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

doi:10.1016/j.msea.2009.06.009

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: Article › 査読

12 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
巻	524
号	1-2
DOI	https://doi.org/10.1016/j.msea.2009.06.009
出版ステータス	Published - 2009 10月 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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10.1016/j.msea.2009.06.009

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

abstract = "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.",

keywords = "Continuous zone melting, Lotus-type porous carbon steel, Nitrogen, Porosity, Porous metals, Solid-solution hardening, Tensile strength, Yield strength, Young's modulus",

author = "M. Kashihara and H. Yonetani and T. Kobi and Hyun, {S. K.} and S. Suzuki and H. Nakajima",

year = "2009",

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doi = "10.1016/j.msea.2009.06.009",

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T1 - Fabrication of lotus-type porous carbon steel via continuous zone melting and its mechanical properties

AU - Kashihara, M.

AU - Yonetani, H.

AU - Kobi, T.

AU - Hyun, S. K.

AU - Suzuki, S.

AU - Nakajima, H.

PY - 2009/10/25

Y1 - 2009/10/25

N2 - 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.

AB - 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.

KW - Continuous zone melting

KW - Lotus-type porous carbon steel

KW - Nitrogen

KW - Porosity

KW - Porous metals

KW - Solid-solution hardening

KW - Tensile strength

KW - Yield strength

KW - Young's modulus

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JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing

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

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