TY - GEN
T1 - Equal-channel angular extrusion of lotus-type porous copper
AU - Suzuki, S.
AU - Nakajima, H.
AU - Utsunomiya, H.
PY - 2008/11/27
Y1 - 2008/11/27
N2 - Deformation behavior of lotus-type porous copper with long cylindrical pores aligned in one direction through ECAE (Equal-Channel Angular Extrusion) process was investigated with using dies with channel angles 90° and 150°. The lotus-copper rod was densified by the uni-axial compression in the entry channel, and the pores were thinned and elongated by shearing at the corner of the 90°-die. The inclination angle of the elongated thinned pores can be explained by a geometric deformation model considering the densification. After the second path of the ECAE the pores were either further thinned and elongated or opened again according to the pass route. Extrusion through the 150°-die changed the pore morphologies little. The Vickers hardness increased through the ECAE process. It was found from these results that it may be possible to improve the mechanical properties of the metallic parts of porous metals and to control the pore morphology by means of the ECAE process.
AB - Deformation behavior of lotus-type porous copper with long cylindrical pores aligned in one direction through ECAE (Equal-Channel Angular Extrusion) process was investigated with using dies with channel angles 90° and 150°. The lotus-copper rod was densified by the uni-axial compression in the entry channel, and the pores were thinned and elongated by shearing at the corner of the 90°-die. The inclination angle of the elongated thinned pores can be explained by a geometric deformation model considering the densification. After the second path of the ECAE the pores were either further thinned and elongated or opened again according to the pass route. Extrusion through the 150°-die changed the pore morphologies little. The Vickers hardness increased through the ECAE process. It was found from these results that it may be possible to improve the mechanical properties of the metallic parts of porous metals and to control the pore morphology by means of the ECAE process.
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M3 - Conference contribution
AN - SCOPUS:56549126379
SN - 9781932078282
T3 - MetFoam 2007 - Proceedings of the 5th International Conference on Porous Metals and Metallic Foams
SP - 205
EP - 208
BT - MetFoam 2007 - Proceedings of the 5th International Conference on Porous Metals and Metallic Foams
T2 - 5th International Conference on Porous Metals and Metallic Foams, MetFoam 2007
Y2 - 5 September 2008 through 7 September 2008
ER -