Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/84470
Title: Role of controlled debonding along fiber/matrix interfaces in the strength and toughness of metal matrix composites
Authors: Argon, A.S.
Seleznev, M.L.
Shih, C.F. 
Liu, X.H.
Keywords: Debonding
Interface fracture
Toughness of composites
Traction/separation model
Issue Date: 1998
Source: Argon, A.S.,Seleznev, M.L.,Shih, C.F.,Liu, X.H. (1998). Role of controlled debonding along fiber/matrix interfaces in the strength and toughness of metal matrix composites. International Journal of Fracture 93 (1-4) : 351-371. ScholarBank@NUS Repository.
Abstract: In metal matrix composites toughness is derived primarily from the plastic work of rupture of ductile matrix ligaments between the fractured fibers and from the plastic work of simple shear separation along steps connecting major fracture terraces. In the optimization of tensile strength in the longitudinal and transverse directions together with the respective works of fracture the most important factor is the control of the extent of debonding along interfaces between the fibers and the matrix, which develops locally in the course of deformation in a continuously changing mix of modes. In Al alloy matrix composites reinforced with Al2O3 fibers an effective means of controlling the key interface fracture toughness is through coarsening of Al2Cu intermetallic interface precipitates which prescribe a ductile fracture separation layer. A combined experimental approach and micromechanical modeling, utilizing a specially tailored novel tension/shear: traction/separation law provides the means for further optimization of overall behavior.
Source Title: International Journal of Fracture
URI: http://scholarbank.nus.edu.sg/handle/10635/84470
ISSN: 03769429
Appears in Collections:Staff Publications

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