Creep-related micromechanical behavior of zirconia-based ceramics investigated by nanoindentation

被引：21

作者：

Liu, Erqiang ^{[1
]}

Wang, Hefeng ^{[1
]}

Xiao, Gesheng ^{[1
]}

Yuan, Guozheng ^{[1
]}

Shu, Xuefeng ^{[1
]}

机构：

[1] Taiyuan Univ Technol, Inst Appl Mech & Biomed Engn, Taiyuan 030024, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2015年 / 41卷 / 10期

基金：

中国国家自然科学基金;

关键词：

ZrO2; Nanoindentation; Creep; Grain boundaries; STABILIZED TETRAGONAL ZIRCONIA; BULK METALLIC-GLASS; RATE SENSITIVITY; SUPERPLASTIC BEHAVIOR; ELASTIC-MODULUS; DIFFUSION CREEP; CE-TZP; INDENTATION; DEFORMATION; TEMPERATURE;

D O I：

10.1016/j.ceramint.2015.06.136

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The creep-related micromechanical behavior of zirconia ceramics (ZrO2) was investigated by nanoindentation based on continuous stiffness measurements at different strain rates at room temperature. The elastic modulus was found to decrease continually and the hardness reached a constant value with increasing depth. Moreover, the elastic modulus and hardness both increased at a given indentation depth with increasing loading rate and exhibited similar trends. The creep strain rate sensitivity was independent of the loading rate. The primary deformation mechanism is grain boundaries sliding accompanied by intergranular dislocation due to the existence of amorphous phases in the grain boundaries. Meanwhile, the mechanism of stress-directed diffusion acts an important role during the creep process. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：12939 / 12944

页数：6

共 34 条

[1]

ATKINS AG, 1966, J I MET, V94, P369

[2] Superplastic behavior of zirconia-reinforced alumina nanocomposites from powder alcoxide mixtures [J].

Calderón-Moreno, JM ;

Schehl, M ;

Popa, M .

ACTA MATERIALIA, 2002, 50 (16) :3973-3983

[3] Threshold stress superplastic behavior and dislocation activity in a three-phase alumina-zirconia-mullite composite [J].

Chen, Tiandan ;

Mohamed, Farghalli A. ;

Mecartney, Martha L. .

ACTA MATERIALIA, 2006, 54 (17) :4415-4426

[4] The role of diffusion creep in the superplastic deformation of 3 mol% yttria stabilized tetragonal zirconia [J].

Chokshi, AH .

SCRIPTA MATERIALIA, 2000, 42 (03) :241-248

[5] Diffusion creep in oxide ceramics [J].

Chokshi, AH .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2002, 22 (14-15) :2469-2478

[6] Anelastic deformation of a Pd40Cu30Ni10P20 bulk metallic glass during nanoindentation [J].

Concustell, A ;

Sort, J ;

Greer, AL ;

Baró, MD .

APPLIED PHYSICS LETTERS, 2006, 88 (17)

[7] Comparison study on the high-temperature phase stability of CaO-doped zirconia made using different precipitants [J].

Duan, Guorong ;

Yang, Xujie ;

Lu, Anqi ;

Huang, Guohong ;

Lu, Lude ;

Wang, Xin .

MATERIALS CHARACTERIZATION, 2007, 58 (01) :78-81

[8] Static and cyclic crack propagation in Ce-TZP ceramics with different amounts of transformation toughening [J].

El Attaoui, H. ;

Saadaoui, M. ;

Chevalier, J. ;

Fantozzi, G. .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2007, 27 (2-3) :483-486

[9] TOUGHENING OF BRITTLE SOLIDS BY MARTENSITIC TRANSFORMATIONS [J].

EVANS, AG ;

CANNON, RM .

ACTA METALLURGICA, 1986, 34 (05) :761-800

[10] Superplastic characteristics of high purity yttria-stabilized zirconia polycrystals [J].

Jiménez-Melendo, M ;

Domínguez-Rodríguez, A ;

Holgado-Salado, M .

INTERNATIONAL JOURNAL OF PLASTICITY, 2001, 17 (03) :341-352

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