Titanium-aluminum-based high temperature alloy block preparing method based on thermal explosion reaction

A technology of superalloy and thermal explosion reaction, which is applied in the field of hot processing to achieve the effect of reducing room temperature brittleness

Active Publication Date: 2020-10-09
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
View PDF5 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] It should be said that at present, there is a lack of a titanium-based superalloy in the field of aviation and aerospace

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
  • Titanium-aluminum-based high temperature alloy block preparing method based on thermal explosion reaction
  • Titanium-aluminum-based high temperature alloy block preparing method based on thermal explosion reaction
  • Titanium-aluminum-based high temperature alloy block preparing method based on thermal explosion reaction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] The technical solution of the present invention will be further described in detail below with reference to the embodiments:

[0035] See attached Figure 1~3 As shown, the steps of the method for preparing the titanium-aluminum-based superalloy block based on the thermal explosion reaction described in this embodiment are as follows:

[0036] Step one, powder preparation

[0037] According to the weight of the titanium-aluminum-based superalloy block, weigh pure Ti powder, pure Al powder and titanium alloy powder with the same powder particle size. The mass ratio of the Ti powder and Al powder is consistent with the atomic ratio of the two, and the titanium alloy powder accounts for 5%-30% of the bulk volume of the titanium-aluminum-based superalloy;

[0038] The material of the titanium alloy powder is Ti2AlNb or Ti-Al-Fe;

[0039] Step two, heat explosion mold preparation

[0040] The thermal explosion mold used for the thermal explosion reaction is composed of two parts: the...

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 provides a titanium-aluminum-based high temperature alloy block preparing method based on a thermal explosion reaction. According to the titanium-aluminum-based high temperature alloy block preparing method based on the thermal explosion reaction, Ti/Al mixed powder is used as a raw material, an appropriate amount of titanium alloy powder is added to conduct alloying, a novel titanium-aluminum alloy material is prepared through the thermal explosion reaction and hot pressing sintering; compared with conventional gamma-TiAl, the novel titanium-aluminum alloy material remarkably improves indoor temperature ductility and has stable high temperature breaking strength and oxidation resistance at the temperature of 750 DEG C. Chinese weaponry urgently needs the high temperature titanium alloy material with the long-term working temperature capable of stably reaching 750 DEG C, such as high-pressure compressor blades, high-pressure compressor disks and high-pressure compressor casings, but the indoor temperature fragility of the existing gamma-TiAl material is too large. The novel titanium-aluminum alloy researched in the project basically keeps the heat resistance of the gamma-TiAl, but the novel titanium-aluminum alloy significantly lowers the indoor temperature fragility, greatly improves engineering practicability and embodies remarkable technology development, and then important technical support is provided for researching and manufacturing of heat-resistant components on aviation engines with thrust-weight ratio being 12-15 and high-performance aerospace thrusters.

Description

Technical field [0001] The invention is a method for preparing a titanium-aluminum-based high-temperature alloy block based on a thermal explosion reaction, and belongs to the technical field of thermal processing. Background technique [0002] γ-TiAl intermetallic compound has a series of advantages such as low density, high specific strength, high specific rigidity and good high temperature performance. It is generally considered that its long-term use temperature can even reach 750℃~800℃ (typical high temperature performance data: 800℃, tensile The tensile strength is about 500MPa). On the one hand, γ-TiAl intermetallic compounds can replace conventional Ti-based alloys, thereby increasing the use temperature of materials; on the other hand, it can replace Ni-based superalloys to achieve weight reduction, and the weight reduction effect is more obvious than that of Ti2AlNb alloys. This is very attractive for meeting the high-temperature service requirements and weight reducti...

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
IPC IPC(8): B22F3/08B22F3/03B22F3/14B22F1/00
CPCB22F1/0003B22F3/08B22F3/03B22F3/14B22F3/1208B22F2998/10
Inventor 方爽熊华平于秋颖张敏聪
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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