TY - JOUR
T1 - An investigation of the deformation process during equal-channel angular pressing of an aluminum single crystal
AU - Furukawa, Minoru
AU - Kawasaki, Yoshiyasu
AU - Miyahara, Yuichi
AU - Horita, Zenji
AU - Langdon, Terence G.
N1 - Funding Information:
This work was supported in part by a grant-in-aid for scientific research from the Ministry of Education, Science, Sports and Culture of Japan, in part by the Light Metals Educational Foundation of Japan and in part by the National Science Foundation of the United States under grant no. DMR-0243331.
PY - 2005/11/25
Y1 - 2005/11/25
N2 - This investigation examines the deformation process when an aluminum single crystal is subjected to equal-channel angular pressing (ECAP) using a die having a channel angle of 90°. The crystal within the entrance channel was oriented so that the {1 1 1} slip plane and the 〈1 1 0〉 slip direction were inclined at 20° in a counter-clockwise direction from the theoretical shear plane and the theoretical shear direction. The crystal was pressed through one pass at room temperature and then carefully examined. After passing through the shear plane, it is shown that the initial orientation remains in the upper portion of the specimen within the exit channel but there is a rotation by ∼60° in a counter-clockwise direction near the lower die wall. These observations show that shear occurs in the upper portion of the specimen but there is a rotation in the lower portion due to the arc of curvature at the outer point of intersection of the two channels.
AB - This investigation examines the deformation process when an aluminum single crystal is subjected to equal-channel angular pressing (ECAP) using a die having a channel angle of 90°. The crystal within the entrance channel was oriented so that the {1 1 1} slip plane and the 〈1 1 0〉 slip direction were inclined at 20° in a counter-clockwise direction from the theoretical shear plane and the theoretical shear direction. The crystal was pressed through one pass at room temperature and then carefully examined. After passing through the shear plane, it is shown that the initial orientation remains in the upper portion of the specimen within the exit channel but there is a rotation by ∼60° in a counter-clockwise direction near the lower die wall. These observations show that shear occurs in the upper portion of the specimen but there is a rotation in the lower portion due to the arc of curvature at the outer point of intersection of the two channels.
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U2 - 10.1016/j.msea.2005.08.082
DO - 10.1016/j.msea.2005.08.082
M3 - Article
AN - SCOPUS:28944431925
SN - 0921-5093
VL - 410-411
SP - 194
EP - 200
JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
ER -