Fabrication of lotus-type porous carbon steel via continuous zone melting and its mechanical properties

M. Kashihara*, H. Yonetani, T. Kobi, S. K. Hyun, S. Suzuki, H. Nakajima

*この研究の対応する著者

研究成果査読

11 被引用数 (Scopus)

抄録

Lotus-type porous carbon steel (lotus carbon steel) AISI1018 rods with long cylindrical pores aligned in one direction were fabricated using the continuous zone melting technique under nitrogen gas pressure of 2.5 MPa. The porosity decreased with increasing transference velocities of 40-160 μm s-1. Tensile tests of the fabricated lotus-type carbon steel rods were performed. The elongation of lotus carbon steel increased after normalizing at 1200 K. The tensile strength and the Young's modulus decreased with increasing porosity. In contrast, the yield strength of lotus carbon steel did not decrease, even with a porosity of 20%, compared with that of non-porous carbon steel. This superior characteristic is attributed to solid-solution strengthening by solute nitrogen.

本文言語English
ページ(範囲)112-118
ページ数7
ジャーナルMaterials Science and Engineering A
524
1-2
DOI
出版ステータスPublished - 2009 10 25
外部発表はい

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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