Method for controlling re-crystallization of directionally solidified nickel base high-temperature alloy by using coating method
A nickel-based superalloy, directional solidification technology, applied in chemical instruments and methods, crystal growth, post-processing details, etc., can solve problems such as inapplicability
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Embodiment 1DZ125
[0016] Example 1 DZ125L directionally solidified alloy 1# coating controls recrystallization.
[0017] The DZ125L directionally solidified nickel-based nickel-based superalloy plate was prepared by the directional solidification equipment, and a 2×12×12mm square was cut from the plate by wire cutting. Polish the surface of 12×12 (direction of oriented columnar crystal growth), and perform sandblasting treatment with a sandblasting device. Sandblasting parameters are as follows: sandblasting pressure is 0.3MPa, sandblasting time is 1min, and the sand particles are SiO 2 Glass ball.
[0018] Next, the coating is applied using arc ion plating equipment. During the coating process, the vacuum degree is 10 -2 Pa, first deposit a layer of Zr on the sample, and then deposit a layer of NiCoCrAlYSiB. The deposition time of Zr layer is 100min, and the time of NiCoCrAlYSiB layer is 2h. After deposition, the coated samples were subjected to stress relief annealing at 800 °C / 10 h. Th...
Embodiment 2
[0019] Example 2 DZ125L directionally solidified alloy 2# coating controls recrystallization.
[0020] The DZ125L directionally solidified nickel-based nickel-based superalloy plate was prepared by the directional solidification equipment, and a 2×12×12mm square was cut from the plate by wire cutting. Polish the surface of 12×12 (direction of oriented columnar crystal growth), and perform sandblasting treatment with a sandblasting device. Sandblasting parameters are as follows: sandblasting pressure is 0.3MPa, sandblasting time is 1min, and the sand particles are SiO 2 Glass ball.
[0021] Next, the coating is applied using arc ion plating equipment. During the coating process, the vacuum degree is 10 -2 Pa, first deposit a layer of graphite on the sample, the deposition time is 1h, and then deposit a layer of NiCoCrAlYSiB, the deposition time is 8h. After deposition, the coated samples were subjected to stress relief annealing at 800°C / 10h. Then these samples were subjec...
Embodiment 3
[0022] Example 3 DZ125L directionally solidified alloy 3# coating controls recrystallization.
[0023] The DZ125L directionally solidified nickel-based nickel-based superalloy plate was prepared by the directional solidification equipment, and a 2×12×12mm square was cut from the plate by wire cutting. Polish the surface of 12×12 (direction of oriented columnar crystal growth), and perform sandblasting treatment with a sandblasting device. Sandblasting parameters are as follows: sandblasting pressure is 0.3MPa, sandblasting time is 1min, and the sand particles are SiO 2 Glass ball.
[0024] Next, the coating is applied using arc ion plating equipment. During the coating process, the vacuum degree is 10 -2 Pa, first deposit a layer of CrC on the sample, the deposition time is 1h, and then deposit a layer of Cr 2 o 3 , the deposition time is 30min, and finally deposit a layer of NiCoCrAlYSiB, the deposition time is 8h. After deposition, the coated samples were subjected to ...
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