Improvement in oxidation resistance of TiAl alloys by in-situ precipitation of Ti2AlC at the interface of α2 and γ lamellae
Y Wang, C Liu, T Ma, Y Liu, Y Zhang, L Zhou - Corrosion Science, 2022 - Elsevier
Y Wang, C Liu, T Ma, Y Liu, Y Zhang, L Zhou
Corrosion Science, 2022•ElsevierHerein, in-situ sintered micro-nano Ti 2 AlC/TiAl composite with fully lamellar structures were
designed by spark plasma sintering to improve the high-temperature oxidation resistance of
TiAl alloys. The Ti 2 AlC/TiAl composite exhibited lower oxidation rate and thinner oxide
scale enriched Al 2 O 3 compared to TiAl alloy after 750℃ and 850℃ oxidation, suggesting
that oxidation resistance of the Ti 2 AlC/TiAl composite was improved. The superior
oxidation resistance of the Ti 2 AlC/TiAl composite was mainly attributed to Ti 2 AlC particles …
designed by spark plasma sintering to improve the high-temperature oxidation resistance of
TiAl alloys. The Ti 2 AlC/TiAl composite exhibited lower oxidation rate and thinner oxide
scale enriched Al 2 O 3 compared to TiAl alloy after 750℃ and 850℃ oxidation, suggesting
that oxidation resistance of the Ti 2 AlC/TiAl composite was improved. The superior
oxidation resistance of the Ti 2 AlC/TiAl composite was mainly attributed to Ti 2 AlC particles …
Abstract
Herein, in-situ sintered micro-nano Ti2AlC/TiAl composite with fully lamellar structures were designed by spark plasma sintering to improve the high-temperature oxidation resistance of TiAl alloys. The Ti2AlC/TiAl composite exhibited lower oxidation rate and thinner oxide scale enriched Al2O3 compared to TiAl alloy after 750 ℃ and 850 ℃ oxidation, suggesting that oxidation resistance of the Ti2AlC/TiAl composite was improved. The superior oxidation resistance of the Ti2AlC/TiAl composite was mainly attributed to Ti2AlC particles hindered the diffusion of O atoms and stabilized the Al-rich oxide layer by the formation of more Ti-Al-N layers due to the nitridation susceptibility of Ti2AlC.
Elsevier
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