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Ti-Zr-Cu-Co-M alloy brazing filler metal and preparing method thereof

An alloy solder, ti-zr-cu-co-m technology, applied in the field of titanium alloy materials, can solve the problems of reducing the performance of brazed joints, achieve the effects of improving mechanical properties, reducing precipitation, and avoiding damage

Inactive Publication Date: 2018-03-20
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in order to ensure the performance of α+β titanium alloys, the corresponding brazing temperature must be lower than its β transformation temperature. Cu, Ni and Ti can form eutectics with low melting points, so they are more used as the main demelting elements. When added to titanium-based alloy solder, it is easy to form brittle compound phases such as Ti-Cu and Ti-Ni after brazing, which will reduce the performance of brazed joints

Method used

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  • Ti-Zr-Cu-Co-M alloy brazing filler metal and preparing method thereof
  • Ti-Zr-Cu-Co-M alloy brazing filler metal and preparing method thereof
  • Ti-Zr-Cu-Co-M alloy brazing filler metal and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] The target composition is: 37.92wt% Ti, 43.35wt% Zr, 6.04wt% Cu, 10.27wt% Co and 2.42wt% V. Namely Ti 50 Zr 30 Cu 6 co 11 V 3 . (atomic percent);

[0060] Preparation of Ti 50 Zr 30 Cu 6 co 11 V 3 The steps of alloy solder are:

[0061] Step 1: Weigh the simple substances of each element

[0062] According to the target solder composition Ti 50 Zr 30 Cu 6 co 11 V 3 Weigh the corresponding quality metal elemental raw materials, Ti, Zr, Cu, Co and V;

[0063] Step 2, smelting to prepare master alloy

[0064] Put the Ti, Zr, Cu, Co, V metal elemental raw materials weighed in step 1 into the vacuum arc melting equipment, and evacuate to 8×10 -3 Pa, filled with high-purity argon as a protective gas, the pressure in the furnace is 0.05MPa; the arc heating method is used to smelt repeatedly at least 4 times to ensure that the composition of the master alloy is uniform, the melting current is 180A, and the master alloy is taken out after the alloy is cooled w...

Embodiment 2

[0082] The target composition is: 29.92wt% Ti, 54.28wt% Zr, 1.89wt% Cu, 13.15wt% Co and 0.76wt% V. Namely Ti 42 Zr 40 Cu 15 co 2 V 1 . (atomic percent);

[0083] Preparation of Ti 42 Zr 40 Cu 15 co 2 V 1 The steps of alloy solder are:

[0084] Step 1: Weigh the simple substances of each element

[0085] According to the target solder composition Ti 42 Zr 40 Cu 15 co 2 V 1 Weigh the corresponding quality metal elemental raw materials, Ti, Zr, Cu, Co and V;

[0086] Step 2, smelting to prepare master alloy

[0087] Put the Ti, Zr, Cu, Co, V metal elemental raw materials weighed in step 1 into the vacuum arc melting equipment, and evacuate to 8×10 -3 Pa, filled with high-purity argon as a protective gas, the pressure in the furnace is 0.05MPa; the arc heating method is used to repeatedly smelt at least 4 times to ensure that the composition of the master alloy is uniform, and the melting current is 150A. After the alloy is cooled with the furnace, the master al...

Embodiment 3

[0100] The target composition is: 34.92wt% Ti, 41.95wt% Zr, 9.07wt% Cu, 8.41wt% Co and 5.65wt% V. Namely Ti 46 Zr 29 Cu 9 co 9 V 7 . (atomic percent);

[0101] Preparation of Ti 46 Zr 29 Cu 9 co 9 V 7 The steps of alloy solder are:

[0102] Step 1: Weigh the simple substances of each element

[0103] According to the target solder composition Ti 46 Zr 29 Cu 9 co 9 V 7 Weigh the corresponding quality metal elemental raw materials, Ti, Zr, Cu, Co and V;

[0104] Step 2, smelting to prepare master alloy

[0105] Put the Ti, Zr, Cu, Co, V metal elemental raw materials weighed in step 1 into the vacuum arc melting equipment, and evacuate to 8×10 -3 Pa, filled with high-purity argon as a protective gas, the pressure in the furnace is 0.05MPa; the arc heating method is used to repeatedly smelt at least 4 times to ensure that the composition of the master alloy is uniform, and the melting current is 150A. After the alloy is cooled with the furnace, the master alloy ...

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Abstract

The invention discloses a Ti-Zr-Cu-Co-M alloy brazing filler metal and a preparing method thereof. Components of the brazing filler metal comprise 15-55 parts of Zr, 1-20 parts of Cu, 1-20 parts of Coand 0.01-15 parts of M and the balance of Ti. M is the main group or transition metal element, and preferably M is V, Al and / or Sn element. A continuous alloy brazing filler metal thin belt with better tenacity and the thickness being 20-60 mu m is prepared by a melt spin-quenching method. The brazing filler metal according to the invention is applied to soldering of titanium alloy, the shearingstrength of a soldered joint is 200-600MPa, wherein the shearing strength of the TC4 alloy soldered joint is as high as 547 MPa. Compared with the existing titanium base brazing filler metals and titanium-zirconium base brazing filler metals, the Ti-Zr-Cu-Co-M high-performance alloy brazing filler metal involved in the invention has the advantages of low melting point, good soldered joint performances, high reliability, wide applicable range and the like.

Description

technical field [0001] The invention belongs to the field of titanium alloy materials, and specifically discloses a Ti-Zr-Cu-Co-M alloy solder and a preparation method thereof. Background technique [0002] Brazing, as an important material precision joining method, has obvious advantages compared with other welding methods. As a lightweight material, titanium alloy is widely used in the aerospace field because of its excellent comprehensive properties. For titanium alloy components with complex structures, most of them need to be connected by brazing, and in brazing titanium alloys, titanium-based alloy filler metals are used as brazing joints due to their high strength, high activity and good corrosion resistance. Solder material of choice. However, in order to ensure the performance of α+β titanium alloys, the corresponding brazing temperature must be lower than its β transformation temperature. Cu, Ni and Ti can form eutectics with low melting points, so they are more ...

Claims

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Application Information

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IPC IPC(8): C22C45/10B23K35/40B23K35/32B23K35/02
CPCC22C45/10B23K35/0227B23K35/32B23K35/40C22C2200/02C22C2200/04C22C1/11
Inventor 逄淑杰张涛刘敏茜
Owner BEIHANG UNIV
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