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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 effects of reducing manufacturing costs, broad market prospects, and superior cost performance

Inactive Publication Date: 2008-12-31
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 Ti-6Al-4V alloy is expensive so that its cost performance is low, the present invention provides a kind of α+3 type titanium alloy whose cost performance is obviously better than that of Ti-6Al-4V alloy

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] 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

[0020] 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: aluminum 5.0, chromium 1.0, iron 1.0, and the rest are titanium and unavoidable impurities, wherein the chromium element is an aluminum-chromium master alloy The iron element 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 tita...

Embodiment 3

[0025] Embodiment 3 is basically the same as Embodiment 1, the difference is that the weight percentage of the alloy is composed of: aluminum 6.0, chromium 0.3, iron 1.0, molybdenum 0.8, the rest are titanium and unavoidable impurities, molybdenum is based on aluminum molybdenum master alloy form to join.

[0026] The obtained titanium alloy plate (thickness is 1.2mm) is tested, and the mechanical properties at room temperature are shown in Table 3.1

[0027] Table 3.1 Mechanical properties of titanium alloy of the present invention at room temperature

[0028] Sampling direction

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PUM

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Abstract

The invention discloses a low-cost Alpha+Beta type titanium alloy, the titanium alloy contains, in weight percent: aluminum 4.5 to 8 percent, chromium 0.3 to 2 percent, iron 0.3 to 2 percent, molybdenum 0 to 1 percent, balance titanium and unavoidable impurities. The Alpha+Beta type titanium alloy of the invention contains no noble metal of vanadium, and has equivalent comprehensive mechanical properties compared with Ti-6Al-4V, thereby increasing the price performance ratio while reducing the titanium alloy manufacturing cost, and having the broad 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. At present, Ti-6Al-4V alloy has accounted for more than half of all titanium alloys, but because Ti-6Al-4V alloy contains precious metal vanadium, its price is also 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+3 type titanium alloy whose cost performance is obviously better than that of Ti-6Al-4V alloy. [0004] A low-cost α+β-type titanium alloy of the present invention, ...

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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