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Five-element intermediate alloy used for preparing titanium alloy

An intermediate alloy and titanium alloy technology, applied in the field of alloys, can solve the problems of insufficient melting of high-melting-point and high-density elements, reducing the use effect, increasing the melting point and composition inhomogeneity of binary intermediate alloys, and avoiding melting current. Instability, improve stability, ensure the effect of composition uniformity

Active Publication Date: 2014-03-12
宝武特冶钛金科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be known from the basic knowledge of the phase diagram that this will significantly increase the melting point and compositional inhomogeneity of binary master alloys such as Al-Mo, Al-V, Al-Nb, etc. For example, the Al-Mo phase diagram shows that the melting point of 15A1-85Mo binary alloy (2480°C)

Method used

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  • Five-element intermediate alloy used for preparing titanium alloy
  • Five-element intermediate alloy used for preparing titanium alloy
  • Five-element intermediate alloy used for preparing titanium alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] Table 1 lists the proportions of the chemical elements in Examples 1-3 of this technical solution.

[0024] Table 1. (wt%, the balance is impurities)

[0025]

Mo

V

Cr

Fe

Al

Example 1

27

27

15.5

1.8

28.5

Example 2

25.5

24.2

21.2

1.9

27.2

Example 3

27.3

26.8

14.7

2.1

29

Example 4

28.2

28.2

12.8

1.5

29.2

Example 5

23.6

32.4

15.3

2.1

26.5

Example 6

32.7

23.8

14.9

1.8

26.8

[0026] Ti-5.2A1-5.1Mo-5.1V-3.0Cr-0.35Fe-0.16O titanium alloy (denoted as titanium alloy A in Table 2) was prepared using the five-element master alloy (particles of 0.5-2mm) described in Example 1 ), the microstructure of the titanium alloy after forging and heat treatment is as image 3 As shown, its mechanical properties are shown in Table 2. The titanium alloy is suitable for the manufacture of high-strength aviation fasteners.

[0027] The five-element master alloy (particle size 0.5-2mm) described in Example 2 was used to p...

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Abstract

The invention discloses a five-element intermediate alloy used for preparing titanium alloy. Mass percentage of each chemical element is as follows: 23-33% of Mo, 23-33% of V, 12-22% of Cr, 1.5-2.5% of Fe, and the balance being Al and other inevitable impurities. Uniformly alloying and low cost can be realized by adopting the five-element intermediate alloy to prepare multi-element and high-content titanium alloy.

Description

Technical field [0001] The invention relates to an alloy, in particular to an intermediate alloy for preparing titanium alloy. Background technique [0002] With the development of science and technology, titanium alloys are in increasing demand in various industrial production fields, such as the aviation industry. In order to meet the requirements of the aviation industry for weight reduction, corrosion protection, durability and low cost of structural materials, the titanium alloys used in the aviation industry tend to have high strength, high toughness, and high hardenability, and the constituent elements of titanium alloys also tend to Diversified and high-content development. [0003] Since the main alloying elements of titanium alloys generally contain high melting point elements such as Mo, V, Cr, Nb, if these elements are added in the form of simple metal, because of their different melting points, the melting rate of the raw materials in the electrode block during smelti...

Claims

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Application Information

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IPC IPC(8): C22C1/03C22C14/00
Inventor 徐锋杨昭王宁闵新华计波
Owner 宝武特冶钛金科技有限公司