Determining composition of a gamma precipitation strengthening Ni base superalloy

摘要

A method of making a gamma ' precipitation strengthening type Ni base superalloy and apparatus for determining the proportion of constituent elements of the alloy are disclosed. The apparatus includes a memory which stores proportions of constituent elements of the alloy, and an input unit for entering the composition of an alloy and storing it into the memory or for entering required performance data. A calculating unit employs a structural factor equation and a property equation and calculates structural factors from the stored proportions and calculates properties of the alloy based on the stored proportions and the calculated structural factors and displays them and/or outputs them for production process control. By an iterative search process alloys can be made having desired properties.