Selective laser forming method for GH170 nickel-based superalloy

A nickel-based superalloy, laser selection technology, applied in the direction of improving energy efficiency, process efficiency, additive manufacturing, etc. Serious effect of element segregation

Pending Publication Date: 2021-10-29
飞而康快速制造科技有限责任公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] At present, additive manufacturing technology has been applied to a large extent in the fields of titanium alloys, stainless steel, superalloys and other materials. However, compared with traditional processes, the current forming process has fewer types of alloys, which is still the key to industrial application of additive manufacturing technology. Restrictions

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  • Selective laser forming method for GH170 nickel-based superalloy

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Embodiment Construction

[0024] Embodiments of the present invention will be described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0025] In the description of the present invention, unless otherwise clearly stipulated and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or a mechanical connection. A connection can also be an electrical connection, a direct connection, or an indirect connection through an intermediary, or an internal connection between two elements or an interaction relationship between two elements. Those of o...

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Abstract

The invention discloses a selective laser forming method for GH170 nickel-based superalloy. The selective laser forming method comprises the following steps: 1) material selection: GH170 superalloy powder is taken; 2) drying treatment: the powder is fully dried; (3) equipment preparation: selective laser melting forming equipment is vacuumized and filled with inert gas for atmosphere protection, and a platform substrate in the selective laser melting forming equipment is preheated; and (4) laser material adding: the powder is laid on the platform substrate, the solidified powder is melted through laser scanning, laying and melting of the solidified powder are repeated, and finally a target part is formed layer by layer. Compared with a forging mode, the selective laser forming method of the GH170 nickel-based superalloy can solve the problems of serious element segregation, coarse grains, shrinkage cavity looseness and the like, overcomes the defects of black spots, white spots and the like, and particularly has a remarkable forming effect on parts with complex structures, the quality of finished products is high, the production time is shortened, and the production cost is reduced.

Description

technical field [0001] The invention relates to the technical field of superalloy preparation, in particular to a GH170 nickel-based superalloy laser selective area forming method. Background technique [0002] GH170 is a Ni-Cr-Co-based solid-solution-strengthened deformed superalloy. Its composition is characterized by high content of W, Co, and Cr elements, and a small amount of La element is added to strengthen the grain boundary. The alloy has high strength and creep resistance at 1000°C, and still has high strength and ductility at 1100°C-1200°C, and the μ phase precipitates after long-term aging at 900°C and 1000°C, making the alloy room temperature plasticity decline, but still meet the requirements of use. At the same time, the alloy has excellent oxidation resistance and good cold forming and welding process performance. It is used in the production of aero-engine afterburner regulator parts, and its performance level is close to that of American HA188 and MAR-M918...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F10/28B33Y10/00B33Y70/00C22C1/04
CPCB22F10/28C22C1/0433B33Y10/00B33Y70/00Y02P10/25
Inventor 殷军伟计霞刘慧渊肖静宇汪承杰陈志茹高桦沈于蓝郭广浩
Owner 飞而康快速制造科技有限责任公司
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