Abstract

One of the possible ways to increase the functional properties of titanium-based composites is the use of additional components in the form of solid inclusions of oxides, carbides, etc. The key task in this case is to achieve a uniform distribution of such inclusions in the structure of the material. This study demonstrates that this problem can be more effectively solved at the stage of preparing the powder mixture from which a titanium matrix composite is subsequently obtained. The paper presents the results of a study of the structure and mechanical properties of sintered powder materials of the Ti-Al-Fe-O-C system using two procedures for mixing the initial components. In the first case, traditional mixing of titanium, aluminum, soot and iron oxide Fe2O3 powders was used, and in the second case, a two-stage procedure was used with preliminary mechanical activation of the powder composition Al + Fe2O3 and the subsequent addition of titanium and soot powders to the product of this treatment. Analysis of the structure formation and mechanical properties of sintered compacts from the studied powder mixtures showed the advantage of the two-stage option in terms of the formation of a denser structure in the samples with minimal residual porosity and higher values of compressive strength.

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