Calculation of yield strength in nickel base single crystal superalloys

摘要

In this article, a quantiative equation was established to determine the relationship be- tween yield strength and composition in nickel base SC superalloys based on Copley-Kear precipitation strengthening model. The yield strength of two well-known commercial SC superalloys calculated by this equation was compared with experimental data. It was found that the calculated yield strength of these two alloys was fairly correspondent with experimental results reported in the references.