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Nickel-based high-temperature alloy powder and preparation method for applying nickel-based high-temperature alloy powder to hollow turbine blade

A nickel-based high-temperature alloy and turbine blade technology, applied in the field of additive manufacturing, can solve the problems of poor corrosion resistance of hollow turbine blades, and achieve the effect of overcoming the tendency of cracking, delaying crack propagation, and weakening crack generation

Active Publication Date: 2022-03-22
HARBIN INST OF TECH AT WEIHAI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention is to solve the deficiency of the above-mentioned background technology, and provides a nickel-based superalloy powder and a preparation method applied to hollow turbine blades. The nickel-based superalloy powder prepared by this method can print dense, crack-free hollow blades. Turbine blade components, and can overcome the problem of poor corrosion resistance of hollow turbine blades

Method used

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  • Nickel-based high-temperature alloy powder and preparation method for applying nickel-based high-temperature alloy powder to hollow turbine blade

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] (1) A nickel-based superalloy powder whose alloy composition is as follows: 25% Cr, 17.5% Co, 2.5% Al, 2.3% Ta, 2.6% Ti, 1.7% W, 1.5% Re, 0.1% C, 0.8 %Cb, 0.2%Zr, 0.005%B, 0.5%V are, and the balance is Ni for batching.

[0037] (2) the preparation of the nickel-base superalloy powder containing above-mentioned alloy composition, concrete steps are as follows:

[0038] The prepared alloy was first melted in a vacuum induction furnace, and then remelted in a vacuum consumable furnace to obtain a master alloy ingot with a diameter of 80 mm. Put the master alloy ingot into a high-temperature box-type resistance furnace, heat treatment at 1250°C for 20 hours to make its composition uniform, and then cool to room temperature with the furnace, and machine the cooled master alloy ingot into electrode rods, electrode rods The diameter is 80mm and the length is 680mm. Through the plasma rotating electrode powder making machine, vacuumize and fill argon gas, adjust the power of th...

Embodiment 2

[0044] (1) A nickel-based superalloy powder whose alloy composition is as follows: 30% Cr, 19% Co, 3.0% Al, 2.5% Ta, 2.8% Ti, 2.1% W, 2.5% Re, 0.15% C, 1% Cb, 0.3% Zr, 0.01% B, 0.7% V, the balance being Ni.

[0045] (2) The preparation method of the nickel-based superalloy powder containing the above-mentioned alloy components is the same as in Example 1.

[0046] (3) Utilize the nickel-base superalloy powder of above-mentioned alloy composition to prepare hollow turbine blade, concrete steps are as follows:

[0047] Step 1: Mix zirconia powder with 5w% single crystal sapphire fiber, and prepare composite material by plasma sintering method, wherein the sintering temperature is 1100°C, the sintering pressure is 30Mpa, and the sintering time is 10h, and the zirconia / alumina fiber composite material is obtained . The zirconia / alumina fiber composite was ball milled in a high energy ball mill. The rotational speed of the ball mill was set at 300rpm / min, the ball milling time w...

Embodiment 3

[0051] (1) A nickel-based superalloy powder, the alloy composition of which is as follows: 27.5% Cr, 18% Co, 2.7% Al, 2.4% Ta, 2.7% Ti, 1.9% W, 2.0% Re, 0.15% C, 0.9% Cb, 0.25% Zr, 0.01% B, 0.6% V, the balance being Ni.

[0052] (2) The preparation method of the nickel-based superalloy powder containing the above-mentioned alloy components is the same as in Example 1.

[0053] (3) Utilize the nickel-base superalloy powder of above-mentioned alloy composition to prepare hollow turbine blade, concrete steps are as follows:

[0054] Step 1: Mix zirconia powder with 5w% single crystal sapphire fiber, and prepare the composite material by plasma sintering method, wherein the sintering temperature is 1400°C, the sintering pressure is 70Mpa, and the sintering time is 13h, to obtain the zirconia / alumina fiber composite material . The zirconia / alumina fiber composite was ball milled in a high energy ball mill. The rotational speed of the ball mill was set at 300rpm / min, the ball mil...

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Abstract

The invention provides nickel-based high-temperature alloy powder and a preparation method for applying the nickel-based high-temperature alloy powder to a hollow turbine blade, and solves the technical problem of cracking in the process of preparing the hollow turbine blade through selective laser melting. The Ni-Cr-Co-Ti-W alloy material comprises the following components in percentage by weight: 25% to 30% of Cr, 17.5% to 19% of Co, 2.5% to 3.0% of Al, 2.3% to 2.5% of Ta, 2.6% to 2.8% of Ti, 1.7% to 2.1% of W, 1.5% to 2.5% of Re, 0.1% to 0.15% of C, 0.8% to 1% of Cb, 0.2% to 0.3% of Zr, 0.005% to 0.01% of B, 0.5% to 0.7% of V and the balance of Ni. The method can be widely applied to the technical field of additive manufacturing.

Description

technical field [0001] The application belongs to the technical field of additive manufacturing, and more specifically, relates to a nickel-based superalloy powder and a method for preparing a hollow turbine blade. Background technique [0002] Hollow turbine blades are the core components of aero-engines and gas turbines, and have far-reaching significance for national economic development and national defense security. Because of its complex structure and high precision requirements, it is difficult to manufacture. It is known as the "Pearl on the Crown". In the process of preparing hollow turbine blades, the process used is mainly investment casting process, but this process has low yield. , The poor precision of finished products and other problems have caused many problems in the production of hollow turbine blades in my country. Aiming at the problems of long manufacturing period, complicated process and low yield of the traditional investment casting method of hollow ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C30/00B22F1/00B22F9/14B33Y70/10B22F10/28B22F5/04C22C49/02C22C49/14B33Y10/00B33Y80/00B22F10/50B22F12/17C22C101/06
CPCC22C19/055C22C30/00B22F9/14B33Y70/10B22F10/28B22F5/04C22C49/08C22C49/14B33Y10/00B33Y80/00B22F10/50B22F12/17Y02P10/25
Inventor 张鹏朱强王敏王传杰陈刚
Owner HARBIN INST OF TECH AT WEIHAI
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