Ceramics superplasticity: Deformation mechanisms and microstructures

被引：19

作者：

Wakai, F ^{[1
]}

Kondo, N ^{[1
]}

Ogawa, H ^{[1
]}

Nagano, T ^{[1
]}

Tsurekawa, S ^{[1
]}

机构：

[1] JAPAN SCI & TECHNOL CORP,INT JOINT RES PROGRAM,ATSUTA KU,NAGOYA,AICHI 456,JAPAN

来源：

MATERIALS CHARACTERIZATION | 1996年 / 37卷 / 05期

关键词：

D O I：

10.1016/S1044-5803(96)00174-X

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The superplasticity shall be generally achieved by grain refinement of various ceramics (ionic polycrystals and covalent polycrystals). This nature can be utilized for novel deformation processing in ceramic industy, for example, superplastic forming and superplastic forging. The superplasticity is a macroscopic phenomena that is very sensitive to slight difference in atomistic structure, and nature and chemical bonding of grain boundary. The mechanism of superplasticity is grain boundary sliding accommodated by matter transport through grain boundary. The models developed for superplasticity are classified by the structure of grain boundary. The experimental results on superplasticity of Zro(2) and Si3N4 were reviewed and compared to the predictions from the theories. (C) Elsevier Science Inc., 1996.

引用

页码：331 / 341

页数：11

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