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High hardness titanium alloy and preparing method thereof

A titanium alloy and high hardness technology, applied in the field of high hardness titanium alloy and its preparation, can solve the problems of not being suitable for industrial production, high manufacturing cost, complicated process, etc., and achieve the effect of good performance, good thermal stability and uniform structure

Active Publication Date: 2018-09-14
BEIJING JINYU SHUNDA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the preparation method disclosed in this application has high manufacturing cost and complicated procedures, and is not suitable for industrialized production.

Method used

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  • High hardness titanium alloy and preparing method thereof

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Experimental program
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Effect test

Embodiment 1

[0040] Example 1: Preparation and detection of titanium alloy material (1)

[0041] The composition ratio of the titanium alloy prepared in this embodiment is Ti-6Al-2.5Sn-3Zr-2Mo-0.5V-0.5Cr-1Nb (6Al means Al with a weight percentage content of 6%, and the following similar expressions are the same), titanium alloy aluminum The equivalent is 8.13, and the molybdenum equivalent is 3.49. The raw materials for titanium alloy preparation are Al-Sn50, Al-Mo80, Al-V60, Al-Nb62, electrolytic chromium, aluminum beans, zirconium sponge and grade 0 titanium sponge.

[0042] The specific preparation process is:

[0043] (1) According to the design composition, the raw materials are mixed and then pressed to obtain electrodes, which are smelted in a vacuum consumable electric arc furnace three times to obtain ingots;

[0044] (2) The alloy adopts three-fire forging process, blank forging: 1150°C, deformation amount 50%; second-fire forging: 960°C, deformation amount 50%; third-fire forg...

Embodiment 2

[0048] Embodiment 2: Preparation and detection of titanium alloy material (two)

[0049] The composition ratio of the titanium alloy prepared in this example is Ti-6.5Al-2Sn-2.5Zr-2.5Mo-1.5V-2Cr-2Nb, the aluminum equivalent of the titanium alloy is 8.38, and the molybdenum equivalent is 7.52. The raw materials for titanium alloy preparation are Al-Sn50, Al-Mo80, Al-V60, Al-Nb62, electrolytic chromium, aluminum beans, zirconium sponge and grade 0 titanium sponge.

[0050] The specific preparation process is:

[0051] (1) According to the design composition, the raw materials are mixed and then pressed to obtain electrodes, which are smelted in a vacuum consumable electric arc furnace three times to obtain ingots;

[0052] (2) The alloy adopts three-fire forging process, blank forging: 1100°C, deformation amount 50%; second-fire forging: 920°C, deformation amount 50%; third-fire forging: 900°C, deformation amount 50%;

[0053] (3) Rolling process: the rolling temperature is 91...

Embodiment 3

[0059] Embodiment 3: Preparation and detection of titanium alloy material (three)

[0060] The composition ratio of the titanium alloy prepared in this example is Ti-7Al-2Sn-2Zr-3Mo-2V-2Cr-3Nb, the aluminum equivalent of the titanium alloy is 8.8, and the molybdenum equivalent is 8.67. The raw materials for titanium alloy preparation are Al-Sn50, Al-Mo80, Al-V60, Al-Nb62, electrolytic chromium, aluminum beans, zirconium sponge and grade 0 titanium sponge.

[0061] The specific preparation process is:

[0062] (1) According to the design composition, the raw materials are mixed and then pressed to obtain electrodes, which are smelted in a vacuum consumable electric arc furnace three times to obtain ingots;

[0063] (2) The alloy adopts three-fire forging process, blank forging: 1150°C, deformation amount 50%; second-fire forging: 940°C, deformation amount 50%; third-fire forging: 920°C, deformation amount 50%;

[0064] (3) Rolling process: the rolling temperature is 930° C., ...

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Abstract

The invention belongs to the technical field of alloy materials, and relates to a high hardness titanium alloy and a preparing method thereof. The high hardness titanium alloy mainly comprises Ti andfurther comprises, by weight, 6.0%-8.0% of Al, 0.5%-2.5% of Sn, 1.0%-3.0% of Zr, 2.0%-4.0% of Mo, 0.5%-2.5% of V, 0.5%-3.0% of Cr, 1.0%-3.0% of Nb and a small quantity of inevitable impurities. The preparing method comprises the following steps that (1) raw materials including an aluminum tin intermediate alloy, an aluminum molybdenum intermediate alloy, an aluminum vanadium intermediate alloy, analuminum niobium intermediate alloy, aluminum shots, electrolysis pure chrome, sponge zirconium and sponge titanium are mixed to be pressed to obtain an electrode, and the electrode is smelted to prepare an alloy primary smelting casting ingot, an alloy secondary smelting casting ingot and an alloy thrice smelting casting ingot; and (2) after casting ingot surfaces are scaled, dead head cutting is carried out after X-ray detection is completed, cogging forging and multi-heating number high-temperature forging are carried out, and solution treatment and multi-stage aging treatment are carriedout after rolling to obtain the high hardness titanium alloy. The high hardness titanium alloy has the good hardness, strength and plasticity which are matched.

Description

technical field [0001] The invention belongs to the technical field of alloy materials, and relates to a high-hardness titanium alloy and a preparation method thereof. Background technique [0002] With the advancement of science and technology, weight loss and light weight have become an important direction for the development of applied materials in the fields of modern aviation, aerospace, weapons, chemicals, automobiles, medical care, etc. Among them, titanium alloys, which are characterized by light weight and high strength, have been adopted by the world. A number of countries have listed it as a new type of structural metal material with strategic significance in the 21st century. [0003] Most of the existing research on titanium alloy materials focuses on the improvement of tensile strength and the plasticity that can be applied industrially, because high-strength titanium alloys can further enhance the weight reduction effect of titanium alloys. However, there are...

Claims

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Application Information

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IPC IPC(8): C22C14/00C22C1/03C22F1/18
CPCC22C1/03C22C14/00C22F1/183
Inventor 刘建尊景建元王艳玲
Owner BEIJING JINYU SHUNDA TECH CO LTD
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