EVALUATION OF THE INFLUENCE OF ALLOYING ELEMENTS ON THE INTERFACIAL INTERACTION OF THE COMPONENTS OF CAST ALUMINUM MATRIX COMPOSITES BY CHANGING THE THERMODYNAMIC ACTIVITY
Abstract
The nature of the interfacial interaction of aluminum melts with exogenous reinforcing components in the production of aluminum matrix composite materials by foundry-metallurgical methods can be significantly changed by adding various alloying elements. In this regard, consideration of the influence of alloying of matrix alloys on the thermodynamic activity of components in melts can be treated as one of the criteria for choosing alloying elements during designing the compositions of cast aluminum matrix composites. At the same time, experimental estimates of the thermodynamic activity of the components of complex systems are associated with significant time and material resources, are characterized by high labor intensity and a large spread of the obtained values. The development and verification of computational models for predicting the thermodynamic behavior of multicomponent melts can be considered as a fairly effective approach to determining their thermodynamic characteristics. In the present work, an assessment of the thermodynamic activity of alloying components of matrix aluminum alloys in the production of cast composite materials based on the Al – Si – X ternary system (where X = Si, Cu, Mg, Zn, Mn, Ni, Ti, Fe) was carried out using the Wilson equation and calculated values of adjustable parameters according to the extended Miedema model. The calculation forms of the equations for determining the activity coefficients of the components are implemented in the MS Excel software package. The results obtained can be useful in predicting the chemical stability of exogenous reinforcing components in matrix aluminum melts.
About the Authors
Evgeny S. Prusov
Vladimir State University named after Alexander and Nikolay Stoletovs
Russian Federation
Russian Federation
Cand. Sci. (Tech.), Assoc. Prof., Associate Professor of the Department of Functional and Constructional Materials Technology
Ivan V. Shabaldin
Vladimir State University named after Alexander and Nikolay Stoletovs
Student, Technician of the Project Team Direction
Vladislav B. Deev
National Research Technological University "MISiS"
Dr. Sci. (Eng.), Prof., Chief Researcher of the Laboratory "Ultrafine-grained Metallic Materials"
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For citations:
Prusov E., Shabaldin I., Deev V. EVALUATION OF THE INFLUENCE OF ALLOYING ELEMENTS ON THE INTERFACIAL INTERACTION OF THE COMPONENTS OF CAST ALUMINUM MATRIX COMPOSITES BY CHANGING THE THERMODYNAMIC ACTIVITY. Bulletin of the Siberian State Industrial University. 2022;(3):37-44. (In Russ.)
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