On the bowed out tilt wall model of flow stress and size effects in metal matrix composites

The effect of dislocation spacing in a bowed-out tilt-wall model of the flow stress of composites is investigated. For realistic spacings the effect is very small, in rough agreement with a simple superdislocation approximation of the wall. The tilt-wall model provides good predictions of strength i...

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Bibliographic Details
Published in:Scripta metallurgica et materialia 1994-11, Vol.31 (10), p.1321-1324
Main Authors: Rhee, Moono, Hirth, J.P., Zbib, H.M.
Format: Article
Language:English
Subjects:
360603 - Materials- Properties
ALLOYS
ALUMINIUM ALLOYS
Applied sciences
COMPOSITE MATERIALS
Elasticity. Plasticity
Exact sciences and technology
FLOW STRESS
MATERIALS
MATERIALS SCIENCE
MATHEMATICAL MODELS
MECHANICAL PROPERTIES
Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology
Metals. Metallurgy
PLASTICITY
SILICON ALLOYS
STRESSES
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Summary:The effect of dislocation spacing in a bowed-out tilt-wall model of the flow stress of composites is investigated. For realistic spacings the effect is very small, in rough agreement with a simple superdislocation approximation of the wall. The tilt-wall model provides good predictions of strength in composites with large particle spacings. (AIAA)
ISSN:0956-716X
DOI:10.1016/0956-716X(94)90111-2