DETERMINING INFLUENCE OF ALLOYING ELEMENTS ON PROPERTIES OF ALLOYS BY ROBUST EXPERIMENT

The paper presents an approach to determine the influence of alloying elements on the properties of iron-based alloys by a robust numerical experiment. The study is based on a database of 90 alloys with relationship between the chemical composition and mechanical and plastic properties. The limit of yield strength (Re) and elongation (A) are assumed as optimizing parameters. The properties of the alloys used in the database are under heat-treated condition after low temperature hardening and tempering applied. In terms of the mission of any performance steels were identified nonlinear regression relationships. As a result, the proposed procedure shows how to specify the amount of alloying elements on iron alloys based on the Taguchi method. The originality of the solution lies in application of the Taguchi method for simultaneous multiple criteria within a task. Keywwords: ferrous alloys, robust numerical experiment, Taguchi method, modelling and optimization properties