Unlock instant, AI-driven research and patent intelligence for your innovation.

Ti5Mo5V4Cr3Al titanium alloy and technique for processing the same

A processing technology, titanium alloy technology, applied in the field of titanium alloy and its processing technology, can solve problems affecting forging performance and machinability, and achieve high aging strength, machinability, and high aging strength

Inactive Publication Date: 2009-06-24
GENERAL RESEARCH INSTITUTE FOR NONFERROUS METALS BEIJNG
View PDF0 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to its high resistance at forging temperature, it affects its forging performance and machinability

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Ti5Mo5V4Cr3Al titanium alloy and technique for processing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The gold material is mixed according to the following proportions, and the main alloy element content (wt%) is: Al: 6.0; V: 4.0; Fe: 0.11; C: 0.009; N: 0.01; H: 0.0015; O: 0.10; The ingredients are pressed into electrodes. Ingots are obtained by smelting three times in a vacuum consumable electric furnace. The billet was forged at 1100°C, forged at 900°C to form a Φ20mm rod, kept at 750°C for 2 hours, and then air-cooled to room temperature to obtain sample 1, whose structural formula is Ti6Al4V.

[0024] According to the following proportions, the main alloying element content (wt%) is: Mo:4.8; V:4.9; Cr:4.0; Al:3.1; Fe:0.11; C:0.008; N:0.010; H:0.0015; O :0.10; the balance is titanium. The ingredients are pressed into electrodes. Ingots are obtained by melting twice in a vacuum consumable electric furnace. The billet was forged at 1100°C, forged at 900°C to form a Φ20mm rod, aged at 540°C for 5 hours, and sample 2 was obtained.

[0025] Change the content of chro...

Embodiment 2

[0026] Example 2 Mechanical property experiment of titanium alloy

[0027] Samples 1-5 were processed into conventional tensile specimens of Φ5mm. AG50KNE ​​testing machine was used to test the mechanical properties of each sample. The test was carried out on the AG50KNE ​​testing machine after being heated to 850°C and 900°C by the heater and kept warm for 15 minutes. The mechanical properties of titanium alloy are shown in Table 1.

[0028] Table 1

[0029]

[0030] It can be seen from the results in Table 1 that sample 2 (Ti5Mo5V2Cr3Al titanium alloy) has the lowest high-temperature strength under the usual processing temperature of 850-900 °C, indicating that it has the smallest hot-working deformation resistance at this temperature. The processing performance is the best. With the increase of chromium content, the high temperature strength gradually increases, and the deformation resistance increases, resulting in the gradual deterioration of the hot processing perf...

Embodiment 3

[0032] According to the following proportions, the main alloying element content (wt%) is: Mo:4.8; V:4.9; Cr:4.0; Al:3.1; Fe:0.11; C:0.008; N:0.010; H:0.0015; O :0.10; the balance is titanium. The ingredients are pressed into electrodes. Ingots are obtained by melting twice in a vacuum consumable electric furnace. The billet was forged at 1000°C, forged at 850°C to form a Φ20mm rod, aged at 540°C for 4 hours, and sample 6 was obtained.

[0033] The content of chromium in the alloy was changed to 2.0%, 6.0%, and 8.0%, respectively, and the same procedure as that of sample 6 was used to prepare comparative samples 1-3.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
yield strengthaaaaaaaaaa
tensile strengthaaaaaaaaaa
tensile strengthaaaaaaaaaa
Login to View More

Abstract

The invention provides a new titanium alloy and a processing technique thereof. In particular, the invention provides the titanium alloy with the general formula Ti5Mo5V4Cr3Al. The main alloying elements of the titanium alloy are according to the contents (wt%): 4.5-5.7% of Mo, 4.5-5.7% of V, 3.5-4.5 % of Cr, 2.5-3.5% of Al, and the rest is titanium. As the titanium alloy has higher tensile intensity, toughness and good hot-working characteristics, the titanium alloy can be applied to the heavy forging, the high pressure vessel and the like used in the Aero-space.

Description

technical field [0001] The invention relates to a novel titanium alloy, in particular to a titanium alloy with a general formula of Ti5Mo5V4Cr3Al and a processing technology thereof. Background technique [0002] Ti-Mo-V-Al-Cr series titanium alloys are widely used in the aerospace field due to their high strength and high toughness. Among them, the Ti5Mo5V8Cr3Al titanium alloy developed by my country is a metastable β titanium alloy. The main alloying element content (wt%) of the Ti5Mo5V8Cr3Al alloy is: Mo: 4.5% to 5.7%; V: 4.5% to 5.7%; Cr: 7.5% to 8.5%; Al: 2.5% to 3.5%; the balance is titanium, which has been used in aviation and aerospace industries because of its good strength, toughness and light weight. However, due to its high resistance at forging temperature, it affects its forging performance and machinability. In addition, higher strength titanium alloy materials are still required to meet the needs of the aerospace industry. Contents of the invention [000...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C22C14/00C22C1/02
Inventor 余明陈海珊崔雪飞魏衍广陶海明
Owner GENERAL RESEARCH INSTITUTE FOR NONFERROUS METALS BEIJNG