Fracture resistance and strength of two-phase WC–Ni alloy

Microcracking near a crack tip in a material with microinhomogeneity is regarded as a stochastic process. Both the critical deformation energy density and minimum ligament size of a structural element at global failure are related to a fracture resistance parameter which depends also on the strength...

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Bibliographic Details
Published in:Theoretical and applied fracture mechanics 1999-04, Vol.31 (2), p.85-90
Main Authors: Lugovy, M.I., Podrezov, Yu.N., Slyunyaev, V.N., Verbylo, D.G.
Format: Article
Language:English
Subjects:
Applied sciences
Condensed matter: structure, mechanical and thermal properties
Exact sciences and technology
Fatigue, brittleness, fracture, and cracks
Fractures
Mechanical and acoustical properties of condensed matter
Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology
Mechanical properties of solids
Metals. Metallurgy
Physics
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Summary:Microcracking near a crack tip in a material with microinhomogeneity is regarded as a stochastic process. Both the critical deformation energy density and minimum ligament size of a structural element at global failure are related to a fracture resistance parameter which depends also on the strength. This parameter is also known as the critical energy density factor. For composites it is shown that transition of material behaviour from one structural state to another could alter the fracture resistance depending on character of the critical defect size and strength. The theoretical result is shown to be in agreement with the experimental data.
ISSN:0167-8442
1872-7638
DOI:10.1016/S0167-8442(99)00002-6