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Fracture Resistance Curve Behavior of Multilayered Alumina-Zirconia Composites Produced by Centrifugation

Moon, Robert J. and Bowman, Keith J. and Trumble, Kevin P. and Rödel, Jürgen (2001):
Fracture Resistance Curve Behavior of Multilayered Alumina-Zirconia Composites Produced by Centrifugation.
In: Acta Materialia, PERGAMON-ELSEVIER SCIENCE LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND, pp. 995-1003, 49, (6), ISSN 1359-6454, [Online-Edition: http://dx.doi.org/10.1016/S1359-6454(01)00006-4],
[Article]

Abstract

The single-edge-v-notched-breain (SEVNB) testing method was used to measure the crack growth resistance (R-curve) behavior of multilayered alumina-zirconia composites. Crack initiation and extension from the V-notch tip were observed via in situ optical microscopy. The resulting R-curves were compared with an R-curve measured from a monolithic composite having a similar composition and a homogeneous microstructure, where the influence of layer-layer interfaces, gradient microstructures, and the direction of crack propagation on the resulting R-curves were observed. Additionally, the stress intensity factor for crack initiation from the V-notch tip was similar to0.2 MPa(.)m(1/2) higher than the stress intensity factor to further extend this crack.

Item Type: Article
Erschienen: 2001
Creators: Moon, Robert J. and Bowman, Keith J. and Trumble, Kevin P. and Rödel, Jürgen
Title: Fracture Resistance Curve Behavior of Multilayered Alumina-Zirconia Composites Produced by Centrifugation
Language: English
Abstract:

The single-edge-v-notched-breain (SEVNB) testing method was used to measure the crack growth resistance (R-curve) behavior of multilayered alumina-zirconia composites. Crack initiation and extension from the V-notch tip were observed via in situ optical microscopy. The resulting R-curves were compared with an R-curve measured from a monolithic composite having a similar composition and a homogeneous microstructure, where the influence of layer-layer interfaces, gradient microstructures, and the direction of crack propagation on the resulting R-curves were observed. Additionally, the stress intensity factor for crack initiation from the V-notch tip was similar to0.2 MPa(.)m(1/2) higher than the stress intensity factor to further extend this crack.

Journal or Publication Title: Acta Materialia
Volume: 49
Number: 6
Publisher: PERGAMON-ELSEVIER SCIENCE LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
Uncontrolled Keywords: ceramic; layered structure; fracture & fracture toughness; FUNCTIONALLY GRADED MATERIALS; NOTCH-ROOT RADIUS; PARTICLE PACKING; R-CURVES; TOUGHNESS; AL2O3; SLURRIES; CERAMICS; CRACKS
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Nonmetallic-Inorganic Materials
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 14 Jul 2011 10:51
Official URL: http://dx.doi.org/10.1016/S1359-6454(01)00006-4
Identification Number: doi:10.1016/S1359-6454(01)00006-4
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