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REINFORCEMENT FRACTURE AND TENSILE DUCTILITY IN SPHERE‐REINFORCED METAL‐MATRIX COMPOSITES
Author(s) -
Llorca J.,
Martínez J. L.,
Elices M.
Publication year - 1997
Publication title -
fatigue and fracture of engineering materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 84
eISSN - 1460-2695
pISSN - 8756-758X
DOI - 10.1111/j.1460-2695.1997.tb00301.x
Subject(s) - reinforcement , materials science , composite material , ductility (earth science) , ultimate tensile strength , volume fraction , matrix (chemical analysis) , composite number , tension (geology) , stress (linguistics) , fracture (geology) , creep , linguistics , philosophy
— Sphere‐reinforced metal‐matrix composites are modelled as a three dimensional array of hexagonal cylinders, each one with a broken or intact spherical reinforcement at its centre. Using this model, the stress‐strain response of the composite in uniaxial tension was obtained. A parametrical analysis of the influence of matrix and reinforcement properties as well as volume fraction on the ductility of these composites was performed. It was found that the decrease in ductility with respect to the unreinforced matrix depended mainly on the reinforcement/matrix strength ratio and on the defect distribution in the particulates.