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

    Research output: Contribution to journalArticle

    6 Citations (Scopus)

    Abstract

    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.

    Original languageEnglish
    Pages (from-to)2377-2382
    Number of pages6
    JournalMetallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
    Volume41
    Issue number9
    DOIs
    Publication statusPublished - 2010 Sep

    Fingerprint

    carbon steels
    Continuous casting
    Carbon steel
    slabs
    Nitrogen
    porosity
    nitrogen
    Fabrication
    atmospheres
    fabrication
    Gas mixtures
    Pore size
    gas mixtures
    Argon
    Partial pressure
    Solid solutions
    Porosity
    Hardness
    partial pressure
    solid solutions

    ASJC Scopus subject areas

    • Condensed Matter Physics
    • Metals and Alloys
    • Mechanics of Materials

    Cite this

    Fabrication of lotus-type porous carbon steel slabs by continuous casting technique in nitrogen atmosphere. / Kashihara, Makoto; Suzuki, Shinsuke; Kawamura, Yuki; Kim, Sang Youl; Yonetani, Hiroshi; Nakajima, Hideo.

    In: Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, Vol. 41, No. 9, 09.2010, p. 2377-2382.

    Research output: Contribution to journalArticle

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