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

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

研究成果: Conference contribution

抄録

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.

本文言語English
ホスト出版物のタイトルEco-Materials Processing and Design VI - Proceedings of the 6th International Symposium on Eco-Materials Processing and Design, ISEPD-6
出版社Trans Tech Publications Ltd
ページ489-492
ページ数4
ISBN(印刷版)0878499660, 9780878499663
DOI
出版ステータスPublished - 2005 1月 1
イベント6th International Symposium on Eco-Materials Processing and Design, ISEPD-6 - Jinju, Korea, Republic of
継続期間: 2005 1月 162005 1月 18

出版物シリーズ

名前Materials Science Forum
486-487
ISSN(印刷版)0255-5476
ISSN(電子版)1662-9752

Other

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

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

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