Fabrication and mechanical properties of Lotus-type porous carbon steel by unidirectional solidification in nitrogen atmosphere

Makoto Kashihara; Hirosi Yonetani; Takahiro Kobi; Soong Keun Hyun; Shinsuke Suzuki; Hideo Nakajima

doi:10.2355/tetsutohagane.94.30

Fabrication and mechanical properties of Lotus-type porous carbon steel by unidirectional solidification in nitrogen atmosphere

Makoto Kashihara^*, Hirosi Yonetani, Takahiro Kobi, Soong Keun Hyun, Shinsuke Suzuki, Hideo Nakajima

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

Lotus-type porous carbon steel (AISI 1018) whose long cylindrical pores are aligned in one direction was fabricated by unidirectional solidification in pressurized nitrogen gas. The ingots with the porosity from 10 to 30% were fabricated under the nitrogen gas pressure of 2.5 MPa at various transference velocities from 40 to 160 ,μm s^-1. Tensile strength was measured for Lotus-type porous carbon steel. Elongation was improved due to normalizing at 1200K. The yield strength does not change even in lotus steel less than 20% in porosity. This superior property is attributed to nitrogen solid solution hardening and pore existence.

Original language	English
Pages (from-to)	30-34
Number of pages	5
Journal	Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
Volume	94
Issue number	1
DOIs	https://doi.org/10.2355/tetsutohagane.94.30
Publication status	Published - 2008
Externally published	Yes

Keywords

Lotus-type porous carbon steel
Nitrogen
Porosity
Porous metals
Tensile test
Unidirectional solidification

ASJC Scopus subject areas

Condensed Matter Physics
Physical and Theoretical Chemistry
Metals and Alloys
Materials Chemistry

Access to Document

10.2355/tetsutohagane.94.30

Cite this

@article{737cf564434847bc8a72b799d9539f7d,

title = "Fabrication and mechanical properties of Lotus-type porous carbon steel by unidirectional solidification in nitrogen atmosphere",

abstract = "Lotus-type porous carbon steel (AISI 1018) whose long cylindrical pores are aligned in one direction was fabricated by unidirectional solidification in pressurized nitrogen gas. The ingots with the porosity from 10 to 30% were fabricated under the nitrogen gas pressure of 2.5 MPa at various transference velocities from 40 to 160 ,μm s-1. Tensile strength was measured for Lotus-type porous carbon steel. Elongation was improved due to normalizing at 1200K. The yield strength does not change even in lotus steel less than 20% in porosity. This superior property is attributed to nitrogen solid solution hardening and pore existence.",

keywords = "Lotus-type porous carbon steel, Nitrogen, Porosity, Porous metals, Tensile test, Unidirectional solidification",

author = "Makoto Kashihara and Hirosi Yonetani and Takahiro Kobi and Hyun, {Soong Keun} and Shinsuke Suzuki and Hideo Nakajima",

year = "2008",

doi = "10.2355/tetsutohagane.94.30",

language = "English",

volume = "94",

pages = "30--34",

journal = "Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan",

issn = "0021-1575",

publisher = "Iron and Steel Institute of Japan",

number = "1",

}

TY - JOUR

T1 - Fabrication and mechanical properties of Lotus-type porous carbon steel by unidirectional solidification in nitrogen atmosphere

AU - Kashihara, Makoto

AU - Yonetani, Hirosi

AU - Kobi, Takahiro

AU - Hyun, Soong Keun

AU - Suzuki, Shinsuke

AU - Nakajima, Hideo

PY - 2008

Y1 - 2008

N2 - Lotus-type porous carbon steel (AISI 1018) whose long cylindrical pores are aligned in one direction was fabricated by unidirectional solidification in pressurized nitrogen gas. The ingots with the porosity from 10 to 30% were fabricated under the nitrogen gas pressure of 2.5 MPa at various transference velocities from 40 to 160 ,μm s-1. Tensile strength was measured for Lotus-type porous carbon steel. Elongation was improved due to normalizing at 1200K. The yield strength does not change even in lotus steel less than 20% in porosity. This superior property is attributed to nitrogen solid solution hardening and pore existence.

AB - Lotus-type porous carbon steel (AISI 1018) whose long cylindrical pores are aligned in one direction was fabricated by unidirectional solidification in pressurized nitrogen gas. The ingots with the porosity from 10 to 30% were fabricated under the nitrogen gas pressure of 2.5 MPa at various transference velocities from 40 to 160 ,μm s-1. Tensile strength was measured for Lotus-type porous carbon steel. Elongation was improved due to normalizing at 1200K. The yield strength does not change even in lotus steel less than 20% in porosity. This superior property is attributed to nitrogen solid solution hardening and pore existence.

KW - Lotus-type porous carbon steel

KW - Nitrogen

KW - Porosity

KW - Porous metals

KW - Tensile test

KW - Unidirectional solidification

UR - http://www.scopus.com/inward/record.url?scp=67650804879&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=67650804879&partnerID=8YFLogxK

U2 - 10.2355/tetsutohagane.94.30

DO - 10.2355/tetsutohagane.94.30

M3 - Article

AN - SCOPUS:67650804879

SN - 0021-1575

VL - 94

SP - 30

EP - 34

JO - Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan

JF - Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan

IS - 1

ER -

Fabrication and mechanical properties of Lotus-type porous carbon steel by unidirectional solidification in nitrogen atmosphere

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this