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A high-performance, low-cost and high-strength titanium alloy

A titanium alloy, low-cost technology, applied in the field of metal materials, can solve the problems of insignificant cost reduction, less titanium residual material, limited residual material, etc., and achieves the effects of various smelting methods, reducing raw material costs, and reducing preparation costs.

Active Publication Date: 2021-11-09
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Application No. 201410628558.4 Patent "A Low-cost Titanium Alloy Adding Titanium Residuals" Although the method of adding more than a dozen titanium alloy remnants is used to reduce the cost of the alloy, the applicant adds β-stabilizing elements in order to ensure the performance of the alloy Relatively less, so the application of titanium residues is also relatively less, the effect of reducing costs is not obvious
In fact, due to the limitation of composition and performance, the existing low-cost alloys often add very limited residues

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The titanium alloy of this example is composed of the following mass percentages: Al 6.2%, V 2.8%, Mo 0.4%, Zr 0.8%, Fe≤0.5%, O≤0.35%, the balance is Ti and other unavoidable impurities , the preparation process of the titanium alloy is as follows: the TC4 alloy bar reclaimed material and the TA15 alloy bar reclaimed material are mixed according to the mass ratio of 6:4, and then smelted in a vacuum consumable electric arc furnace to obtain a titanium alloy ingot, and then Titanium alloy ingots are processed by forging and rolling to obtain titanium alloy products; the tensile strength of the titanium alloy products after heat treatment is Rm=1020MPa, elongation A=14%, impact toughness a KU =65.2J / cm 2 .

Embodiment 2

[0021] The titanium alloy of this embodiment is composed of the following mass percentages: Al 6.25%, V 2.5%, Mo0.34%, Zr 1%, Fe≤0.5%, O≤0.35%, the balance is Ti and unavoidable others Impurities, the preparation process of the titanium alloy is as follows: the TC4 alloy plate reclaimed material and the TA15 alloy plate reclaimed material are mixed according to the mass ratio of 5:5 and then smelted in a vacuum consumable electric arc furnace to obtain a titanium alloy ingot, and then the titanium alloy The alloy ingot is processed by forging and rolling to obtain a titanium alloy product; the tensile strength of the titanium alloy product after heat treatment is Rm=950MPa, the elongation A=20.5%, and the impact toughness is a KU =80.6J / cm 2 .

Embodiment 3

[0023] The titanium alloy of this example is composed of the following mass percentages: Al 6.225%, V2.65%, Mo0.45%, Zr 0.9%, Fe≤0.5%, O≤0.35%, the balance is Ti and unavoidable For other impurities, the preparation process of the titanium alloy is as follows: the TC4 alloy riser reclaimed material and the TA15 alloy riser reclaimed material are mixed according to the mass ratio of 5.5:4.5 and then smelted in a vacuum consumable electric arc furnace to obtain titanium alloy ingots. Then the titanium alloy ingot is prepared by forging and rolling to obtain a titanium alloy product; the tensile strength of the titanium alloy product after heat treatment is Rm=1000MPa, the elongation A=15.5%, and the impact toughness is a KU =68.6J / cm 2 .

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Abstract

The invention discloses a high-performance, low-cost and high-strength titanium alloy. The titanium alloy is composed of the following components in mass percentage: Al5.1%-6.25%, V2.5%-2.8%, Mo0.4%-0.5%, Zr0.8%~1.0%, Fe≤0.5%, O≤0.35%, the balance is Ti and other unavoidable impurities. The titanium alloy is obtained by mixing TC4 alloy reclaimed materials and TA15 alloy reclaimed materials by melting. The titanium alloy of the present invention is prepared by directly mixing TC4 alloy reclaimed materials and TA15 alloy reclaimed materials in proportion and then smelting. Through the reasonable collocation and utilization of the two reclaimed materials, under the premise of ensuring that the titanium alloy has excellent mechanical properties, the The cost of raw materials greatly reduces the cost of preparing titanium alloys, and meets the high performance requirements of titanium alloy structural parts in various industrial fields.

Description

technical field [0001] The invention belongs to the technical field of metal materials, and in particular relates to a high-performance, low-cost and high-strength titanium alloy. Background technique [0002] Due to its low density, high specific strength, corrosion resistance, and weldability, titanium alloys are widely used in important industrial fields such as aerospace, ships, weapons, and nuclear industries. The increasing application demand for materials in various fields has promoted the innovation and progress of titanium alloy technology, especially the aviation industry, which is the driving force for the development and application of high-end titanium alloys. However, this high-end application and high-tech platform have also pushed up the cost of titanium alloys, making the price of titanium alloys high. Limit its further use in the fields of ships, weapons, construction, automobiles, sports and leisure. At present, the biggest problem that titanium alloys c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C14/00C22C1/03
CPCC22C1/03C22C14/00
Inventor 辛社伟周伟李倩张思远毛小南赵永庆洪权贾蔚菊
Owner NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH