Indentation precracking of Y-TZP: implications to R-curves and strength

被引：14

作者：

Alcala, J ^{[1
]}

Anglada, M ^{[1
]}

机构：

[1] Univ Castilla La Mancha, ETS, E-13071 Ciudad Real, Spain

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 1998年 / 245卷 / 02期

关键词：

indentation precracking; R-curves; Y-TZP;

D O I：

10.1016/S0921-5093(97)00726-0

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Fracture resistance curves generated with indentation cracks and semielliptical surface cracks which are free of precracking effects are compared. The differences are related to the presence of an uncracked ligament at the center of the indent induced by the inelastic zone. The role of crack shape on the R-curve behavior is also studied experimentally with through-thickness and semielliptical surface cracks. The R-curves and crack growth thresholds obtained with semielliptical cracks are correlated with failure strength and life limits measured with smooth (uncracked) specimens. (C) 1998 Elsevier Science S.A. All rights reserved.

引用

页码：267 / 276

页数：10

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