Check patentability & draft patents in minutes with Patsnap Eureka AI!

Method for regulating phase proportion of TC4 titanium alloy through heat treatment

A titanium alloy and phase ratio technology is applied in the field of regulating the phase ratio of TC4 titanium alloy through heat treatment, which can solve the problems of insufficient coordination and other problems.

Inactive Publication Date: 2020-09-22
SHENYANG POLYTECHNIC UNIV
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, different grain sizes and phase ratios have a great influence on the superplasticity of titanium alloys. However, most of the current research on TC4 titanium alloys focuses on improving the plasticity by means of grain refinement, and has not fully utilized it. The coordination of α and β phases during TC4 superplastic deformation, so for TC4 dual-phase titanium alloys, the role of the ratio of α and β phases in the superplastic deformation process can be fully utilized to make the TC4 titanium alloy grain size and phase ratio A good combination can achieve the effect of improving the superplasticity of the TC4 alloy, so the current technology of controlling the phase ratio in the TC4 titanium alloy has great practical significance

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
  • Method for regulating phase proportion of TC4 titanium alloy through heat treatment
  • Method for regulating phase proportion of TC4 titanium alloy through heat treatment
  • Method for regulating phase proportion of TC4 titanium alloy through heat treatment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A method for regulating the phase ratio of TC4 titanium alloy by heat treatment, according to the following steps:

[0040] Step 1: Sandpaper the TC4 titanium alloy to remove the oxide layer on its surface, so as to prevent the oxide layer on the surface from interfering with the heat treatment effect during the subsequent heat treatment process;

[0041] Step 2: Put the polished TC4 titanium alloy into the box-type resistance furnace after the furnace temperature reaches the set temperature, and adopt the α phase phase transition temperature T α Under normalizing treatment for 4h.

[0042] The surface of the TC4 sample after heat treatment is polished, mechanically polished, and metallographically corroded in sequence, and then the metallographic structure of the corroded surface is observed, and the colored α phase in the metallographic diagram is statistically analyzed by image pro plus software. It was confirmed that the proportion of the α phase in the heat-treate...

Embodiment 2

[0044] The present embodiment operation step is the same as embodiment 1, wherein, adopt (T to TC4 titanium alloy) α The normalizing treatment mode was carried out for 4h at +30)°C to obtain a TC4 titanium alloy with a phase ratio of 77.3% and a phase ratio of β of 22.7%. The metallographic microstructure of the TC4 titanium alloy obtained by heat treatment is as follows image 3 As shown, the α phase (white) of the metallographic microstructure is colored and the proportion of the α phase is counted Figure 4 shown.

Embodiment 3

[0046] The operation steps of this embodiment are the same as those in Embodiment 1, wherein the β phase transition temperature T is adopted for the TC4 titanium alloy β Under the normalizing treatment mode for 2h, the TC4 titanium alloy with α phase ratio of 52.7% and β phase ratio of 47.3% was obtained. The metallographic microstructure of the TC4 titanium alloy obtained by heat treatment is as follows Figure 5As shown, the α phase (white) of the metallographic microstructure is colored and the proportion of the α phase is counted Figure 6 shown.

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 regulating the phase proportion of TC4 titanium alloy through heat treatment. The method is characterized in that the proportion range of an alpha phase and a betaphase can be accurately and effectively controlled, and the method specifically comprises the following steps: 1, carrying out sanding on the TC4 titanium alloy, and removing an oxide layer on the surface of the TC4 titanium alloy so as to prevent the oxide layer on the surface of the subsequent heat treatment process from interfering with the heat treatment effect; 2, performing the heat treatment on the TC4 titanium alloy after sanding, and selecting a corresponding heat treatment mode according to an obtained alpha-phase proportion interval value; and 3, performing grinding, mechanical polishing and metallographic corrosion on the surface of a heat-treated TC4 sample, performing metallographic structure observation on the corrosion surface, and performing statistical analysis on the coloring alpha phase in a metallographic image to obtain an alpha-phase ratio value.

Description

technical field [0001] The invention belongs to the technical field of titanium alloy material processing, and in particular relates to a method for regulating the phase ratio of TC4 titanium alloy through heat treatment. Background technique [0002] TC4 (Ti-6Al-4V) titanium alloy belongs to (α + β) type dual-phase alloy. It also has good high temperature performance, stable structure, good welding performance and good corrosion resistance of α type titanium alloy. The advantage of good thermal stability, in addition, TC4 titanium alloy also has good structural stability, toughness and plasticity, so it can be better for hot working, but due to the complexity of phase transformation of titanium alloy and the diversity of hot working process , with many types of microstructure. However, as far as the most widely used two-phase titanium alloy is concerned, it can generally be classified into four categories: Widmanstatten structure, basket structure, dual state structure 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): C22F1/18C22F1/02
CPCC22F1/02C22F1/183
Inventor 周舸刘超王鑫门月张浩宇陈立佳
Owner SHENYANG POLYTECHNIC UNIV
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com