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High-performance Ti alloy and preparation method thereof

A titanium alloy, high-performance technology, applied in the field of metallurgy, to achieve the effects of excellent mechanical properties, improved toughness, and high precision

Inactive Publication Date: 2016-03-23
JIANGSU HUIZHI INTPROP SERVICES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with the advanced aircraft in Europe and the United States, there is still a certain gap, and continuous efforts are needed to shorten this gap as much as possible.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: The high-performance titanium alloy of this embodiment includes the following chemical elements in weight percent: C, 0.08, Si, 0.3%, O, 0.1%, W, 2%, Mn, 1.5%, Cr, 3.0%, Co, 1.0%, B, 0.3%, V, 0.15%, Al, 2.5%, N, 0.1%, Sn, 6.5%, Te, 3%, Mo, 0.08%, Ni≤0.40%, and the balance is titanium.

[0016] The preparation method of the high-performance titanium alloy of this embodiment comprises the following preparation steps:

[0017] S1. Calculating the ratio of sponge titanium, Al-V, Al-Mo, Fe-B master alloy, pure Al, and pure Fe according to the composition of each element of the titanium alloy, and preparing;

[0018] S2, the sponge titanium, Al-V, Al-Mo, Fe-B master alloy, pure Al and pure Fe in the step S1 are put into the vacuum furnace according to the ratio and melted at a high temperature of 17000±20°C and kept for 12-15 minutes, and then Casting into a semi-finished product in a vacuum state; the vacuum degree of the vacuum furnace is about 10^(-4) Pa; th...

Embodiment 2

[0020] Embodiment 2: The high-performance titanium alloy of this embodiment includes the following chemical elements in weight percentage: C, 0.12%, Si, 0.5%, O, 0.5%, W, 5%, Mn, 3.5%, Cr, 5.0% , Co, 1.6%, B, 0.8%, V, 0.25%, Al, 4%, N, 0.5%, Sn, 10%, Te, 5%, Mo, 1.25%, Ni≤0.40%, the balance is titanium .

[0021] The preparation method of the high-performance titanium alloy of this embodiment comprises the following preparation steps:

[0022] S1. Calculating the ratio of sponge titanium, Al-V, Al-Mo, Fe-B master alloy, pure Al, and pure Fe according to the composition of each element of the titanium alloy, and preparing;

[0023] S2, the sponge titanium, Al-V, Al-Mo, Fe-B master alloy, pure Al and pure Fe in the step S1 are put into the vacuum furnace according to the ratio and melted at a high temperature of 17000±20°C and kept for 12-15 minutes, and then Casting into a semi-finished product in a vacuum state; the vacuum degree of the vacuum furnace is about 10^(-4) Pa; th...

Embodiment 3

[0025] Embodiment 3: The high-performance titanium alloy of this embodiment includes the following chemical elements in weight percentage: C, 0.1%, Si, 0.35%, O, 0.2%, W, 2.5%, Mn, 2.0%, Cr, 3.5% , Co, 1.2%, B, 0.4%, V, 0.17%, Al, 2.9%, N, 0.2%, Sn, 7.5%, Te, 3.5%, Mo, 0.5%, Ni≤0.40%, the balance is titanium .

[0026] The preparation method of the high-performance titanium alloy of this embodiment comprises the following preparation steps:

[0027] S1. Calculating the ratio of sponge titanium, Al-V, Al-Mo, Fe-B master alloy, pure Al, and pure Fe according to the composition of each element of the titanium alloy, and preparing;

[0028] S2, the sponge titanium, Al-V, Al-Mo, Fe-B master alloy, pure Al and pure Fe in the step S1 are put into the vacuum furnace according to the ratio and melted at a high temperature of 17000±20°C and kept for 12-15 minutes, and then Casting into a semi-finished product in a vacuum state; the vacuum degree of the vacuum furnace is about 10^(-4) ...

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Abstract

The invention provides a high-performance Ti alloy and a preparation method thereof. The high-performance Ti alloy comprises the following chemical elements in percentage by weight: 0.08-0.12% of C, 0.3-0.5% of Si, 0.1-0.5% of O, 2-5% of W, 1.5-3.5% of Mn, 3.0-5.0% of Cr, 1.0-1.6% of Co, 0.3-0.8% of B, 0.15-0.25% of V, 2.5-4% of Al, 0.1-0.5% of N, 6.5-10% of Sn, 3-5% of Te, 0.08-1.25% of Mo, 0.40% or less of Ni and Ti in balancing amount. The high-performance Ti alloy provided by the invention has the characteristics of relatively low density, high specific strength, good corrosion resistance, good stability, excellent mechanical properties, good hydrolysis resistance property, high precision, low cost and the like, and has a very wide application prospect as a high-performance Ti alloy material in the fields of automobiles, chemical engineering, electricity, aerospace and the like.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to a high-performance titanium alloy and a preparation method thereof. Background technique [0002] Titanium and its alloys are an important metal material that emerged in the 20th century. Compared with steel, aluminum and other metal materials, it has the advantages of high specific strength, good medium temperature performance and good corrosion resistance. In just half a century, titanium and titanium alloys have developed rapidly and become an important part of the material field. Titanium and its alloys are mainly used in the aviation field, and are also more and more widely used in the chemical industry, nuclear industry, aerospace, ships and other fields. Therefore, titanium alloy technology is listed as the key technology of national defense technology and the basic technology for key development. In aviation, titanium alloy is one of the main structural materials of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C14/00C22C1/03C22F1/18
CPCC22C14/00C22C1/03C22F1/183
Inventor 王婷婷殷源杰王磊程龙刘丹
Owner JIANGSU HUIZHI INTPROP SERVICES CO LTD
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