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Microstructure and mechanical properties of copper processed by twist extrusion with a reduced twist-line slope
, Article Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science ; Vol. 45, issue. 4 , 2014 , pp. 2232-2241 ; Online ISSN: 1543-1940 ; Yoon, E. Y ; Lee, D. J ; Kulagin, R ; Beygelzimer, Y ; Seyed Salehi, M ; Kim, H. S ; Sharif University of Technology
Abstract
Pure copper processed by a twist extrusion process with a reduced twist-line slope is investigated. Twist extrusion is a severe plastic deformation technique which is promising for scale-up because it allows for processing of relatively large metallic bars. On the way to commercialization, decreasing costs associated with processing is critical for twist extrusion. As one of the measures, reducing the twist-line slope - an important geometrical feature of twist extrusion - can be advantageous in terms of processing costs. The current study seeks to elucidate effects of reducing the twist-line slope on the microstructure, mechanical properties, and their heterogeneity in the processed metal,...