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Processing technology of Ti5Mo5V2Cr3Al alloy

A processing technology, titanium alloy technology, applied in metal processing equipment, rolling force/roll gap control, temperature control, etc., can solve the problem of the reduction of alloy section shrinkage rate, and achieve improved section shrinkage rate and good ductility in high-strength state. , Good forgeability

Active Publication Date: 2011-06-08
GRIMAT ENG INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the reduction of area of ​​the alloy will decrease while the strength increases.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] According to the following proportions, the main alloying element content (wt%) is: Mo: 4.8; V: 4.9; Cr: 1.81; Al: 3.1; Fe: 0.11; C: 0.008; N: 0.010; : 0.10; the balance is titanium. The ingredients are pressed into electrodes. The Ф380mm ingot was obtained by melting twice in a vacuum consumable electric furnace. The billet is forged at 1050°C, forged at 900°C for 3 times to Ф40mm, and hot rolled at 850°C to Ф11.5mm bar on the rolling mill. Aging at 540°C for 4 hours, air cooling to room temperature. A titanium alloy sample 1 was obtained.

Embodiment 2

[0018] According to the following proportions, the main alloying element content (wt%) is: Mo: 4.8; V: 4.9; Cr: 1.53; Al: 3.1; Fe: 0.11; C: 0.008; N: 0.010; : 0.10; the balance is titanium. The ingredients are pressed into electrodes. The Ф380mm ingot was obtained by melting twice in a vacuum consumable electric furnace. The billet is forged at 1000°C, forged at 900°C for 2 fires to Ф40mm, and hot rolled at 800°C to Ф11.5mm bar on the rolling mill. Aging at 580°C for 4 hours, air cooling to room temperature. A titanium alloy sample 2 was obtained.

Embodiment 3

[0020] According to the following proportions, the main alloy element content (wt%) is: Mo: 4.8; V: 4.9; Cr: 2.48; Al: 3.1; Fe: 0.11; C: 0.008; N: 0.010; H: 0.0015; : 0.10; the balance is titanium. The ingredients are pressed into electrodes. The Ф380mm ingot was obtained by melting twice in a vacuum consumable electric furnace. The billet is forged at 1050°C, forged at 950°C for 3 times to Ф40mm, and hot rolled at 850°C on the rolling mill to Ф11.5mm bar. Aging at 540°C for 4 hours, air cooling to room temperature. A titanium alloy sample 3 was obtained.

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PUM

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Abstract

The invention provides a processing technology of a titanium alloy, in particular a processing technology of a titanium alloy Ti5Mo5V2Cr3Al, which comprises the following steps: 1. forging stocks are blanked and forged on a forging machine at a temperature ranging from 780 DEG C to 1050 DEG C until the forging stocks achieve a deformation of larger than or equal to 60 percent, 2. hot rolling is carried out on the forging stocks on a rolling mill at a temperature ranging from 700 DEG C to 950 DEG C until the forging stocks achieve a rolling deformation of larger than or equal to 70 percent, 3.aging is carried out for the forging stocks for 1-8h at a temperature ranging from 480 DEG C to 580 DEG C, and air cooling is carried out until the temperature is reduced to the room temperature. Thetitanium alloy comprises the following main alloying elements by the weight percent:4.5-5.7 of Mo, 4.5-5.7 percent of V, 1.5-2.5 of Cr, 2.5-3.5 percent of Al, and the balanced titanium. The diameter of the rolled alloy bar is smaller or equal to 60 mm. With good match properties between high strength and high toughness, the titanium alloy processed by the processing technology can be used for manufacturing the landing gear of a plane and other large forgings used for an aeronautic and astronautic technology.

Description

technical field [0001] The invention relates to a processing technology of titanium alloy, in particular to a processing technology of deformation heat treatment of Ti5Mo5V2Cr3Al titanium alloy. Background technique [0002] Ti5Mo5V3Al-XCr series titanium alloy is a series of alloys independently developed by my country. Due to its high strength and high toughness, it can be widely used in the aerospace field. Among them, Ti5Mo5V2Cr3Al alloy is a near-β-type titanium alloy successfully developed on the basis of Ti5Mo5V8Cr3Al titanium alloy. Due to its light weight, high strength, high ductility, excellent impact resistance and fracture toughness, and good forging performance and machining performance, It is suitable for manufacturing aircraft landing gear and other large forgings for aerospace. [0003] The content (wt%) of the main alloying elements of the Ti5Mo5V2Cr3Al alloy is: Mo: 4.5% to 5.7%; V: 4.5% to 5.7%; Cr: 1.5% to 2.5%; Al: 2.5% to 3.5%; the balance is titanium...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P17/00B21J1/06B21J5/00B21B37/74B21B37/58C22C14/00C22F1/18
Inventor 陈海珊张翥余明崔雪飞
Owner GRIMAT ENG INST CO LTD
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