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 | |
| Publication status | Published - 2009 Oct 25 |
| Externally published | Yes |
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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
- Mechanical Engineering
- Mechanics of Materials
Cite this
Fabrication of lotus-type porous carbon steel via continuous zone melting and its mechanical properties. / Kashihara, M.; Yonetani, H.; Kobi, T.; Hyun, S. K.; Suzuki, Shinsuke; Nakajima, H.
In: Materials Science and Engineering A, Vol. 524, No. 1-2, 25.10.2009, p. 112-118.Research output: Contribution to journal › Article
}
TY - JOUR
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, Shinsuke
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
UR - http://www.scopus.com/inward/record.url?scp=69249150807&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=69249150807&partnerID=8YFLogxK
U2 - 10.1016/j.msea.2009.06.009
DO - 10.1016/j.msea.2009.06.009
M3 - Article
VL - 524
SP - 112
EP - 118
JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
SN - 0921-5093
IS - 1-2
ER -