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Zirconium-containing TB7 titanium alloy and preparation method thereof

A titanium alloy and alloy technology, applied in the field of titanium alloy and its preparation, can solve the problems of titanium alloy strength and corrosion resistance.

Inactive Publication Date: 2018-11-30
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, with the widespread application of titanium and titanium alloys, the development of industry and the application environment have put forward more stringent requirements on the performance of titanium alloys. It is difficult for traditional titanium alloys to meet the current engineering application in terms of strength and corrosion resistance. Standard, and high-strength and corrosion-resistant titanium alloy is one of the key directions of current research, development and application

Method used

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  • Zirconium-containing TB7 titanium alloy and preparation method thereof
  • Zirconium-containing TB7 titanium alloy and preparation method thereof
  • Zirconium-containing TB7 titanium alloy and preparation method thereof

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preparation example Construction

[0040] The present invention also provides a method for preparing the zirconium-containing TB7 titanium alloy described in the above technical solution, comprising the following steps:

[0041] Melting the alloy raw material according to the composition ratio of the zirconium-containing TB7 titanium alloy to obtain an alloy ingot;

[0042] Hot rolling the alloy ingot to obtain an alloy plate;

[0043] The alloy plate is subjected to solid solution treatment to obtain a zirconium-containing TB7 titanium alloy.

[0044] The invention melts alloy raw materials according to the composition ratio of the zirconium-containing TB7 titanium alloy to obtain alloy ingots. In the present invention, there is no special limitation on the type of the alloy raw material, and the alloy raw material known to those skilled in the art for smelting alloys can be used. In the present invention, the alloy raw material preferably includes titanium, zirconium and molybdenum. The present invention d...

Embodiment 1

[0060] Soak 60g of industrial-grade titanium sponge, 10g of zirconium sponge, and 30g of pure molybdenum in absolute ethanol, ultrasonically clean and air-dry;

[0061] Put the above-mentioned raw materials after pretreatment into the water-cooled copper crucible in the non-consumable vacuum arc melting furnace, and the vacuum degree is 5×10 -3 Pa, non-consumable vacuum smelting under a nitrogen atmosphere with a pressure of 0.06MPa, the melting temperature is 2500°C, the working current during the smelting process is 500A, the ingot is turned over six times, and the ingot is smelted for 3 minutes each time to obtain an alloy ingot .

[0062] Put the alloy ingot into the muffle furnace and raise the temperature to 910°C at a heating rate of 10°C / min, and keep it warm for 0.5 hours, then quickly take it out and roll it on a twin-roll mill at a rolling temperature of 910°C, using multi-pass Each deformation, each reduction is 2mm, and the final deformation of the alloy reaches ...

Embodiment 2

[0065] Soak 49g of industrial-grade titanium sponge, 20g of zirconium sponge, and 31g of pure molybdenum in absolute ethanol, ultrasonically clean and air-dry;

[0066] Put the above-mentioned raw materials after pretreatment into the water-cooled copper crucible in the non-consumable vacuum arc melting furnace, and the vacuum degree is 5×10 -3 Pa, non-consumable vacuum smelting under a nitrogen atmosphere with a pressure of 0.06MPa, the melting temperature is 2500°C, the working current during the smelting process is 500A, the ingot is turned over six times, and the ingot is smelted for 3 minutes each time to obtain an alloy ingot .

[0067] Put the alloy ingot into the muffle furnace and raise the temperature to 900°C at a heating rate of 10°C / min, and keep it warm for 0.5 hours, then quickly take it out and roll it on a twin-roll mill at a rolling temperature of 900°C, using multi-pass Each deformation, each reduction is 2mm, and the final deformation of the alloy reaches ...

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Abstract

The invention provides a zirconium-containing TB7 titanium alloy which is prepared from, by mass, 16%-60% of Ti, 9%-50% of Zr and 30%-35% of Mo. In the titanium alloy, the zirconium element and Ti canform an infinite solid solution, therefore, solution strengthening is achieved, the initiating passive potential of the zirconium element is more negative than Ti, passivation can still be generatedeven in the weak oxidation environment, the ability of generating a compact oxidation film on the surface is improved, and corrosion resistance of the alloy is improved. According to records of embodiments, compared with Ti-32Mo alloy, in the TB7 titanium alloy, the tensile strength can be improved by 13.84% or more and can reach up to 42.95%, and the corrosion resisting strength can be improved by 11.62% or more and can reach up to 38.97%.

Description

technical field [0001] The invention relates to the technical field of alloys, in particular to a titanium alloy and a preparation method thereof. Background technique [0002] Titanium and titanium alloys are a new type of metal material with the highest specific strength among all metals and excellent plasticity. They have excellent corrosion resistance in chlorates, chlorides, sulfates, organic acids and most alkaline media. Performance, and has excellent anti-fatigue, anti-creep and non-magnetic properties, so in its application, it can reduce maintenance costs, extend the life cycle, and greatly improve reliability. [0003] However, with the widespread application of titanium and titanium alloys, the development of industry and the application environment have put forward more stringent requirements on the performance of titanium alloys. It is difficult for traditional titanium alloys to meet the current engineering application in terms of strength and corrosion resist...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C14/00C22C16/00C22C30/00C22C1/02C22F1/18
CPCC22C14/00C22C1/02C22C16/00C22C30/00C22F1/183C22F1/186
Inventor 刘日平张星陈博涵刘曙光马明臻张新宇高伟
Owner YANSHAN UNIV
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