Damage Model of a Particle Reinforced TRIP-Steel Matrix Composite

Abstract eng:
The paper considers a particle reinforced metal matrix composite based on a steel exhibiting TRansformation Induced Plasticity (TRIP-effect). The main focus is on deriving a macroscopic, phenomenological model for the material. On the one hand, strain hardening mechanisms due to particle reinforcement and TRIP-effect have to be included. Otherwise, different damage mechanisms are primary influencing factors on the material’s performance. With help of cell model simulations, the influence of stress state on the mentioned mechanisms is investigated. The resulting data sets are used to specify and calibrate the proposed macroscopic damage model. A good agreement between the cell model simulation and the calibrated macroscopic model is found in terms of macroscopic stress-strain response.

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