An estimation of three-dimensional finite element crystal geometry model for the strength prediction of particle-reinforced metal matrix composites

Residual stress and damage development in the aluminium alloy EN AW-6061 particle reinforced with Al2O3 under thermal fatigue loading

“…(3) Thermally induced, local deformation inside the matrices of the MMCs near the interfaces due to CTE mismatch, which results in bulk-averaged residual tensile stresses in the matrix after cooling [36,37]. Going more into detail, high local residual tensile stresses near the interfaces are facing slight residual compressive stresses far from the interfaces [30]. The effect of thermally induced local deformation on the averaged residual stresses increases with increasing V p due to an increasing amount of deformations adaptation between particles and matrix.…”

“…All of them undergo thermal fatigue (TF) loading during service. Nevertheless, the deformation, lifetime and damage behaviour during thermal fatigue loading including the complex interactions between reinforcement and matrix [9,30] still have to be determined in detail. These interactions result in additional mechanical loading due to the thermal mismatch between matrix and reinforcements (CTE mismatch) and therefore, cause enormous plastic deformations of the matrix close to the interfaces.…”