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A gh3230 nickel-based superalloy material and its method and application for eliminating microcracks formed by laser selective melting

A technology of GH3230 and nickel-based superalloy, which is applied in the direction of additive processing and additive manufacturing, etc., to achieve the effect of strong practicability, simple doping method, and improved bearing capacity

Active Publication Date: 2021-11-30
中航迈特增材科技(北京)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the problem of a large number of microcracks in GH3230 alloy, this disclosure proposes a method for eliminating microcracks in GH3230 nickel-based superalloy formed by laser selective melting

Method used

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  • A gh3230 nickel-based superalloy material and its method and application for eliminating microcracks formed by laser selective melting
  • A gh3230 nickel-based superalloy material and its method and application for eliminating microcracks formed by laser selective melting
  • A gh3230 nickel-based superalloy material and its method and application for eliminating microcracks formed by laser selective melting

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Embodiment 1

[0045] In this embodiment, a method for eliminating microcracks in laser selective melting forming GH3230 nickel-based superalloy is provided, including the following steps:

[0046] The specific preparation method is as follows:

[0047] (1) Select GH3230 powder with an average particle size of 28.2μm and TiB with an average particle size of 500nm 2 Powder, according to the mass ratio of 99:1, prepared to contain 1.0wt.%TiB 2 composite powder.

[0048] (2) Then carry out double-centrifugal high-speed mixing and stirring for the composite powder, the mixing speed is 1500rpm, each time is 1 minute, after each mixing, cool for 20 minutes before the next mixing, until the powder is evenly mixed and there is no obvious agglomeration.

[0049] (3) Use the ConceptLaserMlab 200R metal additive manufacturing equipment to perform SLM forming on the composite powder obtained in the previous step. The detailed process parameters are as follows: laser power 190W, scanning speed 800mm / s,...

Embodiment 2

[0051] In this embodiment, a method for eliminating microcracks in laser selective melting forming GH3230 nickel-based superalloy is provided, including the following steps:

[0052] The specific preparation method is as follows:

[0053] (1) Select GH3230 powder with an average particle size of 35 μm and TiB with an average particle size of 800 nm 2 powder, respectively according to the mass ratio of 98.5:1.5, prepared to contain 1.5wt% TiB 2 composite powder.

[0054] (2) Then carry out double-centrifugal high-speed mixing and stirring for the composite powder, the mixing speed is 1500rpm, each time is 1 minute, after each mixing, cool for 20 minutes before the next mixing, until the powder is evenly mixed and there is no obvious agglomeration.

[0055] (3) Use the ConceptLaserMlab 200R metal additive manufacturing equipment to perform SLM forming on the composite powder obtained in the previous step. The detailed process parameters are as follows: laser power 200W, scanni...

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Abstract

The present disclosure relates to the technical field of alloy preparation, and specifically provides a GH3230 nickel-based superalloy material and a method and application for eliminating microcracks in laser selective melting and forming. The composition of the GH3230 powder elements by mass fraction is as follows: C 0.05-0.15%, Cr 20-24%, Co<5%, W 13-15%, Mo 1-3%, Al0.2-0.5%, Ti<0.1 %, Fe<3%, La 0.005‑0.05%, B<0.015%, Si 0.25‑0.75%, Mn0.3‑1%, S<0.015%, P<0.03%, Cu<0.5, the balance is Ni and inevitable impurities; also includes TiB 2 powder, the TiB 2 The mass of the powder is 0.5-1.5% of the mass of the above-mentioned GH3230 alloy powder. The method in the present disclosure enables the elimination of microcracks in the SLM process to manufacture the GH3230 alloy, thereby significantly improving the mechanical properties of the GH3230 formed components.

Description

technical field [0001] The disclosure relates to the technical field of alloy preparation, and specifically provides a GH3230 nickel-based superalloy material and its method and application for eliminating microcracks formed by laser selective melting. Background technique [0002] The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art. [0003] GH3230 alloy is a solid-solution-strengthened superalloy with Cr, W, and Mo as the main strengthening elements. It has a service temperature range of 700°C to 1050°C and has good strength, thermal stability and oxidation resistance. The performance of GH3230 alloy is greatly improved than that of GH3536, and is comparable to the oxidation resistance and creep performance of GH5188 alloy, while the structure stability, oxidation resistance and material cost of GH3230 alloy are significantly better than GH5188 alloy. Therefore, this alloy is mainly use...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C19/05C22C32/00C22C30/00C22C30/02B22F1/00B22F10/28B33Y70/10B33Y10/00
CPCB22F1/0003B33Y10/00B33Y70/10C22C19/055C22C30/00C22C30/02C22C32/0073
Inventor 韩泉泉张振华高建杨圣钊
Owner 中航迈特增材科技(北京)有限公司
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