Grain boundary diffusion effect on Ti3Al alloy oxidation
The paper presents a model of grain-boundary diffusion, supplemented by the equations of oxide formation kinetics. Conditions are considered isothermal. The alloy material in the model is represented by alternating intermetallic grains with a clear selection of triple junctions between them. Diffusion and kinetic properties of grains and boundaries may differ. The model is used to describe the process of an intermetallic alloy oxidation in bulk and along grain boundaries. The distributions of the concentrations of elements and oxides, and the change in the average integral concentrations of oxides were studied with varying reaction rate constants in the grains and in the vicinity of the boundaries.
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Keywords
grain boundary diffusion, intermetallic oxidation, modelingAuthors
| Name | Organization | |
| Chepak-Gizbrekht M.V. | Institute of Strength Physics and Materials Science of SB RAS | mv2016@mail.ru |
| Knyazeva A.G. | Institute of Strength Physics and Materials Science of SB RAS | anna-knyazeva@mail.ru |
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