Resintered microstructure dependence of mechanical properties of alumina wire processed by controlled fracture forming

Wen Bo Du, Kiyohiko Tatsuzawa, Tatsuhiko Aizawa, Junji Kihara

Research output: Contribution to journalArticle

Abstract

The mechanical properties of the CFF-Al2O3 wire with respect to the Vickers hardness, the fracture toughness and the fracture/tensile strength have been discussed in the present investigation. Results indicate that the CFF process is valid for fabricating Al2O3 wire with enhanced mechanical properties. Residual pores in the resintered microstructure are thought to be fatal in determination of the mechanical properties, but the grain size dependence seems to be insensitive. At presence of porosity lower than 2.0%, the fracture of the CFF-Al2O3 wire is controlled by the transgranular mode, and its fracture/tensile strength achieves 1.1 GPa. However, the intergranular mode becomes dominated, resulting in a decrease in strength if porosity is higher than 2.0%.

Original languageEnglish
Pages (from-to)1073-1079
Number of pages7
JournalFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume47
Issue number10
Publication statusPublished - 2000 Oct
Externally publishedYes

Fingerprint

Aluminum Oxide
Alumina
Wire
Mechanical properties
Microstructure
Tensile strength
Porosity
Vickers hardness
Fracture toughness

ASJC Scopus subject areas

  • Mechanical Engineering
  • Metals and Alloys

Cite this

Resintered microstructure dependence of mechanical properties of alumina wire processed by controlled fracture forming. / Du, Wen Bo; Tatsuzawa, Kiyohiko; Aizawa, Tatsuhiko; Kihara, Junji.

In: Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy, Vol. 47, No. 10, 10.2000, p. 1073-1079.

Research output: Contribution to journalArticle

@article{f897d6b11a1648909132fbe74a54f237,
title = "Resintered microstructure dependence of mechanical properties of alumina wire processed by controlled fracture forming",
abstract = "The mechanical properties of the CFF-Al2O3 wire with respect to the Vickers hardness, the fracture toughness and the fracture/tensile strength have been discussed in the present investigation. Results indicate that the CFF process is valid for fabricating Al2O3 wire with enhanced mechanical properties. Residual pores in the resintered microstructure are thought to be fatal in determination of the mechanical properties, but the grain size dependence seems to be insensitive. At presence of porosity lower than 2.0{\%}, the fracture of the CFF-Al2O3 wire is controlled by the transgranular mode, and its fracture/tensile strength achieves 1.1 GPa. However, the intergranular mode becomes dominated, resulting in a decrease in strength if porosity is higher than 2.0{\%}.",
author = "Du, {Wen Bo} and Kiyohiko Tatsuzawa and Tatsuhiko Aizawa and Junji Kihara",
year = "2000",
month = "10",
language = "English",
volume = "47",
pages = "1073--1079",
journal = "Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy",
issn = "0532-8799",
publisher = "Funtai Funamtsu Yakin Kyokai/Japan Soc. of Powder Metallurgy",
number = "10",

}

TY - JOUR

T1 - Resintered microstructure dependence of mechanical properties of alumina wire processed by controlled fracture forming

AU - Du, Wen Bo

AU - Tatsuzawa, Kiyohiko

AU - Aizawa, Tatsuhiko

AU - Kihara, Junji

PY - 2000/10

Y1 - 2000/10

N2 - The mechanical properties of the CFF-Al2O3 wire with respect to the Vickers hardness, the fracture toughness and the fracture/tensile strength have been discussed in the present investigation. Results indicate that the CFF process is valid for fabricating Al2O3 wire with enhanced mechanical properties. Residual pores in the resintered microstructure are thought to be fatal in determination of the mechanical properties, but the grain size dependence seems to be insensitive. At presence of porosity lower than 2.0%, the fracture of the CFF-Al2O3 wire is controlled by the transgranular mode, and its fracture/tensile strength achieves 1.1 GPa. However, the intergranular mode becomes dominated, resulting in a decrease in strength if porosity is higher than 2.0%.

AB - The mechanical properties of the CFF-Al2O3 wire with respect to the Vickers hardness, the fracture toughness and the fracture/tensile strength have been discussed in the present investigation. Results indicate that the CFF process is valid for fabricating Al2O3 wire with enhanced mechanical properties. Residual pores in the resintered microstructure are thought to be fatal in determination of the mechanical properties, but the grain size dependence seems to be insensitive. At presence of porosity lower than 2.0%, the fracture of the CFF-Al2O3 wire is controlled by the transgranular mode, and its fracture/tensile strength achieves 1.1 GPa. However, the intergranular mode becomes dominated, resulting in a decrease in strength if porosity is higher than 2.0%.

UR - http://www.scopus.com/inward/record.url?scp=0034291166&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0034291166&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0034291166

VL - 47

SP - 1073

EP - 1079

JO - Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy

JF - Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy

SN - 0532-8799

IS - 10

ER -