Orientation dependent tensile deformation behavior of two-phase laminate composites: Model analysis and finite element results

Journal Article · Fri Mar 01 04:00:00 EST 1996 · Acta Materialia

DOI:https://doi.org/10.1016/1359-6454(95)00240-5· OSTI ID:215392

Mertins, H; Lahann, H J ^[1]

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1. GKSS-Forschungszentrum Geesthacht GmbH (Germany). Inst. fuer Werkstofforschung

A model is presented which allows the distribution of stresses and strains within a two-phase laminate to be determined as a function of the angle between the normal vector to the laminate interfaces and the tensile axis during elastic and elastic-plastic deformation. The model is applied to {alpha}{sub 2}(Ti{sub 3}Al)/{gamma}(TiAl) and, for comparison, to Al/Al{sub 2}O{sub 3} laminates in order to study (a) the transfer of stresses between the two phases due to the mutual deformation constraint at the interphase boundaries and (b) the dependence of the yield stress on the orientation of the lamellae with respect to the tensile axis. The model predictions are in good agreement with the results of finite element computations within the composite except for certain boundary layers at the outer surfaces.

• OSTI ID: 215392
• Journal Information: Acta Materialia, Journal Name: Acta Materialia Journal Issue: 3 Vol. 44; ISSN XZ504Y; ISSN 1359-6454
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM
ALUMINIUM ALLOYS
ALUMINIUM OXIDES
COMPOSITE MATERIALS
DEFORMATION
ELASTICITY
FINITE ELEMENT METHOD
INTERFACES
INTERMETALLIC COMPOUNDS
LAMELLAE
MATHEMATICAL MODELS
PLASTICITY
PREDICTION EQUATIONS
STRAINS
STRESSES
TENSILE PROPERTIES
TITANIUM ALLOYS
YIELD STRENGTH