Fabrication of lotus-type porous carbon steel slabs by continuous casting technique in nitrogen atmosphere

Makoto Kashihara*, Shinsuke Suzuki, Yuki Kawamura, Sang Youl Kim, Hiroshi Yonetani, Hideo Nakajima

*この研究の対応する著者

研究成果査読

7 被引用数 (Scopus)

抄録

Lotus-type porous carbon steel slabs with long cylindrical pores aligned in one direction were fabricated by the continuous casting technique in a mixture gas of N2 0.8 MPa and Ar 1.7 MPa or in N2 2.5 MPa at various transfer velocities from 2.5 mm•min-1 to 20 mm•min-1. The pore size in lotus carbon steel fabricated in the mixture gas of nitrogen and argon was small and homogeneous, whereas the pore size in nitrogen had bimodal distribution depending on the transfer velocity. The large pores were observed mainly at the edge of the slab, which are considered to be merged of several inclined pores. The porosity depended on nitrogen partial pressure, which is explained by Sieverts' law. The hardness of lotus carbon steel matrix increased, which was attributed to the solid-solution of nitrogen.

本文言語English
ページ(範囲)2377-2382
ページ数6
ジャーナルMetallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
41
9
DOI
出版ステータスPublished - 2010 9

ASJC Scopus subject areas

  • 凝縮系物理学
  • 材料力学
  • 金属および合金

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