Equal-channel angular extrusion process of lotus-type porous copper

Shinsuke Suzuki, H. Utsunomiya, H. Nakajima

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Deformation behavior of lotus-type porous copper with long cylindrical pores aligned in one direction through equal-channel angular extrusion (ECAE) process was investigated 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. From these results we found that it may be possible to improve the mechanical properties of porous metals and to control the pore morphology by means of the ECAE process.

Original languageEnglish
Pages (from-to)465-470
Number of pages6
JournalMaterials Science and Engineering A
Volume490
Issue number1-2
DOIs
Publication statusPublished - 2008 Aug 25
Externally publishedYes

Fingerprint

Extrusion
Copper
porosity
copper
Axial compression
Vickers hardness
Densification
Shearing
densification
shearing
entry
Metals
inclination
rods
Mechanical properties
routes
mechanical properties
metals

Keywords

  • Densification
  • Equal-channel angular extrusion
  • Lotus-type porous copper
  • Porous metals
  • Vickers hardness

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Equal-channel angular extrusion process of lotus-type porous copper. / Suzuki, Shinsuke; Utsunomiya, H.; Nakajima, H.

In: Materials Science and Engineering A, Vol. 490, No. 1-2, 25.08.2008, p. 465-470.

Research output: Contribution to journalArticle

Suzuki, Shinsuke ; Utsunomiya, H. ; Nakajima, H. / Equal-channel angular extrusion process of lotus-type porous copper. In: Materials Science and Engineering A. 2008 ; Vol. 490, No. 1-2. pp. 465-470.
@article{669363b4e3674ccaab94eb1d7364eaea,
title = "Equal-channel angular extrusion process of lotus-type porous copper",
abstract = "Deformation behavior of lotus-type porous copper with long cylindrical pores aligned in one direction through equal-channel angular extrusion (ECAE) process was investigated 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. From these results we found that it may be possible to improve the mechanical properties of porous metals and to control the pore morphology by means of the ECAE process.",
keywords = "Densification, Equal-channel angular extrusion, Lotus-type porous copper, Porous metals, Vickers hardness",
author = "Shinsuke Suzuki and H. Utsunomiya and H. Nakajima",
year = "2008",
month = "8",
day = "25",
doi = "10.1016/j.msea.2008.02.044",
language = "English",
volume = "490",
pages = "465--470",
journal = "Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing",
issn = "0921-5093",
publisher = "Elsevier BV",
number = "1-2",

}

TY - JOUR

T1 - Equal-channel angular extrusion process of lotus-type porous copper

AU - Suzuki, Shinsuke

AU - Utsunomiya, H.

AU - Nakajima, H.

PY - 2008/8/25

Y1 - 2008/8/25

N2 - Deformation behavior of lotus-type porous copper with long cylindrical pores aligned in one direction through equal-channel angular extrusion (ECAE) process was investigated 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. From these results we found that it may be possible to improve the mechanical properties 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 equal-channel angular extrusion (ECAE) process was investigated 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. From these results we found that it may be possible to improve the mechanical properties of porous metals and to control the pore morphology by means of the ECAE process.

KW - Densification

KW - Equal-channel angular extrusion

KW - Lotus-type porous copper

KW - Porous metals

KW - Vickers hardness

UR - http://www.scopus.com/inward/record.url?scp=45249111547&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=45249111547&partnerID=8YFLogxK

U2 - 10.1016/j.msea.2008.02.044

DO - 10.1016/j.msea.2008.02.044

M3 - Article

VL - 490

SP - 465

EP - 470

JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing

JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing

SN - 0921-5093

IS - 1-2

ER -