A kind of powder solder for nickel-based single crystal superalloy connection and its preparation method and application
A high-temperature alloy, nickel-based single crystal technology, used in welding equipment, metal processing equipment, welding/cutting media/materials, etc., can solve the problems of low high temperature performance, can not meet the requirements of use, etc., achieve high brazing temperature, flow Moderate property, small corrosion effect
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Embodiment 1
[0031] The base material to be welded in this embodiment is a nickel-based superalloy CMSX-4, and the chemical composition of the alloy is (wt.%): Ni-9Co-6.5Cr-6W-6.5Ta-5.6Al-3Re-1Ti-0.6Mo.
[0032] The chemical composition of the solder is (wt.%): Ni-14Cr-9.5Co-4Al-4W-4Mo-5Ti-0.1Si-0.8B.
[0033] Brazing filler metal preparation method: mix the raw materials with a purity greater than 99.99% in proportion and put them into a vacuum arc melting furnace to melt them into alloy ingots. The melting process is: 1590°C / 1min→1550°C / 10min→1350°C / 10min→1450°C Pouring; after that, the smelted alloy ingot is melted into a metal liquid flow with a temperature higher than 1400 °C, and the metal liquid flow is impacted with argon gas to atomize it into fine droplets, which form alloy powder after rapid cooling, and sieve out no more than 200 mesh powder.
[0034] Before welding, the solid solution nickel-based superalloy CMSX-4 is processed into Use No. 800 sandpaper to grind the surfac...
Embodiment 2
[0037] The base material to be welded in this embodiment is a nickel-based superalloy CMSX-4, and the chemical composition of the alloy is (wt.%): Ni-9Co-6.5Cr-6W-6.5Ta-5.6Al-3Re-1Ti-0.6Mo.
[0038] The chemical composition of the solder is (wt.%): Ni-14Cr-9.5Co-4Al-4W-4Mo-5Ti-0.1Si-1B.
[0039] Brazing filler metal preparation method: mix the raw materials with a purity greater than 99.99% in proportion and put them into a vacuum arc melting furnace to melt them into alloy ingots. The melting process is: 1590°C / 1min→1550°C / 10min→1350°C / 10min→1450°C Pouring; after that, the smelted alloy ingot is melted into a metal liquid flow with a temperature higher than 1400 °C, and the metal liquid flow is impacted with argon gas to atomize it into fine droplets, which form alloy powder after rapid cooling, and sieve out no more than 200 mesh powder.
[0040] Before welding, the solid solution nickel-based superalloy CMSX-4 is processed into Use No. 800 sandpaper to grind the surface t...
Embodiment 3
[0043] The base material to be welded in this embodiment is a nickel-based superalloy CMSX-4, and the chemical composition of the alloy is (wt.%): Ni-9Co-6.5Cr-6W-6.5Ta-5.6Al-3Re-1Ti-0.6Mo.
[0044] The solder composition is (wt.%): Ni-12Cr-9.5Co-3.5Al-4.5W-3.5Mo-3Ti-3Si-0.8B.
[0045] Brazing filler metal preparation method: mix the raw materials with a purity greater than 99.99% in proportion and put them into a vacuum arc melting furnace to melt them into alloy ingots. The melting process is: 1590°C / 1min→1550°C / 10min→1350°C / 10min→1450°C Pouring; after that, the smelted alloy ingot is melted into a metal liquid flow with a temperature higher than 1400 °C, and the metal liquid flow is impacted with argon gas to atomize it into fine droplets, which form alloy powder after rapid cooling, and sieve out no more than 200 mesh powder.
[0046] Before welding, the solid solution nickel-based superalloy CMSX-4 is processed into Use No. 800 sandpaper to grind the surface to be weld...
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