Unlock instant, AI-driven research and patent intelligence for your innovation.

A processing method for vacuum extrusion of tial alloy plate

A technology of alloy sheet and vacuum extrusion, which is applied in the processing field of TiAl alloy sheet, and can solve the problems such as difficulty in forming TiAl alloy

Active Publication Date: 2017-05-24
HARBIN INST OF TECH
View PDF7 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the technical problem of difficult forming of existing TiAl alloys, and provides a processing method for vacuum extrusion of TiAl alloy plates

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
  • A processing method for vacuum extrusion of tial alloy plate
  • A processing method for vacuum extrusion of tial alloy plate
  • A processing method for vacuum extrusion of tial alloy plate

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0017] Embodiment 1: This embodiment is a processing method for vacuum extrusion of a TiAl alloy plate, which is specifically carried out according to the following steps:

[0018] 1. Preparation of TiAl powder: Put titanium powder and aluminum powder in a ball mill mixer at a molar ratio of 1:1 for powder mixing and ball milling for 6 hours to form a uniform TiAl mixed powder;

[0019] 2. Pre-alloying of TiAl powder: put the uniform TiAl mixed powder obtained in step 1 in a tube furnace, and raise the temperature from room temperature to 550°C to 900°C, and then under the condition of vacuum or argon protection and a temperature of 550°C to 900°C, heat preservation for 1h to 2h to obtain pre-alloyed TiAl powder;

[0020] 3. Vacuum hot pressing sintering: fill the pre-alloyed TiAl powder obtained in step 2 between the upper and lower punches of the graphite mold, compact it and install it in the furnace, and vacuum the furnace until the vacuum degree reaches 10 -2 Pa~10 -3 P...

specific Embodiment approach 2

[0022] Specific embodiment two: the difference between this embodiment and specific embodiment one is: adopt dehydrated alcohol to be the mixing medium during powder mixing and ball milling in step 1, and the quality of dehydrated alcohol is 10%~of the total mass of titanium powder and aluminum powder 30%. Others are the same as the first embodiment.

specific Embodiment approach 3

[0023] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the purity of the titanium powder described in step 1 is 99.5%. Others are the same as those in Embodiment 1 or 2.

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

PropertyMeasurementUnit
compressive strengthaaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a vacuum extrusion processing method for a TiAl alloy plate, and relates to a processing method for the TiAl alloy plate. The vacuum extrusion processing method aims at solving the problem that existing TiAl alloy forming is difficult. The method comprises the steps of 1 TiAl powder preparing; 2 TiAl powder prealloying; 3 vacuum hot-pressing sintering; 4 TiAl alloy plate extruding. According to the vacuum extrusion processing method for the TiAl alloy plate, TiAl alloy block materials are prepared through the methods of prealloying and vacuum hot-pressing sintering, and then the block alloy is placed in an extrusion mould for high-temperature extrusion forming. The vacuum extrusion processing method for the TiAl alloy plate has the advantages that the problem that the TiAl alloy is difficult to form due to the poor room-temperature ductility and the high high-temperature strength is solved, and the TiAl alloy plate is obtained by adopting a high-temperature extrusion method. The vacuum extrusion processing method is also suitable for other titanium alloy materials.

Description

technical field [0001] The invention relates to a processing method of a TiAl alloy plate. Background technique [0002] TiAl alloy has the characteristics of high melting point, low density, high elastic modulus, good flame retardancy, excellent oxidation resistance and good high temperature strength (700 ° C ~ 900 ° C), and has gradually become a promising lightweight high temperature structure. Material. However, due to the low ductility of TiAl alloy at room temperature and high yield stress at high temperature, it is very difficult to process and form, which limits the application of this alloy in engineering. Contents of the invention [0003] The invention aims to solve the technical problem that the existing TiAl alloy is difficult to form, and provides a vacuum extrusion processing method for the TiAl alloy plate. [0004] The processing method of a kind of TiAl alloy plate vacuum extrusion of the present invention is to carry out according to the following step...

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 Patents(China)
IPC IPC(8): C22F1/18C22C1/04
Inventor 王重阳卢振蒋少松
Owner HARBIN INST OF TECH