Equal-channel angular extrusion of lotus-type porous copper

S. Suzuki, H. Nakajima, H. Utsunomiya

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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.

Original languageEnglish
Title of host publicationMetFoam 2007 - Proceedings of the 5th International Conference on Porous Metals and Metallic Foams
Pages205-208
Number of pages4
Publication statusPublished - 2008 Nov 27
Event5th International Conference on Porous Metals and Metallic Foams, MetFoam 2007 - Montreal, QC, Canada
Duration: 2008 Sep 52008 Sep 7

Publication series

NameMetFoam 2007 - Proceedings of the 5th International Conference on Porous Metals and Metallic Foams

Other

Other5th International Conference on Porous Metals and Metallic Foams, MetFoam 2007
CountryCanada
CityMontreal, QC
Period08/9/508/9/7

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ASJC Scopus subject areas

  • Metals and Alloys

Cite this

Suzuki, S., Nakajima, H., & Utsunomiya, H. (2008). Equal-channel angular extrusion of lotus-type porous copper. In MetFoam 2007 - Proceedings of the 5th International Conference on Porous Metals and Metallic Foams (pp. 205-208). (MetFoam 2007 - Proceedings of the 5th International Conference on Porous Metals and Metallic Foams).