Deformation of lotus-type porous copper in rolling

Hiroshi Utsunomiya*, Tsuyoshi Yukimoto, Tetsuo Sakai, Shinsuke Suzuki, Hideo Nakajima

*Corresponding author for this work

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

2 Citations (Scopus)


Although forming of porous metal is demanded for industrial applications, the deformation characteristics have not been investigated sufficiently. In this study, lotus-type porous copper is processed by multi-pass cold rolling. At the early stage of rolling, the elongation of the porous copper in the rolling direction is small, and the porosity decreases almost linearly with the total reduction in thickness. It is found that pass schedule with small rolls and with small reduction per pass is effective to suppress pore closure. Hardness of the porous copper increases almost linearly with total reduction. If the effective total reduction is considered, the hardness change is similar to that of a nonporous copper.

Original languageEnglish
Title of host publicationEco-Materials Processing and Design XI, ISEPD-11
PublisherTrans Tech Publications Ltd
Number of pages4
ISBN (Print)0878492445, 9780878492442
Publication statusPublished - 2010
Externally publishedYes

Publication series

NameMaterials Science Forum
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752


  • Contact length
  • Effective strain
  • Pass schedule
  • Pore closure
  • Vickers hardness

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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