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A kind of additive manufacturing nickel-based superalloy and its preparation method and application

A nickel-based superalloy and additive manufacturing technology, applied in additive manufacturing, additive processing, mechanical equipment, etc., can solve the problem that it is difficult to meet the use requirements of advanced aerospace engine hot-end components, is not suitable for additive manufacturing processes, and is not suitable for temperature-bearing. Insufficient capacity and other problems, to achieve the effect of good printing process performance, excellent high-temperature mechanical properties and printing process performance, and uniform organization

Active Publication Date: 2022-08-02
CENT OF EXCELLENCE FOR ADVANCED MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above-mentioned superalloys with low γ′ phase volume fraction are widely used in additive manufacturing, their temperature bearing capacity is insufficient, not exceeding 650 °C, and it is difficult to meet the requirements of the hot end parts of advanced aerospace engines.
On the contrary, although the high-temperature gold with high γ′ phase volume fraction has high temperature bearing capacity, it is prone to cracking during the additive manufacturing process and is not suitable for the additive manufacturing process, such as IN939, IN738LC and MAR-M247 alloys.

Method used

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  • A kind of additive manufacturing nickel-based superalloy and its preparation method and application
  • A kind of additive manufacturing nickel-based superalloy and its preparation method and application
  • A kind of additive manufacturing nickel-based superalloy and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] An additively manufactured nickel-based superalloy, comprising the following components by weight percentage:

[0056] Al 3.0%; Ti 2.0%; Nb 2.2%; Ta 1.0%; Co 15.0%; Cr 15%; Mo 2.0%; W 3.0%; C 0.1%; B 0.01%; Ni balance.

[0057] A preparation method for additively manufactured nickel-based superalloy, comprising the following preparation steps:

[0058] S1: Alloy ingredients are batched according to the formula amount;

[0059] S2: The prepared alloy composition is smelted in a vacuum induction furnace, refined at 1560°C for 5 minutes, and then poured at a high temperature, the pouring temperature is 1430°C, and the shell temperature is 900°C, and the master alloy is obtained after pouring;

[0060] S3: Atomizing and solidifying the master alloy by the method of vacuum inert gas atomization to obtain alloy powder, the particle size of the powder is 15 μm-45 μm;

[0061] S4: The alloy powder is additively manufactured by the laser powder coating process to obtain a supe...

Embodiment 2

[0067] The difference from Example 1 is that in Example 2, Ti is 3.0%, Mo is 3.0%, and W is 4.0%. Specifically:

[0068] An additively manufactured nickel-based superalloy, comprising the following components by weight percentage:

[0069] Al 3.0%; Ti 3.0%; Nb 2.2%; Ta 1.0%; Co 15.0%; Cr 15%; Mo 3.0%; W 4.0%; C 0.1%; B 0.01%; Ni balance.

[0070] The preparation method is the same as that of Example 1.

Embodiment 3

[0072] Different from Example 1, the Ti of Example 3 is 3.0%, and the Co is 18.0%, specifically:

[0073] An additively manufactured nickel-based superalloy, comprising the following components by weight percentage:

[0074] Al 3.0%; Ti 3.0%; Nb 2.2%; Ta 1.0%; Co 18.0%; Cr 15%; Mo 2.0%; W 3.0%; C 0.1%; B 0.01%; Ni balance.

[0075] The preparation method is the same as that of Example 1.

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Abstract

The invention discloses an additive manufacturing nickel-based superalloy, which comprises the following components by weight percentage: Cr 15.0%-20.0%; Co 15.0%-21.0%; Al 2.0%-3.0%; Ti 2.0%-2.0% 3.0%; Ta1.0%~1.5%; W 2.0%~4.9%; Mo 1.3%~4.0%; Nb 1.0%~2.2%; C 0.005%~0.15%; B 0.003%~0.03%; Ni balance. The additive-manufactured nickel-based superalloy of the present invention has excellent high-temperature performance and hot-corrosion resistance through composition design optimization, and also has good additive-manufactured printing process performance, which can meet the use requirements of engine hot-end components. The invention also discloses the preparation method and application of the additive manufacturing nickel-based superalloy.

Description

technical field [0001] The invention relates to the technical field of metal materials, in particular to an additively manufactured nickel-based superalloy with low crack susceptibility and high-strength thermal corrosion resistance, which is suitable for preparing hot-end components of aerospace engines, and also relates to the additively manufactured nickel-based superalloy. Preparation method and application of superalloy. Background technique [0002] Metal additive manufacturing technology achieves near-net-shape of three-dimensional complex parts through laser point-by-point scanning, line-by-line overlap, and layer-by-layer melting, solidification, and accumulation, and gets rid of the principle constraints of traditional large-scale ingot casting and forging. The rapid solidification structure with uniform composition and dense structure is known as a "transformative" short-cycle, low-cost, high-performance, green advanced manufacturing technology. [0003] Compared...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C19/05C22C30/00B22F9/08B22F10/28B22F10/64F01D25/00B33Y10/00B33Y40/20B33Y70/00
CPCC22C19/055C22C19/056C22C30/00B22F9/082B22F10/28B22F10/64B33Y10/00B33Y40/20B33Y70/00F01D25/005B22F2009/0848B22F2009/0824F05D2300/175Y02P10/25
Inventor 李相伟温冬辉樊卓志王瑶郭秋娟郑江鹏丁仁根张书彦张鹏
Owner CENT OF EXCELLENCE FOR ADVANCED MATERIALS
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