TY - JOUR
T1 - Factors influencing the shearing patterns in equal-channel angular pressing
AU - Furukawa, Minoru
AU - Horita, Zenji
AU - Langdon, Terence G.
N1 - Funding Information:
This work was supported in part by the Light Metals Educational Foundation of Japan and in part by the US Army Research Office under grant no. DAAD19-00-1-0488.
PY - 2002
Y1 - 2002
N2 - The shearing patterns are calculated for equal-channel angular pressing (ECAP) under three different conditions: (i) rotation of a sample around the X-axis when using a die angle of 90°, (ii) rotation around the X-axis when using a die angle of 120° and (iii) rotation around the Y- and Z-axes when using plate samples with a die angle of 90°. Separate sets of shearing patterns are constructed for the four standard processing routes: route A with no rotation of the sample between consecutive passes, routes BA and BC with rotations of 90° in alternate directions or the same direction between each pass, and route C with a rotation of 180° between passes. It is concluded that the development of a uniform microstructure of equiaxed grains, separated by high-angle grain boundaries, is favored using route BC because (i) shearing occurs over large angular ranges on the three orthogonal planes within the sample, (ii) there is a regular and periodic restoration of an equiaxed structure during consecutive pressing and (iii) deformation occurs on each orthogonal plane.
AB - The shearing patterns are calculated for equal-channel angular pressing (ECAP) under three different conditions: (i) rotation of a sample around the X-axis when using a die angle of 90°, (ii) rotation around the X-axis when using a die angle of 120° and (iii) rotation around the Y- and Z-axes when using plate samples with a die angle of 90°. Separate sets of shearing patterns are constructed for the four standard processing routes: route A with no rotation of the sample between consecutive passes, routes BA and BC with rotations of 90° in alternate directions or the same direction between each pass, and route C with a rotation of 180° between passes. It is concluded that the development of a uniform microstructure of equiaxed grains, separated by high-angle grain boundaries, is favored using route BC because (i) shearing occurs over large angular ranges on the three orthogonal planes within the sample, (ii) there is a regular and periodic restoration of an equiaxed structure during consecutive pressing and (iii) deformation occurs on each orthogonal plane.
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U2 - 10.1016/S0921-5093(01)01716-6
DO - 10.1016/S0921-5093(01)01716-6
M3 - Article
AN - SCOPUS:0036639226
SN - 0921-5093
VL - 332
SP - 97
EP - 109
JO - Materials Science and Engineering A
JF - Materials Science and Engineering A
IS - 1-2
M1 - 15373
ER -