Hot isostatic pressing forming method of nickel-based high-temperature alloy powder disc

A nickel-based superalloy, hot isostatic pressing technology, applied in other manufacturing equipment/tools, engine components, turbines, etc., can solve problems such as original grain boundary defects, avoid abnormal grain growth, and improve alloy density , the effect of suppressing the formation of boundaries

Active Publication Date: 2020-01-10
SINO EURO MATERIALS TECH OF XIAN CO LTD
View PDF7 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a hot isostatic pressing forming method of nickel-based superalloy powder, which solves the problem of primary particle boundary defects in the manufacturing process of nickel-based superalloy discs in the prior art

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Hot isostatic pressing forming method of nickel-based high-temperature alloy powder disc
  • Hot isostatic pressing forming method of nickel-based high-temperature alloy powder disc
  • Hot isostatic pressing forming method of nickel-based high-temperature alloy powder disc

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A hot isostatic pressing method for FGH4097 alloy powder, comprising the following steps:

[0040] (1) Use the plasma rotating electrode method to prepare superalloy powder, sieve to 50-150 μm under the protection of argon, and electrostatically separate to remove non-metallic inclusions, then put the powder into a sheath and seal welding under vacuum. Abstract The attached picture shows the morphology of superalloy powder prepared by plasma rotating electrode.

[0041] (2) The package after sealing and welding is placed in the hot isostatic pressing equipment, and the hot isostatic pressing is carried out by simultaneously raising the temperature and increasing the pressure. The hot isostatic pressing temperature of the first step is 1200 ° C, the pressure is 100 MPa, and the heat preservation is 1 hour;

[0042] (3) After the first step is completed, the temperature is raised to 1300°C, and the pressure is 100MPa and kept for 30min;

[0043] (4) After the second step...

Embodiment 2

[0048] A hot isostatic pressing method for FGH4097 alloy powder, comprising the following steps:

[0049] (1) Use the plasma rotating electrode method to prepare superalloy powder, sieve to 50-150 μm under the protection of argon, and electrostatically separate to remove non-metallic inclusions, then put the powder into a sheath and seal welding under vacuum. Abstract The attached picture shows the morphology of superalloy powder prepared by plasma rotating electrode.

[0050] (2) The package after sealing and welding is placed in the hot isostatic pressing equipment, and the hot isostatic pressing is carried out by simultaneously raising the temperature and increasing the pressure. The hot isostatic pressing temperature of the first step is 1210 ° C, the pressure is 100 MPa, and the heat preservation is 1 hour;

[0051] (3) After the first step is completed, the temperature is raised to 1270°C, and the pressure is 100MPa and kept for 30min;

[0052] (4) After the second step i...

Embodiment 3

[0055] A hot isostatic pressing method for FGH4097 alloy powder, comprising the following steps:

[0056] (1) Use the plasma rotating electrode method to prepare superalloy powder, sieve to 50-150 μm under the protection of argon, and electrostatically separate to remove non-metallic inclusions, then put the powder into a sheath and seal welding under vacuum. Abstract The attached picture shows the morphology of superalloy powder prepared by plasma rotating electrode.

[0057] (2) The package after sealing and welding is placed in the hot isostatic pressing equipment, and the hot isostatic pressing is carried out by simultaneously raising the temperature and increasing the pressure. The hot isostatic pressing temperature of the first step is 1220 ° C, the pressure is 100 MPa, and the heat preservation is 1 hour;

[0058] (3) After the first step is completed, the temperature is raised to 1250 ° C, and the pressure is 100 MPa for 30 minutes;

[0059] (5) After the second step ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a hot isostatic pressing forming method of a nickel-based high-temperature alloy powder disc, and specifically discloses a hot isostatic pressing forming method of nickel-basedhigh-temperature alloy powder. The method is suitable for preparing a powder high-temperature alloy disc piece subjected to direct hot isostatic pressing forming. The hot isostatic pressing forming method is characterized in that high-temperature alloy powder prepared by a plasma rotating electrode method is used as a raw material, wherein the powder is packaged and sealed and welded under a vacuum condition and then subjected to hot isostatic pressing; the temperature of the first hot isostatic pressing is 10-30 DEG C greater than the gamma' melting temperature, the pressure is not less than100MPa, and the time is not greater than 1h; after the first step is finished, the material is heated to reach 50-100 DEG C below the liquidus temperature, wherein the pressure is more than or equalto 100MPa, and the time is less than or equal to 30min; and after the second step is finished, the temperature is reduced to 10-20 DEG C below the melting temperature of the low-melting-point phase, the pressure is more than or equal to 100MPa, the temperature is kept for 30min, and the furnace is cooled. The method can effectively inhibit the generation of PPB defects in the hot isostatic pressing process and improve the density of the alloy, thereby preparing the high-temperature alloy powder disc with uniform and compact tissues.

Description

technical field [0001] The invention belongs to the technical field of superalloy powder metallurgy, and relates to a hot isostatic pressing forming method of nickel-based superalloy powder. Background technique [0002] The development level of the aero-engine industry is a concentrated expression of a country's industrial foundation, scientific and technological level and comprehensive national strength, and it is also an important strategic guarantee for national security and great power status. The technological progress of aero-engines is closely related to the development of superalloys, which are the most critical structural materials to promote the development of aero-engines. Military aeroengines can usually be evaluated comprehensively by their thrust-to-weight ratio. The most direct and effective technical measure to increase the thrust-to-weight ratio is to increase the gas temperature in front of the turbine, so the performance and selection of superalloy mater...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/15B22F9/14C22C1/04C22C19/03B22F5/00
CPCB22F3/15B22F9/14C22C1/0433C22C19/03B22F5/00
Inventor 宋嘉明徐伟罗成瞿宗宏何山陈富路王庆相赖运金梁书锦
Owner SINO EURO MATERIALS TECH OF XIAN CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap