The IUT AM Symposium on "Micromechanics of Plasticity and Damage of Multiphase Materials" was held in Sevres, Paris, France, 29 August - 1 September 1995. The Symposium was attended by 83 persons from 18 countries. In addition 17 young French students attended the meeting. During the 4 day meeting, a total of 55 papers were presented, including 24 papers in the poster sessions. The meeting was divided into 7 oral and 3 poster sessions. The 7 oral sessions were the following: - Plasticity and Viscoplasticity I and II; - Phase transformations; - Damage I and II; - Statistical and geometrical aspects; - Cracks and interfaces. Each poster session was introduced by a Rapporteur, as follows: - Session I (Plasticity and Viscoplasticity): G. Cailletaud; - Session 2 (Damage): D. Franc;:ois; - Session 3 (Phase transformation; statistical and geometrical aspects): D. Jeulin. The main purpose of the Symposium was the discussion of the state of the art in the development of micromechanical models used to predict the macroscopic mechanical behaviour of mUltiphase solid materials. These materials consist of at least two chemically different phases, present either initially or formed during plastic deformation, when a strain-induced phase transformation takes place. One session was devoted to the latter case. Continuously strengthened composite materials, containing long fibers, were out of the scope of the Symposium.

Inhalt
Plasticity and Viscoplasticity.- On non-local flow theories that preserve the classical structure of incremental boundary value problems..- On strain-rate sensitivity of matrices reinforced with ceramic particles.- Influence of the micro-arrangement on matrix and fiber damage in continuously reinforced metal matrix composites..- Morphological effects at the local scale in two-phase materials; some experimental evidences and tentative modeling..- Modeling of the overall behavior of multiphase materials by the effective field method..- Pseudoplasticity of fibrous composite materials; inelastic response of laminates with interfacial decohesion..- Modelling the cyclic behaviour of two-phase single crystal nickel-base superalloys..- Experimental evidences of thermoelastoplastic strain incompatibilities in microheterogeneous metal based materials..- A critical evaluation for various nonlinear extensions of the self-consistent model..- Creep and yield behaviour of semicrystalline polyethylene in uniaxial tension..- Finite-element simulation of elastoplastic properties of two-phase composites reinforced by particles..- Constitutive equations of plastic anisotropic composite medium..- Mechanical behaviour of multiphase materials; numerical simulations and experimental comparisons..- The mechanical instability of the metal substructure in thermodynamically stable and unstable phases..- On the micromechanics of the deformation of monocrystalline nickel-base superalloys; effects of lattice misfit and ?/?? morphology..- Self-consistent modelling of elastic-viscoplastic multiphase media..- Micromechanics of localized fracture in inelastic solids under dynamic loading processes..- A micro-macro structural approach of the cyclic behaviour of a two-phase alloy..- Overall propertiesof nonlinear composites; remarks on secant and incremental formulations..- Damage.- Statistical modelling of damaging duplex stainless steels..- Application of micro-mechanical constitutive models for structural steels..- Plasticity modelling of porous aluminum..- Crystallographic growth of cavities in zirconium..- Integration of physical mesomechanisms to macroscopic modelling; a coupled viscoelastic-viscoplastic finite strain model for a rubberlike particulate composite..- Simulation of the behaviour of two large scale tests using ductile damage mechanics models derived from small scale laboratory data..- Failure mode interaction in metalmatrix composites..- Constitutive relations for porous materials: the effect of changing void shape and orientation..- Microcrack nucleation in different kinds of artificial ice during uniaxial compression experiments..- Simulation of Co binder failure in WC-Co hardmetals..- Micromechanical approach to modelling of damage process in semi-brittle ceramics..- The damage mechanisms in rubber toughened PMMA..- Micromechanics of plasticity and damage in an Al/SiC metal matrix composite..- Damage in aged austenoferritic alloys..- The influence of particulate spatial distribution on damage accumulation in metals and ceramics..- Transition from ductile tearing to cleavage fracture; a statistical model..- Phase transformations.- Micromechanical approach by finite elements to the microstructural evolutions and mechanical behaviour of two-phase metallic alloys..- Incremental micromechanical modelling for the transformation induced plasticity..- Multiscale treatment of the martensitic transformation in a single crystal..- Some relations for finite inelastic deformation of microheterogeneous materials with moving discontinuity surfaces..- A micromechanical study on strain-induced transformation plasticity in low-alloy TRIP steels..- Computer simulation of dislocation structure evolution and microdeformation effects during ??? transformation in palladium-hydrogen systems..- Statistical and geometrical aspects.- Fractal concepts for solid mechanics.- Microstructural inhomogeneity and the strength of particulate metal matrix composites..- The contact and sliding friction of cellular materials..- Statistical theory of microplasticity of two-phase composites..- Reinforcement, fracture and ductility in spherereinforced Al-matrix composites..- Towards scale-dependent constitutive laws for plasticity and fracture of random heterogeneous materials..- Cracks and interfaces.- Microdamage observations in dynamically fractured Ti-10V-2Fe-3Al microstructures and preliminary modeling attempts..- Behaviour analysis of pre-fatigue damaged aluminum alloys under high velocity and quasi-static tension..- Interface plasticity and micro-crack extension in an inclusion reinforced solid..- Near surface cracks in transformation toughened ceramics subjected to hertzian contact load..