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Beta titanium alloy and preparation method thereof

A technology of beta titanium alloy and alloy material, applied in the field of beta titanium alloy and its preparation, can solve the problems of high melting point and high price, and achieve the effect of excellent comprehensive performance, low cost and good combination

Inactive Publication Date: 2010-11-17
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although it has high strength and high plasticity, the tensile strength is 1060-1200MPa, and the shrinkage rate can reach 30%-50%, but the alloy contains tantalum, a precious metal with a high melting point and expensive price.

Method used

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  • Beta titanium alloy and preparation method thereof
  • Beta titanium alloy and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0023] Example 1: Preparation of Ti-9V-4Al-2Zr-13Nb-2Cr titanium alloy

[0024] Put the spongy titanium and zirconium into the non-consumable vacuum electric arc furnace respectively, and evacuate to 5×10 -3 Pa, filled with high-purity argon to 0.7×10 5 After Pa, turn over and smelt twice, then weigh high-purity vanadium, aluminum, chromium, niobium, and previously smelted titanium and zirconium according to weight percentage, clean them, and put them into a non-consumable vacuum electric arc furnace. Combined with magnetic stirring, the smelting was repeated 5 times to obtain a β titanium alloy ingot. Put the β titanium alloy ingot obtained above into a vacuum heat treatment furnace for homogenization heat treatment, and the vacuum degree is 5×10 -3 Pa, after heat treatment at 900°C for 24 hours, cool with the furnace. The heat-treated β-titanium alloy ingot is hot-rolled at 800° C., and the alloy ingot is hot-rolled into a sheet-shaped alloy material with a thickness of 1...

Embodiment 2

[0026] Embodiment 2: Preparation of Ti-9V-3Al-4Cr-3Sn-3.5Nb titanium alloy

[0027] Put the spongy titanium into the non-consumable vacuum electric arc furnace first, and evacuate to 5×10 -3 Pa, filled with high-purity argon to 0.7×10 5 After Pa, turn over and smelt twice, then weigh high-purity vanadium, aluminum, chromium, niobium, tin and previously smelted titanium according to weight percentage, clean them and put them in a non-consumable vacuum electric arc furnace, and combine them according to the previous method. Combined with magnetic stirring, the smelting was repeated 5 times to obtain a β titanium alloy ingot. Put the β titanium alloy ingot obtained above into a vacuum heat treatment furnace for homogenization heat treatment, and the vacuum degree is 5×10 -3Pa, after heat treatment at 900°C for 24 hours, cool with the furnace. The heat-treated β-titanium alloy ingot is hot-rolled at 800° C., and the alloy ingot is hot-rolled into a sheet-shaped alloy material w...

Embodiment 3

[0029] Example 3: Preparation of Ti-6V-3Al-5Zr-8.5Nb-3Mo-2Cr titanium alloy

[0030] Put the spongy titanium and zirconium into the non-consumable vacuum electric arc furnace respectively, and evacuate to 5×10 -3 Pa, filled with high-purity argon to 0.7×10 5 After Pa, turn over and smelt twice, then weigh high-purity vanadium, aluminum, chromium, niobium, molybdenum, and previously smelted titanium and zirconium according to weight percentage, clean them, and put them into a non-consumable vacuum electric arc furnace. method and combined with magnetic stirring for five times of repeated melting to obtain β-titanium alloy ingots. Put the β titanium alloy ingot obtained above into a vacuum heat treatment furnace for homogenization heat treatment, and the vacuum degree is 5×10 -3 Pa, after heat treatment at 1000°C for 12 hours, cool with the furnace. The heat-treated β-titanium alloy ingot is hot-rolled at 700° C., and the alloy ingot is hot-rolled into a sheet-shaped alloy ma...

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Abstract

The invention discloses a beta titanium alloy and a preparation method thereof, relates to a titanium alloy, and provides a beta titanium alloy with excellent combination property and a preparation method thereof. The beta titanium alloy comprises the following components by mass percent: 6-10% of vanadium, 2-4% of aluminum, 2-4% of chromium, 0-13% of niobium, 0-3% of tin, 0-5% of zirconium, 0-4% of molybdenum, 0-0.05% of boron and the balance titanium. The preparation method comprises the following steps: putting the titanium and zirconium in a sponge state into an arc furnace; vacuumizing and then charging argon for smelting; smelting the smelted titanium and zirconium with vanadium, aluminum, chromium, niobium, tin, molybdenum and boron to obtain a beta titanium alloy pig material; carrying out homogenizing heat treatment on the beta titanium alloy pig material, and cooling along with the furnace; rolling the beta titanium alloy pig material after the heat treatment into a schistose alloy material; slicing the obtained schistose alloy material into a sample; and quenching with icy water after the solution treatment, and then carrying out aging to obtain the beta titanium alloy.

Description

technical field [0001] The invention relates to a titanium alloy, in particular to a beta titanium alloy with excellent comprehensive properties and a preparation method thereof. Background technique [0002] Due to its high specific strength and good corrosion resistance, titanium alloy has become the preferred material for aerospace industry, medical engineering, chemical industry and leisure industry. For example, the use of titanium alloys in the aerospace and automotive fields can improve performance and reduce energy consumption, while the use of titanium alloys in golf club heads can make the club head larger and thus hit the ball more accurately and farther. At present, relatively mature β titanium alloys such as Ti-15V-3Cr-3Al-3Sn and Ti-22V-4Al have been developed and widely used in these fields due to their good plasticity, but the above alloys have limited further development due to their low strength; at the same time The addition of a large amount of vanadium,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C14/00C22C1/02C22F1/18
Inventor 马云庆刘旭亮杨水源张欣桥施展黄艺雄张锦彬王翠萍刘兴军
Owner XIAMEN UNIV
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