagery from the Marginal Ice Zone Experiment (MIZEX) 1987 to identify an optimal set of statistical descriptors that accurately classify three types of ice (first-year, ...