Microstructure and high-temperature strength of directionally solidified Al 2O 3/YAG/ZrO 2 eutectic composite

Yonosuke Murayama; Shuji Hanada; Jong Ho Lee; Akira Yoshikawa; Tsuguo Fukuda

doi:10.2320/jinstmet.69.488

Microstructure and high-temperature strength of directionally solidified Al ₂O ₃/YAG/ZrO ₂ eutectic composite

Yonosuke Murayama, Shuji Hanada, Jong Ho Lee, Akira Yoshikawa, Tsuguo Fukuda

Materials Design Division

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

Abstract

The microstructures of an A ₂O ₃/YAG/ZrO ₂ eutectic Melt-Growth-Composite (MGC) solidified unidirectionally by the modified-pulling-down method were studied by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM) and electron backscattered pattern (EBSP) method. The anisotropy of strength was investigated by hardness tests and compression tests at various directions of the composite at elevated temperatures. The eutectic MGC has strong preferred growing orientation and the constituent phases hold the orientation relationship. The eutectic MGC shows excellent high-temperature strength and can deform plastically above about 1500 K. High-temperature strength above 1500 K depends on strain rate, temperature and orientation.

Original language	English
Pages (from-to)	488-492
Number of pages	5
Journal	Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
Volume	69
Issue number	6
DOIs	https://doi.org/10.2320/jinstmet.69.488
Publication status	Published - 2005 Jun

Keywords

Al O /YAG/ZrO eutectic composite
Crystallographic texture
Electron backscattered pattern (EBSP)
High-temperature strength
Melt-growth-composite (MGC)
Strength anisotropy

ASJC Scopus subject areas

Condensed Matter Physics
Mechanics of Materials
Metals and Alloys
Materials Chemistry

Access to Document

10.2320/jinstmet.69.488

Cite this

Microstructure and high-temperature strength of directionally solidified Al ₂O ₃/YAG/ZrO ₂ eutectic composite. / Murayama, Yonosuke; Hanada, Shuji; Lee, Jong Ho; Yoshikawa, Akira; Fukuda, Tsuguo.

In: Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals, Vol. 69, No. 6, 06.2005, p. 488-492.

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

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abstract = "The microstructures of an A 2O 3/YAG/ZrO 2 eutectic Melt-Growth-Composite (MGC) solidified unidirectionally by the modified-pulling-down method were studied by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM) and electron backscattered pattern (EBSP) method. The anisotropy of strength was investigated by hardness tests and compression tests at various directions of the composite at elevated temperatures. The eutectic MGC has strong preferred growing orientation and the constituent phases hold the orientation relationship. The eutectic MGC shows excellent high-temperature strength and can deform plastically above about 1500 K. High-temperature strength above 1500 K depends on strain rate, temperature and orientation.",

keywords = "Al O /YAG/ZrO eutectic composite, Crystallographic texture, Electron backscattered pattern (EBSP), High-temperature strength, Melt-growth-composite (MGC), Strength anisotropy",

author = "Yonosuke Murayama and Shuji Hanada and Lee, {Jong Ho} and Akira Yoshikawa and Tsuguo Fukuda",

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AU - Fukuda, Tsuguo

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AB - The microstructures of an A 2O 3/YAG/ZrO 2 eutectic Melt-Growth-Composite (MGC) solidified unidirectionally by the modified-pulling-down method were studied by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM) and electron backscattered pattern (EBSP) method. The anisotropy of strength was investigated by hardness tests and compression tests at various directions of the composite at elevated temperatures. The eutectic MGC has strong preferred growing orientation and the constituent phases hold the orientation relationship. The eutectic MGC shows excellent high-temperature strength and can deform plastically above about 1500 K. High-temperature strength above 1500 K depends on strain rate, temperature and orientation.

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