The influence of zirconium additives on the structure and properties of nickel aluminide, obtained by the SPS method
Keywords:
intermetallic, spark plasma sintering, mechanical properties, nickel aluminide, alloying, zirconiumAbstract
This article presents the results of a study of the effect of the zirconium content on the structure and mechanical properties of the polycrystalline intermetallic compound Ni3Al obtained by spark plasma sintering of a powder mixture. The mixtures based on nickel, aluminum, and zirconium powders were used for the manufacture of samples for sintering. Three compositions were prepared with varying zirconium concentrations (0.1 wt.%, 1 wt.% and 5 wt.%). It was found that the relative density of sintered materials of all three compositions is 97%. The predominant homogeneity of the structure of sintered material was established during metallographic studies.An analysis of the results of strength tests of sintered materials indicates a positive effect of zirconium on the bending strength of the nickel aluminide, with a concentration of zirconium in
the alloy equal to 1 wt.%.
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