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Medium-strength and high-ductility titanium alloy

A titanium alloy and component technology, which is applied in the field of low-cost titanium alloys, can solve the problems of unsatisfactory use effect, high cost, low strength and hardness of Ti-4Zr titanium alloy, and achieves improvement of cold working performance, reduction of raw material costs, The effect of reducing the processing cost

Inactive Publication Date: 2009-07-08
BAOJI TITANIUM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The strength and hardness of the Ti-4Zr titanium alloy used are low, and the use effect is not ideal, and because 4% of zirconium is added to the alloy, the cost is relatively high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The formula of this example: Al: 2.8%, Mo: 0.5%, V: 0.5%, Zr: 0.8%, Fe: 0.3%, the balance is Ti and unavoidable impurities, using secondary sponge titanium, Al-V , Al-Mo, sponge Zr, iron nails and aluminum beans, according to the above weight percentage ingredients, mixing, pressing into a consumable electrode, two smelting in a vacuum consumable electric arc furnace, one of which has a crucible specification of Φ110mm, The melting voltage is 27-32V, the current is 2500-3200A; the specification of the secondary melting crucible is Φ150mm, the melting voltage is 29-31V, and the current is 4000-5000A. The ingot is heated at 1100-1200°C, forged into a slab with a thickness of 80mm, and the surface defects of the slab are cleaned. Heating to about 950°C and rolling into a slab with a thickness of 4.5mm, and then heating to about 850°C and rolling into a slab with a thickness of 2.8mm. The slab is annealed and ground at 750°C, rolled to 1.8mm on a 1200 cold rolling mill, an...

Embodiment 2

[0028] According to the following formula: Al: 4.0%, Mo: 0.6%, V: 0.9%, Zr: 1.0%, Fe: 0.2, the balance is Ti and unavoidable impurities, using secondary sponge titanium, Al-V, Al -Mo, sponge Zr, iron nails and aluminum beans, according to the above weight percentages, mix, press into consumable electrodes, and carry out two melting in a vacuum consumable electric arc furnace, one of which has a crucible size of Φ110mm, melting voltage 27~35V, current 2500~3300A; secondary melting crucible specification is Φ150mm, melting voltage 29~33V, current 4000~5300A. The ingot is heated at 1150-1200°C, forged into a slab with a thickness of 70mm, and the surface defects of the slab are cleaned. Heating to about 1000°C and rolling into a slab with a thickness of 4.5mm, and then heating to about 940°C and rolling into a slab with a thickness of 2.8mm. After annealing and grinding at 820°C, the slab is rolled to 1.8mm on a 1200 cold rolling mill, and after annealing at 820°C / 30′, it is fin...

Embodiment 3

[0032] According to the following formula: Al: 3.4%, Mo: 0.3%, V: 0.9%, Zr: 1.0%, Fe: 1.0, the balance is Ti and unavoidable impurities, using secondary sponge titanium, Al-V, Al -Mo, sponge Zr, iron nails and aluminum beans, according to the above weight percentages, mix, press into consumable electrodes, and carry out two melting in a vacuum consumable electric arc furnace, one of which has a crucible size of Φ110mm, melting voltage 25~35V, current 2600~3500A; secondary melting crucible specification is Φ150mm, melting voltage 28~31V, current 4000~5000A. The ingot is heated at 1100-1200°C, and forged into a slab with a thickness of 70mm, and the surface defects of the slab are cleaned. Heating to about 950°C and rolling into a slab with a thickness of 4.5mm, and then heating to about 850°C and rolling into a slab with a thickness of 2.8mm. The slab is annealed and ground at 750°C, rolled to 1.8mm on a 1200 cold rolling mill, and finally cold-rolled to 1.18mm after annealed ...

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Abstract

The invention belonging to a low cost titanium alloy for sports products and other civil industries, relates to mezzo-forte high-ductility titanium alloy.The invention is characterized in that the components of the mezzo-forte high-ductility titanium alloy are aluminum of 2-4.5% by weight, molybdenum is 0.1-1.5% by weight, zirconium is 0.5-2% by weight, Fe is 0.1-1.5% by weight, and the rest is Ti and ineluctable foreign matters; the sum of each component content of the raw material is 100%. The manufacturing process comprises the following steps: batching according to a certain weight percentage, batch mixing and pressing to form consumable electrodes, performing a second smelting in the vacuum consumable arc furnace, and then making casting ingot into casting ingot boards.Because of the solution strength effect of aluminum, zirconium, molybdenum, vanadium, iron and the like, the titanium alloy of the invention can remain a definite strength level, the cost of the raw materials of the alloy can be reduced, cold working performance of the alloy is improved, the cold deformation amount is increased, the process flow is shortened, and correspondingly, the processing cost of the materials is reduced, processing performances of winding, bending, press forming and the like of the materials are improved, and shaping requirements of users can be further satisfied.

Description

technical field [0001] The invention relates to a medium-strength high-plastic titanium alloy, which belongs to a low-cost titanium alloy used in sports products and other civil industries. Background technique [0002] Titanium and titanium alloys are known as "the third rising metal" because of their low density, high yield ratio, and corrosion resistance. They are an important strategic metal material and play an important role in the development and construction of the national economy. . With the gradual deepening of people's understanding of titanium, titanium and titanium alloys have been widely used, especially in sports products, construction, electric power, automobiles and other civilian industries. The amount of titanium used is increasing year by year. [0003] Titanium golf heads are a typical application of titanium alloys in the sporting goods industry, and the amount of titanium used in this industry has maintained a relatively stable growth. The upper and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C14/00C22C1/02C22F1/18
Inventor 王韦琪王小翔乔璐王新羊玉兰张永强
Owner BAOJI TITANIUM IND CO LTD
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