A MICROMECHANICAL PLASTIC MODEL FOR ZRO2-TOUGHENED CERAMICS

被引：3

作者：

LAM, KY ^{[1
]}

ZHANG, JM ^{[1
]}

ONG, PP ^{[1
]}

机构：

[1] NATL UNIV SINGAPORE,DEPT PHYS,SINGAPORE 0511,SINGAPORE

来源：

MECHANICS OF MATERIALS | 1995年 / 19卷 / 2-3期

关键词：

D O I：

10.1016/0167-6636(94)00037-H

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

An increment plasticity formulation is established for the transformation plastic behavior of zirconia-toughened ceramics based on micromechanics of heterogeneous media. Mori-Tanaka estimates are established for the overall plastic strains and the overall yield stresses. The plastic flow function is determined in terms of the transformation twinning of a single zirconia particle embedded in an infinite matrix with the average matrix stresses. Numerical examples are given for the transformation yielding of ceramics with aligned zirconia particles under uniaxial loading.

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页码：227 / 238

页数：12

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