Low cost high strength titanium alloy

A high-strength, titanium alloy technology, applied in the field of titanium alloys, can solve problems such as brittleness, and achieve the effects of good hot workability, high plasticity, and easy production

Active Publication Date: 2009-01-21
WESTERN METAL MATERIAL
View PDF0 Cites 40 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Considering the cost factor, the eutectoid β-stable elements Cr and Fe have more advantages than the isomorphic β-stable elements Mo, V, and Nb, and their β-stabilizing effect is also stronger, but these elements a

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 1

[0012] The composition of the alloy is Ti-5.8Al-2.5V-2.2Cr-1.5Fe, that is, Al: 5.8%, V: 2.5%, Cr: 2.2%, Fe: 1.5%, and the balance is Ti and not Avoid impurities.

[0013] The ratio of raw materials is calculated by weight percentage: 20% of pure titanium turnings, 2.9% of Al-85V master alloy, 2.2% of electrolytic chromium, 1.5% of industrial iron, 5.4% of aluminum beans, and 68% of first-grade sponge titanium.

[0014] (1) The alloy ingot is forged at a temperature of 1150°C, the rolling temperature of the finished product is controlled at 900°C, and the alloy plate is treated at 860°C / air cooling + 500°C / air cooling. The mechanical properties of the finished alloy plate are: σ b : 1220MPa, σ 0.2 : 1150MPa, δ: 10%, ψ: 40%.

[0015] (2) The alloy ingot is billet forged at 1150°C, the rolling temperature of the finished product is controlled at 850°C, and the alloy plate is treated at 860°C / water cooling + 530°C / air cooling. The mechanical properties of the finished alloy plat...

Embodiment 2

[0017] The composition of the alloy is Ti-5.0Al--2.9V-2.0Cr-2.0Fe, that is, Al: 5.0%, V: 2.9%, Cr: 2.0%, Fe: 2.0%, and the balance is Ti and unavoidable impurities.

[0018] The ratio of raw materials is calculated by weight percentage: 10% of Ti-6Al-4V alloy turnings, 3.1% of Fe-80V master alloy, 2.0% of electrolytic chromium, 1.4% of industrial iron, 4.4% of aluminum beans, and 79% of grade 2 titanium sponge.

[0019] (1) The alloy ingot is forged at a temperature of 1100°C. The rolling temperature of the finished bar is controlled at 850°C. The alloy bar is treated at 800°C / air cooling + 520°C / air cooling. The mechanical properties of the finished alloy bar are: σ b : 1340MPa, σ 0.2 : 1250MPa, δ: 9%, ψ: 25%.

[0020] (2) The alloy ingot is forged at a temperature of 1100°C. The processing temperature of the finished wire is controlled at 800°C. The alloy wire is treated at 750°C / air cooling + 520°C / air cooling. The mechanical properties of the finished alloy wire are: σ ...

Embodiment 3

[0022] The composition of the alloy is Ti-5.5Al-2.5V-1.2Cr-2.8Fe, that is, Al: 5.5%, V: 2.5%, Cr: 1.2%, Fe: 1.3%, and the balance is Ti and not Avoid impurities.

[0023] The ratio of raw materials is calculated by weight percentage: Ti-6Al-4V alloy turnings 20%, Al-85V master alloy 2%, electrolytic chromium 1.2%, industrial iron 2.8%, aluminum beans 4%, 1 grade sponge titanium 70%

[0024] (1) Alloy ingots are forged at a temperature of 1100°C. The finished product rolling temperature is controlled at 840°C. The alloy finished rods are treated at 750°C / air cooling +550°C / air cooling. The mechanical properties of the alloy finished rods are: σ b : 1200MPa, σ 0.2 : 1150MPa, δ: 13%, ψ: 40%.

[0025] (2) The alloy ingot is billet forged at 1100°C, the rolling temperature of the finished product is controlled at 850°C, the alloy plate is treated at 750°C / air cooling, and the mechanical properties of the finished alloy bar are: σ b : 1070MPa, σ 0.2 : 1040MPa, δ: 18%, ψ: 50%.

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 low-cost and high-strength titanium alloy. The alloy is to mix a Al-V or Fe-V intermediate alloy, electrolytic chromium, pure titanium or titanium alloy decoration shavings, industrial iron and titanium sponge to press electrodes according to the designed compositions and to be cast into an alloy pig through secondary smelting by a general vacuum consumable electrode arc furnace. The compositions by weight percent of the alloy are 4 to 6 percent of aluminum, 1.9 to 2.9 percent of vanadium, 1 to 3 percent of chromium, 1 to 3 percent of iron, and the balance being titanium and unavoidable impurities. Compared with a Ti-6Al-4V alloy and the prior high strength titanium alloy, the low-cost and high-strength titanium alloy has the advantages that the alloy has high plasticity under the condition that high strength is guaranteed; the cost of the alloy is lower than that of the Ti-6Al-4V; the hot workability of the alloy is good; and the alloy is easy to produce and is suitable for the requirements of various application fields on the low-cost and high-strength titanium alloy.

Description

technical field [0001] The invention relates to a titanium alloy, in particular to a low-cost high-strength titanium alloy, which is a high-strength α+β two-phase titanium alloy strengthened by multiple elements. Background technique [0002] The α+β two-phase titanium alloy represented by Ti-6Al-4V can be strengthened by heat treatment, and has a large structure variability, which can meet different service conditions, so it has been widely used. Due to the need of expanding the application field, further improving the strength and reducing the cost of this type of alloy has become an important development trend. Usually, increasing the strength of metal materials will lead to the loss of material plasticity or the increase of cost. For α+β two-phase titanium alloys, increasing the β-stabilizing elements in the alloy is the basic method to improve the strength. On the one hand, sufficient β-stabilizing elements can play the role of solid solution strengthening, on the oth...

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): C22C14/00
Inventor 葛鹏毛小南周伟戚运莲洪权赵永庆
Owner WESTERN METAL MATERIAL
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