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Titanium alloy VT9 belongs to the type α+β-alloys. Developed в1960 Is the first heat-treatable alloy of titanium, developed by the Soviet industry. Production of normalized GOST 19807−74, 90013−81 OST. The main alloying elements are aluminium, about 7%, molybdenum up to 3%, zirconium up to 2%. Al contributes to the hardening of the α+β phase, and the zirconium and molybdenum increase the resistance. Heat treatment increases the strength of the alloy by 15 — 20% without loss of ductility. The presence of β-phase in the annealed alloy reaches 10%. Double isothermal annealing provides an optimal combination of qualities.
Percentage composition of the brand VT9 according to GOST 19807−91
|The 5.8−7||≤0,1||0,2−0,35||≤0,25||2,8−3,8||1−2||≤0,05||≤0,15||≤0,015||86,15−89,9||≤0.3 mm|
The Titan is a basis; it is the percentage specified in the table. The melting point of the alloy almost 1020 °C. the Density of 4.48 g/cm3.
|7% Al, the doping with zirconium and molybdenum increases the heat resistance and strength in comparison with rafting VT6. The maximum operating t.°+ 500°. The optimum combination of qualities provides a double and isothermal annealing. The content of β-phase in the annealed alloy = 10%. Hardening is achieved by aging and quenching.||Discs, blades and other compressor components, valves, fans, details of GTE||Deformed in the hot state. Processed with pressure and welded worse than VT6.|
Pipe brand titanium VT9 relevant in the mechanical engineering and motor industry parts for compressors and gas turbine engines, in oil and gas, processing industries for piping, pumps, parts of valves.
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