Microstructure characterization and hot corrosion mechanism of as-cast and heat treated high Nb containing TiAl alloy
Source abstract
Abstract
Abstract TiAl alloys possess broad development prospects in aerospace industry. To characterize hot corrosion behavior in service environment and provide comprehensive assessment of high Nb containing TiAl alloys, microstructure evolution and hot corrosion mechanism of them were focused. Ti-44Al-9Nb-0.5Si (TA1) and Ti-44Al-9Nb-0.5Si-0.3Y (TA2) solidified via β phase; β/α transformation took place after β solidification; α was finally deposed to α2+γ lamellae. Compared with TA1, TA2 had better hot corrosion resistance due to its finer lamellar structure. Based on Ti-Al-9Nb-0.5Si vertical section, heat treatment was conducted. After heat treatment, equiaxed γ grains, α2 grains and Ti5(Si,Al)3 precipitations appeared.
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Research context
OpenAlex topics: Intermetallics and Advanced Alloy Properties · MXene and MAX Phase Materials · Semiconductor materials and interfaces
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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