Abstract
Eutectic alloys have a wide range of applications and have been studied in numerous experiments and simulations. However, there is no model available to describe the contribution from the morphology on strength of the eutectic structure. The model for eutectic strengthening σsp = kspf λ−1/2 is derived from the Brown model and Taylor-Orowan's equation. The equation reveals the relationship between yield strength and eutectic features including slip parameter, effective shear modulus, second phase volume fraction and eutectic spacing. The equation predictions agree well with the experimental measurements for both Al-Ce and Fe28Ni18Mn33Al21 alloys. The model may effectively predict the yield strength of eutectic alloys and provide insights for eutectic strengthening.
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