Micromechanical mean-field analysis for stress-strain curve of lotus-type porous iron

M. Tane, S. K. Hyun, T. Ichitsubo, H. Nakajima

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

Abstract

We studied the plastic behavior of lotus-type porous iron with unidirectional long cylindrical pores. Lotus-type porous iron with different porosities was fabricated by the continuous zone melting method in a pressurized hydrogen and helium atmosphere. To calculate the stress-strain curves for lotus iron, we applied a modified Qiu-Weng's micromechanical mean-field theory that has recently been proposed by the present authors [J. Mater. Res., in press], and compared the results with those of compression tests. We experimentally found that the deformation resistance and work hardening rate depend on the sample porosity and loading direction. They decrease with an increase in porosity, and their values in the loading along the direction perpendicular to the longitudinal axis of pores are smaller than those in the parallel-direction loading. Our micromechanical calculations reproduce well the stress-strain curves experimentally obtained and express the experimental trends successfully.

Original languageEnglish
Title of host publicationEco-Materials Processing and Design VI - Proceedings of the 6th International Symposium on Eco-Materials Processing and Design, ISEPD-6
PublisherTrans Tech Publications Ltd
Pages489-492
Number of pages4
ISBN (Print)0878499660, 9780878499663
DOIs
Publication statusPublished - 2005 Jan 1
Event6th International Symposium on Eco-Materials Processing and Design, ISEPD-6 - Jinju, Korea, Republic of
Duration: 2005 Jan 162005 Jan 18

Publication series

NameMaterials Science Forum
Volume486-487
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Other

Other6th International Symposium on Eco-Materials Processing and Design, ISEPD-6
CountryKorea, Republic of
CityJinju
Period05/1/1605/1/18

Keywords

  • Eshelby's method
  • Iron
  • Mean-field theory
  • Porous metals
  • Stress-strain curve

ASJC Scopus subject areas

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

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