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A kind of nickel-based superalloy powder and preparation method applied 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 effects of overcoming cracks, suppressing crack generation, and delaying crack growth

Active Publication Date: 2022-05-27
HARBIN INST OF TECH AT WEIHAI
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  • Summary
  • 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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  • A kind of nickel-based superalloy powder and preparation method applied to hollow turbine blade

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] (1) A nickel-based superalloy powder, the 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, and the residual amount is Ni for batching.

[0037] (2) The preparation of nickel-based superalloy powder containing the above alloy components, the specific steps are as follows:

[0038]The prepared alloy is first melted in a vacuum induction furnace, and then remelted in a vacuum self-consuming furnace to obtain a parent alloy ingot with a diameter of 80mm. The mother alloy ingot is put into a high-temperature box resistance furnace, heat treated at a temperature of 1250 ° C for 20h, so that its composition is uniform, and then cooled to room temperature with the furnace, the cooled mother alloy ingot is machined into an electrode rod, the diameter of the electrode rod is 80mm, and the length is 680mm. Through the plasma rotary electrode mill, vacuum filling argon, adjust the power of the plasma ...

Embodiment 2

[0044] (1) A nickel-based superalloy powder, the 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 margin is Ni.

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

[0046] (3) The use of nickel-based superalloy powder of the above alloy composition to prepare hollow turbine blades, the specific steps are as follows:

[0047]Step 1: Take zirconia powder mixed with 5w% single crystal sapphire fiber, and prepare the composite material by plasma sintering method, where 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 is placed in a high-energy ball mill for ball milling. The speed of the ball mill is set to 300rpm / min, the ball milling time is 10h, and the ball-to-m...

Embodiment 3

[0051] (1) A nickel-based superalloy powder, the alloy composition 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 margin is Ni.

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

[0053] (3) The use of nickel-based superalloy powder of the above alloy composition to prepare hollow turbine blades, the specific steps are as follows:

[0054] Step 1: Take zirconia powder mixed with 5w% single crystal sapphire fiber, and prepare the composite material by plasma sintering method, where the sintering temperature is 1400 °C, the sintering pressure is 70Mpa, and the sintering time is 13h, and the zirconia / alumina fiber composite material is obtained. The zirconia / alumina fiber composite is placed in a high-energy ball mill for ball milling. The speed of the ball mill is set to 300rpm / min, the ball milling time is 15h, and the ball...

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Abstract

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

Description

Technical field [0001] The present application belongs to the field of additive manufacturing technology, more specifically, relates to a nickel-based superalloy powder and a preparation method for applications in hollow turbine blades. Background [0002] Hollow turbine blades are the core components of aircraft engines and gas turbines, which have far-reaching significance for national economic development and national defense and security. Because of its complex structure, high precision requirements and difficult to manufacture, known as the "crown of the pearl" in the preparation of hollow turbine blades, the process used is mainly the investment precision casting process, but this process, with low yield, poor precision of finished products and other issues, resulting in China in the production of hollow turbine blades there are many problems. In view of the problems of long manufacturing cycle, complex process and low yield of traditional investment casting method of hollo...

Claims

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Application Information

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Patent Type & Authority Patents(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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