Nickel-based casting alloy and preparation method thereof

A casting alloy and nickel-based technology, which is applied in the fields of nickel-based casting alloy and its preparation, nickel-based casting high-temperature alloy, air intake structural parts, and high-temperature load-bearing structural parts, and can solve the problem of not fully meeting the requirements of high-temperature structural parts of ramjet engines and other problems, to achieve high-temperature oxidation resistance and room temperature tensile properties, improve work reliability and performance levels, and improve high-temperature mechanical properties

Active Publication Date: 2020-06-09
BEIJING CISRI GAONA TECH
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the difference between the working conditions and structure and the aircraft engine, the existing Mar-M002 alloy composition, casting process, and heat treatment process do not fully meet the requirements for the use of high-temperature structural parts of ramjet engines. More than 1200℃, service time more than 2000s"

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
  • Nickel-based casting alloy and preparation method thereof
  • Nickel-based casting alloy and preparation method thereof
  • Nickel-based casting alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0027] The method for preparing the above-mentioned nickel-based casting alloy provided by the present invention includes: mixing, melting, refining and casting the alloy raw materials under vacuum conditions in sequence.

[0028] In the method of the present invention, the vacuum condition may be a condition with a vacuum degree below 10 Pa (eg, 5-10 Pa).

[0029] In the method of the present invention, the mixing melting and refining can be carried out in a conventional manner, but preferably, the mixing melting and refining method is as follows: when the vacuum degree is lower than 10Pa, power transmission is started, the power transmission power is 25-35KW, and the alloy raw materials are After full melting, reduce the power to 15-25KW for refining until the molten steel surface is clean and without film. Mixed melting and refining can be carried out in a vacuum induction furnace crucible.

[0030] In the method of the present invention, conventional methods can be used for...

Embodiment 1-3

[0036] (1) prepare alloy raw material according to the composition shown in Table 1;

[0037] (2) Put the alloy raw material prepared above into the crucible of the vacuum induction furnace, and start to transmit electricity after the vacuum is below 10Pa. The power transmission power is 30KW. After the alloy raw material is fully melted, the power is reduced to 20KW and refined until the molten steel surface is clean and free of film. , when the molten steel temperature is about 25°C higher than the alloy pouring temperature, the power is cut off and the temperature is measured. The power transmission power is 10KW for casting and molding. Base cast alloy ingots. figure 1 Typical low magnification (×200 magnification) microstructure of the alloy obtained in Example 1, figure 2 The typical structure of the dendritic stem γ' strengthened phase of the alloy obtained in Example 1 was obtained by observation with a field emission scanning electron microscope.

[0038] Mar-M002 ...

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 belongs to the technical field of new materials, and provides a nickel-based casting alloy and a preparation method thereof, which are mainly applied to a high-temperature bearing structural member, such as an air inlet channel structural member, of a ramjet engine with the wall surface temperature reaching 1200 DEG C. The alloy comprises the following components of, by mass, 0.1%-0.25% of C, 7.5%-10.7% of Cr, 8%-12% of Co, 8%-12% of W, larger than 6.25% of Al, 0.75%-2% of Ti, 2%-3% of Ta, 0.8%-2.5% of Hf, 0.01%-0.15% of Zr and 0%-0.2% of B, and the balance a matrix element Ni and impurity elements. The nickel-based casting alloy is produced through adopting an investment casting method, and has higher temperature bearing capacity and durability than similar casting high-temperature alloys after being subjected to 870 DEG C/16 h of standard heat treatment.

Description

technical field [0001] The invention belongs to the technical field of new materials, and relates to a nickel-based casting alloy and a preparation method thereof, in particular to a nickel-based casting superalloy with excellent ultra-high temperature mechanical properties, which is mainly applied to the high-temperature bearing structure of a ramjet with a wall surface temperature of 1200° C. parts, such as intake duct structural parts. Background technique [0002] Since the concept of hypersonic flight was proposed in the 1960s, countries all over the world have been competing to develop hypersonic technology, and the focus has always been on high-temperature components with complex structures such as hypersonic ramjets. In order to meet the needs of continuous upgrading of engine thrust-to-weight ratio, the structure and material of key superalloy components have undergone tremendous changes, and the structure has developed in a holistic and hollow direction, requiring ...

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): C22C19/05C22C1/02C22F1/10
CPCC22C1/023C22C19/056C22F1/10
Inventor 袁晓飞尹三强吴剑涛陈兴福李维
Owner BEIJING CISRI GAONA TECH
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