Crack growth resistance of Cr3C2/Al2O3 composites

Authors
Huang, JL Lin, HD Jeng, CA Lii, DF
Citation
Jl. Huang et al., Crack growth resistance of Cr3C2/Al2O3 composites, MAT SCI E A, 279(1-2), 2000, pp. 81-86
Citations number
23
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN journal
09215093 → ACNP
Volume
279
Issue
1-2
Year of publication
2000
Pages
81 - 86
Database
ISI
SICI code
0921-5093(20000229)279:1-2<81:CGROCC>2.0.ZU;2-0
Abstract
The crack resistance of Cr3C2/Al2O3 composites was investigated. The indent ation/strength technique was used to determine the R-curve behaviors. The s mall (2 mu m) Cr3C2 particles were found to have a better toughening effect than that of large (7 mu m) Cr3C2 particles in Cr3C2/Al2O3 composites. The R-curve behaviors in Cr3C2/Al2O3 composites could be attributed to the mec hanisms of crack-deflection and crack-branching. Materials exhibiting R-cur ve behavior also had narrower strength distribution and larger Weibull:modu lus than those of Griffith materials. (C) 2000 Elsevier Science S.A. All ri ghts reserved.