Grain motion statistics of polycrystalline zirconia during superplastic deformation

Taku Okamoto; Kouichi Yasuda; Tadashi Shiota

doi:10.1016/j.scriptamat.2010.10.011

Grain motion statistics of polycrystalline zirconia during superplastic deformation

Taku Okamoto, Kouichi Yasuda, Tadashi Shiota

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

3 Citations (Scopus)

Abstract

This study focuses on grain motion in tetragonal zirconia polycrystal ceramics during superplastic deformation. Since grains were found to move in a zigzag motion in previous experiments, the present study attempts to analyze the grain motion based on random walk theory. The analysis shows that the zigzag motion results from changes in constraint by surrounding grains. The constraint is spatially distributed at first, and its distribution gradually becomes uniform as superplastic deformation advances.

Original language	English
Pages (from-to)	253-255
Number of pages	3
Journal	Scripta Materialia
Volume	64
Issue number	3
DOIs	https://doi.org/10.1016/j.scriptamat.2010.10.011
Publication status	Published - Feb 2011
Externally published	Yes

Keywords

Ceramics
High-temperature deformation
Kinetics
Superplasticity
TZP

ASJC Scopus subject areas

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

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10.1016/j.scriptamat.2010.10.011

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abstract = "This study focuses on grain motion in tetragonal zirconia polycrystal ceramics during superplastic deformation. Since grains were found to move in a zigzag motion in previous experiments, the present study attempts to analyze the grain motion based on random walk theory. The analysis shows that the zigzag motion results from changes in constraint by surrounding grains. The constraint is spatially distributed at first, and its distribution gradually becomes uniform as superplastic deformation advances.",

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AU - Okamoto, Taku

AU - Yasuda, Kouichi

AU - Shiota, Tadashi

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AB - This study focuses on grain motion in tetragonal zirconia polycrystal ceramics during superplastic deformation. Since grains were found to move in a zigzag motion in previous experiments, the present study attempts to analyze the grain motion based on random walk theory. The analysis shows that the zigzag motion results from changes in constraint by surrounding grains. The constraint is spatially distributed at first, and its distribution gradually becomes uniform as superplastic deformation advances.

KW - Ceramics

KW - High-temperature deformation

KW - Kinetics

KW - Superplasticity

KW - TZP

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ER -

Grain motion statistics of polycrystalline zirconia during superplastic deformation

Abstract

Keywords

ASJC Scopus subject areas

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