Nickel-based alloy additive manufacturing method

A technology of additive manufacturing and nickel-based alloys, which is applied in the direction of additive processing, metal material coating technology, coating, etc., can solve the problems of increasing production costs and increasing production processes, so as to reduce the deformation of workpieces and improve performance , The effect of refining the structure and grain

Pending Publication Date: 2021-09-17
JIANGSU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these methods all need to increase additional production processes and increase production costs

Method used

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  • Nickel-based alloy additive manufacturing method
  • Nickel-based alloy additive manufacturing method
  • Nickel-based alloy additive manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Nickel-based alloy selects a commercially available Inconel 718 alloy. Additive manufacturing according to the following steps:

[0019] Step (1): Preparation of the molten powder. The chemical composition of the nickel-based powder is calculated by mass, Ti is 1.7%, CR is 1.5%, Si is 1.0%, and the composite rare earth is 0.6%, C is 0.2%, B is 0.2%, V is 0.08. %, SR is 0.01%, the margin is Ni, and the powder particle size is 100 ~ 240 mesh. Among them, the chemical composition of composite rare earths is 30%, EU is 30%, ND is 5%, PM is 5%, PR is 1%, and Gd is 1%, and the remaining CE. Before the laser cladding process, the powder is required to be ground and mixed in a vacuum ball mill, and the time is 3 to 5 min, ensuring uniform powder mixing and the powder shape is a spherical or near spherical; then a vacuum incubator in a temperature of 50 to 60 ° C. Insulation is 6 to 8 minutes to remove moisture.

[0020] Step (2): Laser cladding process. With fiber lasers, laser mol...

Embodiment 2

[0023] Nickel-based alloy selects a commercially available Inconel 718 alloy. Additive manufacturing according to the following steps:

[0024] Step (1): Preparation of the molten powder. The chemical composition of the nickel-based powder was calculated by mass, Ti was 1.9%, CR was 1.7%, Si was 1.2%, and the composite rare earth was 1.0%, C was 0.4%, B was 0.4%, V is 0.12. %, SR is 0.03%, the margin is Ni, and the powder particle size is 100 ~ 240 mesh. Among them, the chemical composition of composite rare earths is 36%, Eu is 36%, ND of 7%, PM is 7%, PR is 3%, Gd is 3%, and the remaining CE. Before the laser cladding process, the powder is required to be ground and mixed in a vacuum ball mill, and the time is 3 to 5 min, ensuring uniform powder mixing and the powder shape is a spherical or near spherical; then a vacuum incubator in a temperature of 50 to 60 ° C. Insulation is 6 to 8 minutes to remove moisture.

[0025] Step (2): Laser cladding process. With fiber lasers, laser ...

Embodiment 3

[0028] Nickel-based alloy selects a commercially available Inconel 718 alloy. Additive manufacturing according to the following steps:

[0029] Step (1): Preparation of the molten powder. The chemical composition of the nickel-based powder was calculated by mass, and Ti was 40%, CR was 1.6%, and Cu was 1.6%, Si was 1.1%, and the composite rare earth was 0.8%, C was 0.3%, B was 0.3%, V is 0.1. %, SR is 0.02%, the margin is Ni, and the powder particle size is 100 ~ 240 mesh. Among them, the chemical composition of composite rare earths is: La is 33%, Eu is 33%, ND is 6%, PM is 6%, PR is 2%, Gd is 2%, and the remaining CE. Before the laser cladding process, the powder is required to be ground and mixed in a vacuum ball mill, and the time is 3 to 5 min, ensuring uniform powder mixing and the powder shape is a spherical or near spherical; then a vacuum incubator in a temperature of 50 to 60 ° C. Insulation is 6 to 8 minutes to remove moisture.

[0030] Step (2): Laser cladding process....

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Abstract

The invention belongs to the technical field of nickel-based alloy manufacturing, and discloses a nickel-based alloy additive manufacturing method. The method comprises the following steps: firstly, preparing a coating on the surface of a nickel-based alloy by adopting a laser cladding method; then, carrying out laser shock processing on the coating; and repeating the laser cladding and laser shock processing processes until a member is repaired or the manufacturing of the member is completed. On one hand, the cladded coating is nickel-based memory alloy powder, has the stress self-adaptive characteristic, can induce epsilon martensite positive and negative phase transformation through stress to relax residual stress in a cladding layer, reduces the cracking sensitivity of the cladding layer and solves the problem of workpiece deformation; and on the other hand, laser shock can refine structure grains of the cladding coating, prefabricate residual compressive stress and improve the bonding performance between the cladding layer and a matrix, so that the strength and hardness of the coating are effectively improved, and the wear resistance is improved.

Description

Technical field [0001] The present invention relates to a method of producing a nickel-based alloy, referred to as a process for producing a nickel-based alloy member for laser cladding and laser impact composite treatment to improve alloy properties, belonging to the technical field of material preparation. Background technique [0002] The nickel-based alloy has been widely used due to excellent mechanical properties, high temperature performance, in recent years, especially in aerospace, aerospace sectors, mainly used in manufacturing engine, turbine and other high temperature components. The conditions for the applications of these components are extremely complicated, bad, and the comprehensive performance of the components is extremely high. With the advancement of science and technology and the improvement of human life, the production method of traditional casting and machining is unable to meet the growing high quality requirements for components, and the additive manufa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10B33Y10/00B33Y40/20B33Y50/02B33Y70/00C22C1/04C22C19/05C22F3/00
CPCC23C24/106C22C1/0441C22C19/058C22F3/00B33Y10/00B33Y50/02B33Y40/20B33Y70/00
Inventor 刘光磊肖定强黄伟杰李光磊汪新鹏郭顺吕鹏刘海霞程晓农
Owner JIANGSU UNIV
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