Grain size and temperature dependence of the threshold stress for superplastic deformation in yttria-stabilized zirconia polycrystals

被引：36

作者：

Dominguez-Rodriguez, A

Bravo-Leon, A

Ye, JD

Jimenez-Melendo, M

机构：

[1] Univ Sevilla, Dept Fis Mat Condensada, E-41080 Seville, Spain

[2] S China Univ Technol, Dept Inorgan Mat, Canton 510641, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 1998年 / 247卷 / 1-2期

关键词：

superplasticity; Y-TZP; threshold stress; activation energy;

D O I：

10.1016/S0921-5093(97)00837-X

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The influence of the threshold stress on the value of the activation energy (Q) and stress exponent (n) measured during creep tests in fine-grained Y2O3-doped ZrO2 polycrystals has been investigated in tie low-stress region at intermediate temperatures. A significant increase of the measured value of Q and n with decreasing stress has been observed, consistent with the existence of a threshold stress for superplastic deformation. (C) 1998 Elsevier Science S.A. All rights reserved.

引用

页码：97 / 101

页数：5

共 27 条

[21] SUPERPLASTIC BEHAVIOR OF A FINE-GRAINED, YTTRIA-STABILIZED, TETRAGONAL ZIRCONIA POLYCRYSTAL (Y-TZP) [J].

NIEH, TG ;

WADSWORTH, J .

ACTA METALLURGICA ET MATERIALIA, 1990, 38 (06) :1121-1133

[22] AN EMPIRICAL-LAW OF THE THRESHOLD STRESS FOR DIFFUSION CREEP IN PURE, SINGLE-PHASE, NON-POROUS SOLIDS [J].

PETERS, RG .

SCRIPTA METALLURGICA, 1983, 17 (05) :587-591

[23] Large tensile ductility of high purity polycrystalline yttria [J].

Rouxel, T ;

Murat, D ;

Besson, JL ;

Boncoeur, M .

ACTA MATERIALIA, 1996, 44 (01) :263-278

[24]

SAKUMA T, 1994, MATER SCI FORUM, V170-, P369, DOI 10.4028/www.scientific.net/MSF.170-172.369

[25] THE CREEP OF TYPE 304-STAINLESS STEEL AT LOW STRESSES [J].

SRITHARAN, T ;

JONES, H .

ACTA METALLURGICA, 1980, 28 (12) :1633-1639

[26] CREEP OF BETA-COBALT AT LOW STRESSES [J].

SRITHARAN, T ;

JONES, H .

ACTA METALLURGICA, 1979, 27 (07) :1293-1300

[27]

Wakai F., 1986, Advanced Ceramic Materials, V1, P259, DOI DOI 10.1111/J.1551-2916.1986.TB00026.X

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