TY - JOUR
T1 - Microstructure and mechanical properties of copper processed by twist extrusion with a reduced twist-line slope
AU - Latypov, Marat I.
AU - Yoon, Eun Yoo
AU - Lee, Dong Jun
AU - Kulagin, Roman
AU - Beygelzimer, Yan
AU - Seyed Salehi, Majid
AU - Kim, Hyoung Seop
N1 - Funding Information:
This work was supported by the Grant from the Ukraine-Korea joint research project (2001-019214) funded by the National Research Foundation, Korea and joint research project (M386-2011) funded by the State Agency for Science, Innovation and Information of Ukraine.
PY - 2014/4
Y1 - 2014/4
N2 - 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, which were unclear because most of the previous research has focused on twist extrusion with high twist-line slopes (e.g., 60 deg). Results of the present study suggest that reducing the twist-line slope moderates grain refinement and limits improvement of mechanical properties of the twist-extruded metal. These findings are discussed in terms of the shear strain reversal which is inherent in the process.
AB - 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, which were unclear because most of the previous research has focused on twist extrusion with high twist-line slopes (e.g., 60 deg). Results of the present study suggest that reducing the twist-line slope moderates grain refinement and limits improvement of mechanical properties of the twist-extruded metal. These findings are discussed in terms of the shear strain reversal which is inherent in the process.
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U2 - 10.1007/s11661-013-2165-1
DO - 10.1007/s11661-013-2165-1
M3 - Article
AN - SCOPUS:84899118384
SN - 1073-5623
VL - 45
SP - 2232
EP - 2241
JO - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
JF - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
IS - 4
ER -