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A kind of ti-zr-cu-ni-co-mo amorphous solder and preparation method thereof

A technology of ti-zr-cu-ni-co-mo and brazing filler metal, which is applied in the field of Ti-Zr-Cu-Ni-Co-Mo amorphous brazing filler metal and its preparation, can solve the problem of increasing the dissolution degree of base metal and brazing filler metal High welding temperature, difficult to meet the problems of brazing, etc., to achieve the effect of increasing wettability, high connection strength, and reducing the difficulty of brazing assembly

Active Publication Date: 2016-05-04
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although brazing TiAl alloys with the Ti-based brazing material developed above can obtain joints with higher mechanical properties, the brazing temperature is high, and it is difficult to meet the brazing of some TiAl parts that require more stringent brazing temperatures. High welding temperature is easy to form thicker intermetallic compounds and will increase the degree of corrosion of the base metal

Method used

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  • A kind of ti-zr-cu-ni-co-mo amorphous solder and preparation method thereof
  • A kind of ti-zr-cu-ni-co-mo amorphous solder and preparation method thereof
  • A kind of ti-zr-cu-ni-co-mo amorphous solder and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0031] (1) Ingredients: Ti, Zr, Cu, Ni, Co, Mo metal particles are used as raw materials, the purity of each raw material is ≥99.9%, and the content by mass percentage is Ti44.6%, Zr26.2%, Cu13. 6%, Ni12.6%, Co1.8%, Mo1.2% to prepare the charge, and remove the oxide film and impurities on the particle surface before batching, that is, use 1.5% HF-2.5% HNO 3 -5%HCl-91%H 2 O (Vol%) was first pickled, then soaked in 2mol / L NaOH solution for 5 minutes, then rinsed with absolute ethanol, dried, and finally ultrasonically cleaned in acetone for 10 minutes and then dried;

[0032] (2) Melting solder alloy: put the charge prepared in step (1) into the water-cooled copper crucible of the WS-4 non-consumable vacuum electric arc furnace, and first pump the vacuum in the furnace chamber to 4.5×10 -3 Fill Pa again with argon gas to 0.06MPa, repeat the operation for 3 times, and then use the current size of 150A tungsten arc melting for 5 times under the atmosphere of argon protection to o...

Embodiment 2

[0036] (1) Ingredients: Ti, Zr, Cu, Ni, Co, Mo metal particles are used as raw materials, the purity of each raw material is ≥99.9%, and the content by mass percentage is Ti43.7%, Zr25.65%, Cu13. 3%, Ni12.35%, Co3%, Mo2% to prepare the charge, and remove the oxide film and impurities on the particle surface before batching, that is, use 1.5% HF-2.5% HNO 3 -5%HCl-91%H 2 O (Vol%) was first pickled, then soaked in 2mol / L NaOH solution for 5 minutes, then rinsed with absolute ethanol, dried, and finally ultrasonically cleaned in acetone for 10 minutes and then dried;

[0037] (2) Melting solder alloy: put the furnace material prepared in step (1) into the water-cooled copper crucible of the WS-4 non-consumable vacuum electric arc furnace, and first pump the vacuum in the furnace chamber to 4×10 -3 Fill Pa again with argon gas to 0.055MPa, repeat the operation 4 times, and then use the current size of 140A tungsten arc melting 6 times under the atmosphere of argon protection to ob...

Embodiment 3

[0041] (1) Ingredients: Ti, Zr, Cu, Ni, Co, Mo metal particles are used as raw materials, the purity of each raw material is ≥99.9%, and the content by mass percentage is Ti42.8%, Zr25.1%, Cu13. 0%, Ni12.1%, Co4.2%, Mo2.8% to prepare the charge, and remove the oxide film and impurities on the particle surface before batching, that is, use 1.5% HF-2.5% HNO 3 -5%HCl-91%H 2 O (Vol%) was first pickled, then soaked in 2mol / L NaOH solution for 5 minutes, then rinsed with absolute ethanol, dried, and finally ultrasonically cleaned in acetone for 10 minutes and then dried;

[0042] (2) Melting solder alloy: put the furnace material prepared in step (1) into the water-cooled copper crucible of the WS-4 non-consumable vacuum electric arc furnace, and first pump the vacuum in the furnace chamber to 4×10 -3 Fill Pa again with argon to 0.065MPa, repeat the operation 5 times, and then use tungsten arc melting with a current size of 130A 6 times under the atmosphere of argon protection to o...

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Abstract

The invention belongs to the field of welding materials and discloses a Ti-Zr-Cu-Ni-Co-Mo amorphous brazing filler metal and a preparing method thereof. The brazing filler metal is formed by the following components in mass percent of 24-27% of Zr, 12-14% of Cu, 11-13% of Ni, 1.8-4.2% of Co, 1.2-2,8% of Mo and the balance of Ti. The preparing method comprises the steps of burdening according to the content of the components, then adopting a tungsten electric arc smelting method to prepare a brazing filler metal alloy ingot, crushing the alloy ingot into small particles, placing into a quartz tube for heating and melting, and preparing in a high-vacuum single-roll rotary quenching system to obtain the Ti-Zr-Cu-Ni-Co-Mo amorphous brazing filler metal by adopting a fast solidification technology. The brazing filler metal has the advantages of low melting point, short melting range, high connection strength in brazing of a TiAl joint and the like.

Description

technical field [0001] The invention belongs to the field of welding materials, and in particular relates to a Ti-Zr-Cu-Ni-Co-Mo amorphous solder and a preparation method thereof. Background technique [0002] TiAl-based intermetallic compound alloys have a low density (about 3.8g / cm 3 ), high specific strength and elastic modulus, high-temperature mechanical properties and excellent oxidation resistance, etc., it is considered to be an ideal new high-temperature structural material with broad application prospects. However, the intrinsic hard and brittle nature of TiAl alloys makes it difficult to perform room temperature plastic forming or even cutting, which limits the application range of TiAl alloys. In order to expand and deepen the application of TiAI-based alloys, it is particularly important to solve the connection problem. At present, the joining methods of TiAl alloy mainly include fusion welding, friction welding, diffusion joining and brazing. When joining Ti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/32B23K35/40
CPCB23K35/325B23K35/40
Inventor 李小强李力屈盛官杨超
Owner SOUTH CHINA UNIV OF TECH
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