What is TC21?TC21 is a high-strength + type two-phase titanium alloy, which belongs to the high-strength structure newly developed by the country for aviation
Material. Its chemical composition is extremely similar to the American Ti-6AL-2SN-4ZR-2MO and the Russian BT18Y.
The nominal composition of TC21 alloy is Ti-6Al-2SN-4ZR-2MO, which is a titanium alloy for aviation. TC21 alloy has a high
specific strength, thermal stability and good low-temperature toughness. TC21 titanium alloy is mainly used in the manufacture of aircraft engine compressors
Components, which are important materials for new engines.
TC21, the raw material is TC21 alloy, and its phase change is 950 960The primitive tissue is mainly composed of isoaxial, globular primagenesis
Phases, fine needle-like secondary phases and matrix composition.
The nominal component is Ti-6Al-2Zr-2SN-2Mo-15Cr-2NB is the comprehensive mechanical properties of China's high-strength and high-toughness titanium alloy.
With one of the best titanium alloys, it can be used for wing joint structural parts, fuselage and landing gear connection frames, and hangings of aviation aircraft.
Manufacture of engine joints and other parts, as well as important or critical load-bearing parts that require high strength and durability.
The effect of solution temperature on the microstructure of TC21 titanium alloy was studied in 880 950.
Ringing regularity. The effects of OM, TEM and EBSD orientation analysis on the medium shape of TC21 titanium alloy were studied by heat treatment temperature.
The law of influence of the lumpy phase. The results showed that the massive phase was observed at 930,
950 No massive phases were observed. EBSD orientation analysis showed that the bulk phase was satisfied with its neighboring phases.
Burgers orientation relationship. The microhardness reaches the minimum value after 900 solution, and increases when the temperature is higher than 900.
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