Low cost alpha and beta type titan alloy

A titanium alloy, low-cost technology, applied in the field of alloys, can solve the problems of low cost performance and high price, and achieve the effect of reducing manufacturing costs, broad market prospects, and superior cost performance.

Inactive Publication Date: 2009-04-08
北京正安广泰新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, in order to overcome the shortcoming that the Ti-6Al-4V alloy is expensive and causes its cost performance to be low, the present invention provides an α+β type titanium alloy whose cost performance is significantly better than that of the Ti-6Al-4V alloy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The titanium alloy of the present invention is manufactured by casting pressure processing method, specifically according to the composition of the alloy, the weight percentage of the alloy is composed of: 6.0% aluminum, 1.0% chromium, 0.8% iron, and the rest are titanium and unavoidable impurities, wherein the chromium element is aluminum Chromium is added in the form of master alloy, and iron is added in the form of aluminum-iron master alloy. The electrodes composed of the above alloy elements are smelted into ingots by secondary vacuum self-consumption, and the smelting vacuum degree is required to be lower than 1Pa. During the smelting process, the total weight percentage of carbon, hydrogen, oxygen and nitrogen elements is controlled not to exceed 0.4. The ingot is forged at 1000-1200°C, and then made into a slab at 900-1000°C. Then hot rolling is carried out, the hot rolling temperature is between 800-1000°C, the hot rolled plate is annealed and then cold rolled...

Embodiment 2

[0021] The titanium alloy of the present invention is produced by casting pressure processing method, specifically according to the alloy composition, the weight percentage of the alloy is composed of: aluminum 5.0%, chromium 1.0%, iron 1.0%, the rest is titanium and unavoidable impurities, wherein the chromium element is aluminum Chromium is added in the form of master alloy, and iron is added in the form of aluminum-iron master alloy. The electrodes composed of the above alloy elements are smelted into ingots by secondary vacuum self-consumption, and the smelting vacuum degree is required to be lower than 1Pa. During the smelting process, the total weight percentage of carbon, hydrogen, oxygen and nitrogen elements is controlled not to exceed 0.4. The ingot is forged at 1000-1200°C, and then made into a slab at 900-1000°C. Then hot rolling is carried out, the hot rolling temperature is between 800-1000°C, the hot rolled plate is annealed and then cold rolled to obtain a tit...

Embodiment 3

[0026] Embodiment 3 is basically the same as Embodiment 1, the difference is that the weight percentage of the alloy consists of: aluminum 6.0%, chromium 0.3%, iron 1.0%, molybdenum 0.8%, the rest is titanium and unavoidable impurities, molybdenum and It is added in the form of aluminum molybdenum master alloy.

[0027] The obtained titanium alloy plate (thickness is 1.2mm) is tested, and the mechanical properties at room temperature are shown in Table 3.1

[0028] Table 3.1 Mechanical properties of titanium alloy of the present invention at room temperature

[0029] Sampling direction

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Abstract

The invention discloses a low-cost alpha plus beta type titanium alloy, which consists of 4.5-8 percent of aluminum, 0.3-3 percent of chromium, 0.3-2 percent of iron, and the rest of titanium and inevitable impurities by weight percent, wherein 0-3 percent of molybdenum, 0-3 percent of tin or 0-3 percent of zirconium can also be included. The alpha plus beta type titanium alloy of the invention has low cost of constituent elements and high comprehensive mechanical performance equivalent to Ti-6Al-4V, thus not only reducing the production cost of the titanium alloy, but also improving the cost performance. Therefore, the low-cost alpha plus beta type titanium alloy has wide market prospect.

Description

technical field [0001] The invention relates to the technical field of alloys, in particular to a low-cost α+β-type titanium alloy. Background technique [0002] α+β-type titanium alloys are widely used in aviation, aerospace, automobiles, golf club heads, bicycles and other fields. Its typical representative is the Ti-6Al-4V alloy successfully developed in the United States in 1954. Ti-6Al-4V alloy has good comprehensive properties. Ti-6Al-4V alloys are currently used in more than half of all titanium alloys, but because Ti-6Al-4V alloys contain precious metal vanadium, their prices are quite expensive. Contents of the invention [0003] In view of this, in order to overcome the disadvantage of Ti-6Al-4V alloy being expensive and resulting in low cost performance, the present invention provides an α+β type titanium alloy with significantly better cost performance than Ti-6Al-4V alloy. [0004] The low-cost α+β-type titanium alloy of the present invention is composed of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C14/00
Inventor 蔡萍
Owner 北京正安广泰新材料科技有限公司
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