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

Research output: Contribution to journal › Article

10 Citations (Scopus)

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.

Original language	English
Pages (from-to)	112-118
Number of pages	7
Journal	Materials Science and Engineering A
Volume	524
Issue number	1-2
DOIs	https://doi.org/10.1016/j.msea.2009.06.009
Publication status	Published - 2009 Oct 25
Externally published	Yes

Keywords

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

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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Kashihara, M., Yonetani, H., Kobi, T., Hyun, S. K., Suzuki, S., & Nakajima, H. (2009). Fabrication of lotus-type porous carbon steel via continuous zone melting and its mechanical properties. Materials Science and Engineering A, 524(1-2), 112-118. https://doi.org/10.1016/j.msea.2009.06.009

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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.",

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

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AU - Kashihara, M.

AU - Yonetani, H.

AU - Kobi, T.

AU - Hyun, S. K.

AU - Suzuki, S.

AU - Nakajima, H.

PY - 2009/10/25

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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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