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Nickel-based superalloy/stainless steel gradient composite material based on laser near-net forming technology and preparation method of nickel-based superalloy/stainless steel gradient composite material

A nickel-based superalloy, laser near-net forming technology, applied in the direction of process efficiency improvement, additive manufacturing, additive processing, etc., to achieve the effect of rich raw material sources, simple preparation methods, and guaranteed overall performance

Pending Publication Date: 2022-05-27
WUHAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The main purpose of the present invention is to provide a nickel-based superalloy / stainless steel gradient composite material and its preparation method based on laser near-net forming technology to solve the current traditional homogeneous material application. The limitations of the two materials can be effectively combined to ensure the overall performance of the resulting composite material, showing excellent tensile strength and corrosion resistance, and meeting the application needs of aerospace, oil, gas and chemical industries.

Method used

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  • Nickel-based superalloy/stainless steel gradient composite material based on laser near-net forming technology and preparation method of nickel-based superalloy/stainless steel gradient composite material
  • Nickel-based superalloy/stainless steel gradient composite material based on laser near-net forming technology and preparation method of nickel-based superalloy/stainless steel gradient composite material
  • Nickel-based superalloy/stainless steel gradient composite material based on laser near-net forming technology and preparation method of nickel-based superalloy/stainless steel gradient composite material

Examples

Experimental program
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Effect test

Embodiment 1

[0042] A nickel-based superalloy / stainless steel gradient composite material, the schematic diagram of which is shown in figure 1 , the specific preparation method comprises the following steps:

[0043] 1) The selected size is 150×150×10cm 3 The rolled 316L stainless steel alloy plate is used as the substrate, the surface of the substrate is first polished with sandpaper, and then the surface oil stains are cleaned with anhydrous ethanol;

[0044] 2) First fill the building cabin with high-purity argon gas (<1000ppm) to prevent oxidation of the sample during the printing process; then, weigh an appropriate amount of Inconel625 nickel-based superalloy powder and 316L stainless steel powder, of which Inconel625 nickel-based superalloy powder The average particle size of the 316L stainless steel powder is 93 μm, and the average particle size of the 316L stainless steel powder is 90 μm. The weighed Inconel625 nickel-based superalloy powder and 316L stainless steel powder are res...

Embodiment 2

[0054] A nickel-based superalloy / stainless steel gradient composite material, a specific preparation method comprising the following steps:

[0055] 1) The selected size is 150×150×10cm 3 The rolled 316L stainless steel alloy plate is used as the substrate to first polish the surface of the substrate with sandpaper, and then use anhydrous ethanol to clean the surface oil stains;

[0056] 2) First fill the building cabin with high-purity argon gas (<1000ppm) to prevent oxidation of the sample during the printing process; then, weigh an appropriate amount of Inconel718 nickel-based superalloy powder and 316L stainless steel powder, of which Inconel718 nickel-based superalloy powder The average particle size of the 316L stainless steel powder is 91 μm, and the average particle size of the 316L stainless steel powder is 90 μm. Put the weighed Inconel718 nickel-based superalloy powder and 316L stainless steel powder into the corresponding powder feeding barrels; adjust the laser po...

Embodiment 3

[0065] A nickel-based superalloy / stainless steel gradient composite material, a specific preparation method comprising the following steps:

[0066] 1) The selected size is 150×150×10cm 3 The rolled 304L stainless steel alloy plate is used as the substrate, the surface of the substrate is first polished with sandpaper, and then the surface oil stains are cleaned with anhydrous ethanol;

[0067] 2) First fill the building cabin with high-purity argon gas (<1000ppm) to prevent oxidation of the sample during the printing process; then, weigh an appropriate amount of Inconel625 nickel-based superalloy powder and 304L stainless steel powder, among which Inconel625 nickel-based superalloy powder The average particle size of the 304L stainless steel powder was 93 μm, and the average particle size of the 304L stainless steel powder was 88 μm. The weighed Inconel625 nickel-based superalloy powder and 304L stainless steel powder were respectively put into the corresponding powder feedin...

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Abstract

The invention discloses a nickel-based high-temperature alloy / stainless steel gradient composite material which comprises a stainless steel layer, a nickel-based high-temperature alloy / stainless steel gradient composite layer and a nickel-based high-temperature alloy layer which are sequentially arranged, and the nickel-based high-temperature alloy / stainless steel gradient composite layer comprises a plurality of composite layers with the nickel-based high-temperature alloy content changing in a gradient mode. And the composite layer is obtained by performing laser near-net forming on stainless steel powder and nickel-based high-temperature alloy powder serving as raw materials. The nickel-based superalloy / stainless steel gradient composite material is prepared by taking nickel-based superalloy powder and stainless steel powder as raw materials through a laser near-net forming technology; accurate regulation and control of components and structures can be realized aiming at forming of interface joints of gradient materials, remarkable characteristics of the two materials can be effectively combined, and the overall performance of the obtained composite material is effectively guaranteed; the related preparation process is simple, easy to control, short in production period, high in raw material utilization rate and suitable for popularization and application.

Description

technical field [0001] The invention belongs to the technical field of functional materials and their manufacture, and in particular relates to a nickel-based superalloy / stainless steel gradient composite material based on laser near-net-shape technology and a preparation method thereof. Background technique [0002] Gradient material is a new type of composite material whose composition and microstructure gradually change in a predetermined manner along a single or multiple directions, resulting in a gradient change in the corresponding properties. Gradient materials have unique properties and wide applicability, which can meet extremely demanding performance requirements, and have been widely used in extreme environments such as aerospace, nuclear power, and ocean. The preparation of nickel-based superalloy / stainless steel gradient composites is of great significance for application industries such as oil, gas and chemical industries that need to meet both high strength an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F10/28B22F10/32B22F10/366B22F7/08B33Y10/00B33Y80/00
CPCB22F10/28B22F10/32B22F10/366B22F7/08B33Y10/00B33Y80/00B22F2999/00B22F2207/01Y02P10/25
Inventor 陈斐佟雪瑶张驰王梫沈强
Owner WUHAN UNIV OF TECH
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