Fabrication and mechanical properties of Lotus-type porous carbon steel by unidirectional solidification in nitrogen atmosphere

Makoto Kashihara*, Hirosi Yonetani, Takahiro Kobi, Soong Keun Hyun, Shinsuke Suzuki, Hideo Nakajima

*この研究の対応する著者

研究成果: Article査読

2 被引用数 (Scopus)

抄録

Lotus-type porous carbon steel (AISI 1018) whose long cylindrical pores are aligned in one direction was fabricated by unidirectional solidification in pressurized nitrogen gas. The ingots with the porosity from 10 to 30% were fabricated under the nitrogen gas pressure of 2.5 MPa at various transference velocities from 40 to 160 ,μm s-1. Tensile strength was measured for Lotus-type porous carbon steel. Elongation was improved due to normalizing at 1200K. The yield strength does not change even in lotus steel less than 20% in porosity. This superior property is attributed to nitrogen solid solution hardening and pore existence.

本文言語English
ページ(範囲)30-34
ページ数5
ジャーナルTetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
94
1
DOI
出版ステータスPublished - 2008
外部発表はい

ASJC Scopus subject areas

  • 凝縮系物理学
  • 物理化学および理論化学
  • 金属および合金
  • 材料化学

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