Grain motion statistics of polycrystalline zirconia during superplastic deformation

被引：3
|
作者：
Okamoto, Taku [1 ]
Yasuda, Kouichi [1 ]
Shiota, Tadashi [1 ]
机构：
[1] Tokyo Inst Technol, Grad Sch Sci & Engn, Dept Met & Ceram Sci, Meguro Ku, Tokyo 1528552, Japan
来源：
SCRIPTA MATERIALIA | 2011年 / 64卷 / 03期
基金：
日本学术振兴会;
关键词：
Ceramics; High-temperature deformation; Superplasticity; Kinetics; TZP; HIGH-TEMPERATURE DEFORMATION; SINGLE-PHASE ALUMINA; CREEP-BEHAVIOR; CERAMICS;
D O I：
10.1016/j.scriptamat.2010.10.011
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
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. (C) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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页码：253 / 255
页数：3
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