A kind of high-performance tc11 tube and its preparation method
A TC11, high-performance technology, applied in the field of metal materials, can solve the problems of difficult to achieve the common improvement of strong plasticity of materials, difficult to ensure dimensional accuracy and type tolerance, secondary annealing and pickling or alkali cleaning, etc., to achieve high strength. , performance improvement, the effect of reducing the frequency of accidents
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[0037] 1. Ingot preparation:
[0038]Using grade 1 sponge titanium and additive alloys (aluminum vanadium alloy, aluminum molybdenum alloy, zirconium chips) ingredients and electrode block pressing, electrode block is combined welding to prepare electrode, and then two vacuum consumable arc melting to prepare Φ600mm TC11 titanium alloy casting Ingot, the chemical composition is: Al—6.46%, Mo—3.1%, Zr—1.78%, Si—0.297, Fe—0.095%, C—0.011%, N—0.061%, H—0.001%, O—0.13%, The balance is Ti, other impurity elements are <0.10% individually, and the total is <0.40%. The phase transition point was determined to be 1010°C by the temperature-increasing metallographic method.
[0039] 2. Bar blank forging
[0040] The Φ600mm TC11 titanium alloy ingot has been forged for a total of 6 times, and three times of forging above the phase transition point, a total of six upsetting and seven drawing forging to Φ365mm, and the total forging ratio is Y=7.59. Below the phase transition point, thre...
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