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

Preparation method of gradient hardening titanium alloy

A technology of titanium alloy and titanium alloy plate, which is applied in the field of preparation of gradient hardened titanium alloy, can solve the problems of limiting the development of gradient hardened titanium alloy, high equipment cost, unstable process, etc., and achieve good sample integrity and hardening uniformity, High preparation efficiency and good process stability

Active Publication Date: 2021-11-12
BEIJING INSTITUTE OF TECHNOLOGYGY
View PDF9 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the method of preparing gradient hardened titanium alloy is usually to prepare a composite film structure with gradient hardness on the surface of titanium alloy. The above method is cumbersome, high equipment cost, unstable process, low utilization rate, high scrap rate, etc. Development of Hardened Titanium Alloys

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
  • Preparation method of gradient hardening titanium alloy
  • Preparation method of gradient hardening titanium alloy
  • Preparation method of gradient hardening titanium alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A method for preparing a gradient hardened titanium alloy, the steps of the method are as follows:

[0035] Step 1. Grinding the surface of the titanium alloy with a hand-held electric grinding wheel to remove the oxide layer, and cleaning the surface with absolute ethanol to remove grease to obtain a cleaned titanium alloy;

[0036] Step 2. Place the steel base on the pre-paved sand pile, put the steel momentum block and titanium alloy into the through hole of the steel base in sequence from bottom to top, and ensure that the bottom surface of the steel base is flush with the bottom surface of the momentum block , apply butter on the contact surface of the two, with a thickness of 0.5mm;

[0037] Step 3. Spread a layer of butter evenly on the surface of the titanium alloy pre-explosion, with a thickness of 0.5mm, and then fix the explosive frame on the edge of the upper surface of the steel base.

[0038] Step 4, put the C4 explosive pressed into a plate shape into th...

Embodiment 2

[0044] In this embodiment, the impact treatment is performed twice, and the rest are the same as in Embodiment 1.

[0045] The Vickers hardness distribution of the gradient hardened titanium alloy is as follows image 3 As shown, the maximum hardness increased to 300Hv after secondary hardening. In the depth range of 0-1mm, the maximum hardness of titanium alloy after secondary hardening increased by 71% compared with the initial hardness of titanium alloy, and the secondary hardening depth was about 3.5mm. .

[0046] The XRD test of the gradient hardened titanium alloy is as Figure 4 As shown, the results show that the phase transformation from α to ω occurs during the hardening process of the titanium alloy, and the phase transformation content of ω is higher after secondary hardening, which leads to a further increase in the hardness of the titanium alloy.

Embodiment 3

[0048] A method for preparing a gradient hardened titanium alloy, the steps of the method are as follows:

[0049] Step 1. Grinding the surface of the titanium alloy with a hand-held electric grinding wheel to remove the oxide layer, and cleaning the surface with absolute ethanol to remove grease to obtain a cleaned titanium alloy;

[0050] Step 2. Place the steel base on the pre-paved sand pile, put the steel momentum block and titanium alloy into the through hole of the steel base in sequence from bottom to top, and ensure that the bottom surface of the steel base is flush with the bottom surface of the momentum block , apply butter on the contact surface of the two, with a thickness of 0.5mm;

[0051] Step 3. Spread a layer of butter evenly on the surface of the titanium alloy pre-explosion, with a thickness of 0.5mm, and then fix the explosive frame on the edge of the upper surface of the steel base.

[0052] Step 4, put the pressed C4 explosive into the explosive frame, ...

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
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relates to a preparation method of a gradient hardening titanium alloy, and belongs to the technical field of gradient hardening materials. A steel momentum block and a cleaned titanium alloy plate are sequentially placed into a steel base with a through hole from bottom to top, the cross section size of the through hole is matched with the cross section sizes of the steel momentum block and the titanium alloy, and the height of the through hole is matched with the total thickness of the steel momentum block and the titanium alloy; and an explosive frame is fixed to the edge of the upper surface of the steel base, a high-detonation-velocity explosive which is pressed into a plate-shaped structure and has the detonation velocity of 7000 m / s or above is placed in the explosive frame, detonation is conducted at one end of the upper surface of the explosive, impact treatment is conducted on the titanium alloy, and thus the gradient hardening titanium alloy is obtained. According to the method, material damage caused by the boundary effect in the impact treatment process of the high-detonation-velocity explosive can be effectively avoided, and then gradient hardening of the upper surface of the titanium alloy is achieved through impact treatment.

Description

technical field [0001] The invention relates to a preparation method of a gradient hardening titanium alloy, which belongs to the technical field of gradient hardening materials. Background technique [0002] Gradient materials refer to heterogeneous composite materials whose structure and properties change continuously or quasi-continuously in the direction of material thickness or length. Gradient materials are widely used in aerospace, mechanical, electromagnetic, biological, nuclear energy and electrical engineering fields, such as aerospace engines, bearings in mechanical engineering, magnetic disks and oscillators in electromagnetic engineering, teeth, bones, Joints, thermoelectric converters and other equipment in nuclear energy and electrical engineering. Titanium alloy is one of the materials with the highest specific strength among the currently used materials. Titanium alloy has the characteristics of high specific strength, good corrosion resistance and heat res...

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): C22F1/18
CPCC22F1/183C22F1/008C22F3/00C22C14/00
Inventor 陈鹏万郭岩松周强刘睿
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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