Original scientific paper

Analysis of the influence of chemical composition and temperature on mechanical properties of superalloys NIMONIC 80A

R. Sunulahpašić ; University of Zenica, Faculty of Metallurgy and Materials Science, Zenica, Bosnia and Herzegovina
M. Oruč ; University of Zenica, Zenica, Bosnia and Herzegovina
M. Hadžalić ; University of Zenica, Metallurgical Institute „Kemal Kapetanović“, Zenica, Bosnia and Herzegovina
A. Gigović-Gekić ; University of Zenica, Faculty of Metallurgy and Materials Science, Zenica, Bosnia and Herzegovina

Abstract

Superalloys Nimonic 80A is a wrought nickel base alloy (min. 65 % Ni) and chromium (20 %), with minor additions of carbon, cobalt and iron, as well as major alloying elements of aluminum (1 to 1,8 %) and titanium (1,8 to 2,7 %). Chemical composition of the alloy Nimonic 80A has a dominant influence on its mechanical and technological properties. Increasing of the temperature also has a large influence on the mechanical properties of superalloy Nimonic 80A Investigations which were carried out have included chemical testing and testing of mechanical properties of superalloy Nimonic 80A at room and higher temperatures. Regression analysis was done on the base of chemical analyses and results of mechanical properties. The results of regression analysis are equations by which on the basis of known chemical composition, ie content of main alloying elements Al, Ti and Co, the mechanical properties of materials at room and higher temperatures can be predicted.

Keywords

Nimonic 80A; chemical composition; temperature; mechanical properties; regression analysis

Hrčak ID:

104363

URI

https://hrcak.srce.hr/104363

Publication date:

1.1.2014.

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