A DISLOCATION MECHANISM OF CRACK NUCLEATION IN CUBIC ZIRCONIA SINGLE-CRYSTALS

被引：19

作者：

FARBER, BY

CHIARELLI, AS

HEUER, AH

机构：

[1] Department of Materials Science and Engineering, School of Engineering, Case Western Reserve University, Cleveland, Ohio

[2] FIUPSO Material Science and Engineering School, Université Paris Sud, Orsay

来源：

PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES | 1994年 / 70卷 / 01期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1080/01418619408242546

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The dislocation structure around elevated-temperature indentations on {111} planes of 9.4 and 21 mol.% Y2O3 fully stabilized cubic ZrO2 was investigated using selective etching and transmission electron microscopy (TEM). The temperature dependences of the microhardness and the extent of the plastic zone were measured. Different fracture modes were detected in the two materials. Cracking arising from interaction between slip bands was observed in the 21 mol.% Y2O3 material and direct evidence of the formation of Lomer-type dislocation pile-ups leading to crack nucleation was obtained by TEM. The mechanisms of dislocation plasticity and fracture during indentation of cubic zirconia are discussed.

引用

页码：201 / 217

页数：17

共 27 条

[1] DISLOCATIONS AND BRITTLE FRACTURE IN ELEMENTAL AND COMPOUND SEMICONDUCTORS [J].

ABRAHAMS, MS ;

EKSTROM, L .

ACTA METALLURGICA, 1960, 8 (09) :654-662

[2] HIGH-TEMPERATURE PLASTIC-DEFORMATION OF Y2O3-STABILIZED ZRO2 SINGLE-CRYSTALS .3. VARIATION IN WORK-HARDENING BETWEEN 1200-DEGREES-C AND 1500-DEGREES-C [J].

CHEONG, DS ;

DOMINGUEZRODRIGUEZ, A ;

HEUER, AH .

PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES, 1991, 63 (03) :377-388

[3] HIGH-TEMPERATURE PLASTIC-DEFORMATION OF Y2O3-STABILIZED ZRO2 SINGLE-CRYSTALS .2. ELECTRON-MICROSCOPY STUDIES OF DISLOCATION SUBSTRUCTURES [J].

CHEONG, DS ;

DOMINGUEZRODRIGUEZ, A ;

HEUER, AH .

PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES, 1989, 60 (01) :123-138

[4]

COTTRELL AH, 1958, T AM I MIN MET ENG, V212, P192

[5] HIGH-TEMPERATURE PRECIPITATION HARDENING OF 2-PHASE Y2O3-PARTIALLY-STABILIZED ZRO2 SINGLE-CRYSTALS - A 1ST REPORT [J].

DOMINGUEZRODRIGUEZ, A ;

LANTERI, V ;

HEUER, AH .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1986, 69 (03) :285-287

[6] DISLOCATIONS AND THE MECHANICAL-PROPERTIES OF STABILIZED ZRO2 [J].

DOMINGUEZRODRIGUEZ, A ;

HEUER, AH ;

CASTAING, J .

RADIATION EFFECTS AND DEFECTS IN SOLIDS, 1991, 119 :759-769

[7] HIGH-TEMPERATURE PLASTIC-DEFORMATION IN Y2O3-STABILIZED ZRO2 SINGLE-CRYSTALS .4. THE SECONDARY SLIP SYSTEMS [J].

DOMINGUEZRODRIGUEZ, A ;

CHEONG, DS ;

HEUER, AH .

PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES, 1991, 64 (04) :923-929

[8] PLASTIC-DEFORMATION AND SOLID-SOLUTION HARDENING OF Y2O3-STABILIZED ZRO2 [J].

DOMINGUEZRODRIGUEZ, A ;

LAGERLOF, KPD ;

HEUER, AH .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1986, 69 (03) :281-284

[9] DISLOCATIONS IN FLUORITE STRUCTURE [J].

EVANS, AG ;

PRATT, PL .

PHILOSOPHICAL MAGAZINE, 1969, 20 (168) :1213-&

[10] OBSERVATION OF LOMER-COTTRELL LOCKS IN SIGE STRAINED LAYERS [J].

FERRET, P ;

ROBINSON, BJ ;

THOMPSON, DA ;

BARIBEAU, JM .

APPLIED PHYSICS LETTERS, 1990, 57 (21) :2220-2221

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