Method for forming Ti/Al dissimilar alloy based on laser selective melting technology

A laser selective melting and selective melting technology, which is applied in the improvement of process efficiency, additive manufacturing, additive processing, etc., can solve the problems of difficult connection of two alloys, low solubility, differences in thermal expansion coefficient and thermal conductivity, etc., to improve the solubility. , The effect of overcoming component segregation and improving forming efficiency

Active Publication Date: 2020-02-07
BEIJING UNIV OF TECH
View PDF6 Cites 17 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 forming method of Ti/Al dissimilar alloys based on laser selective melting technology, which solves the problem that the existing titanium/aluminum alloy dissim

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] The present invention will be described in detail below through specific embodiments.

[0031] A method for forming a Ti / Al dissimilar alloy based on laser selective melting technology of the present invention is specifically implemented according to the following steps:

[0032] Step 1, drying and pre-screening the titanium alloy and aluminum alloy powder;

[0033] Dry the TC4 titanium alloy and Al-Mg-Sc-Zr alloy powder in a vacuum environment oven with a temperature of 80-180°C and an air pressure not greater than -0.05MPa for 2-5h, then take it out after vacuum cooling for 2h, and then use it for 200- Sieve the powder with a 240-mesh sieve.

[0034] Step 2, before forming, preparation of program files and SLM equipment;

[0035] Step 2.1, preparation of program files;

[0036] First, use the 3D modeling software on the computer to design the overall 3D solid model of the required parts. According to the design requirements, the overall solid model is divided into ...

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 method for forming a Ti/Al dissimilar alloy based on a laser selective melting technology. Drying and pre-screening treatment are carried out on aluminum alloy and titanium alloy powder; then program files and SLM equipment are prepared; the laser selective melting technology is used for forming a bottom titanium alloy part, after forming is completed, the titanium alloypowder in a powder supply chamber of the SLM equipment is replaced with the aluminum alloy powder, and the laser selective melting technology is continuously used for forming an upper aluminum alloy part on the titanium alloy substrate; and finally, wire cutting equipment is used for cutting parts from the substrate. The laser selective melting technology can directly form the complex parts, shortens the production cycle, improves the forming efficiency and has great production and application value in the aerospace field; and in addition, the laser selective melting technology is adopted, thecooling rate can reach 106 orders of magnitude, a molten pool rapidly solidifies, the solid solubility of aluminum in the titanium alloy is greatly improved, the phenomenon of component segregation is overcome, and the effect of refined crystalline strengthening is achieved.

Description

technical field [0001] The invention belongs to the technical field of laser selective melting technology rapid prototyping method, and in particular relates to a forming method of Ti / Al dissimilar alloy based on laser selective melting technology. Background technique [0002] Both aluminum alloy and titanium alloy have the advantages of light density, high specific strength (the strength of titanium alloy is close to that of medium-strength steel), good corrosion resistance and high temperature performance, etc. In aerospace applications, titanium-aluminum dissimilar alloy components can greatly reduce the overall weight , can significantly improve the economic efficiency. However, aluminum and titanium are very active metals, which are easily oxidized to form TiO in the air. 2 and Al 2 o 3 and other oxides. Moreover, there are large differences in physical and mechanical properties between aluminum and titanium, and there are large differences in the lattice type and ...

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): B22F3/105B22F7/06B33Y10/00
CPCB22F7/06B33Y10/00B22F10/00B22F10/34B22F10/28B22F10/36B22F10/366B22F10/32B22F10/80B22F10/73Y02P10/25
Inventor 曾勇黄昊
Owner BEIJING UNIV OF 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