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Titanium-nickel solder for brazing tib+tic hybrid reinforced titanium-based composite material and nickel-based alloy and its preparation and brazing method

A technology of titanium-based composite materials and nickel-based alloys, applied in welding/cutting media/materials, welding equipment, metal processing equipment, etc., can solve problems such as stress concentration at the joint interface, high welding pressure, and complicated friction welding processes. Achieve the effects of small heat input, high welding efficiency, and high promotion and application value

Active Publication Date: 2021-08-13
XINYU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent CN201310150024.0 "a composite solder and its preparation method and a method for brazing TiBw / TC4 titanium-based composite materials using the composite solder" is prepared by uniformly coating TiB2 particles on TiZrCuNi amorphous foil with a binder. Composite solder, and then brazing TiBw / TC4 titanium-based composite material; Chinese patent CN201610092721.9 "A method of connecting Ti60 and TiBw / TC4 using TiZrNiCu+B composite solder" is brazing with TiZrNiCu+B powdered solder Titanium alloy Ti60 and TiBw / TC4 composite materials; compared with the present application, the above-mentioned patents or documents use mainly amorphous TiZrNiCu solder, the preparation process is complicated, and the cost is higher
However, the friction welding process is complex and the welding pressure is relatively high, which requires high equipment
[0007] In summary, the above welding process can successfully weld ceramic reinforced titanium matrix composites, but due to the characteristics of welding processes such as fusion welding, diffusion welding and friction welding, such as fusion welding, it is easy to cause the ceramic reinforcement phase in the composite material to gather at the interface, resulting in The stress concentration at the joint interface and the high welding pressure required for diffusion welding have become the main factors that limit the application of this method

Method used

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  • Titanium-nickel solder for brazing tib+tic hybrid reinforced titanium-based composite material and nickel-based alloy and its preparation and brazing method
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  • Titanium-nickel solder for brazing tib+tic hybrid reinforced titanium-based composite material and nickel-based alloy and its preparation and brazing method

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Experimental program
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Effect test

Embodiment 1

[0037] A titanium-nickel solder for brazing TiB+TiC hybrid reinforced titanium-based composite material and nickel-based alloy, wherein the titanium-nickel solder is composed of 71 atomic percent Ti and 29 atomic percent Ni.

[0038] The preparation method of the titanium-nickel solder of the present invention for brazing TiB+TiC hybrid reinforced titanium-based composite material and nickel-based alloy comprises the following steps:

[0039] S1. Mix powdery metal Ti and Ni with a purity greater than 99.5%, and place them on a roller ball mill for ball milling. The ball milling medium is alcohol, the balls are agate balls, the ball-to-material ratio is 5:1, and the milling speed is 90r / min , the ball milling time is 24h, and the uniformly mixed titanium-nickel metal powder is obtained;

[0040] S2. Put the ball-milled metal powder in S1 into a crucible, dry it in a vacuum oven at 80°C, and pass it through a 100-mesh sieve;

[0041] S3. Weigh 20g of sieved titanium-nickel meta...

Embodiment 2

[0048] A titanium-nickel solder for brazing TiB+TiC hybrid reinforced titanium-based composite material and nickel-based alloy, wherein the titanium-nickel solder is composed of 68 atomic percent Ti and 32 atomic percent Ni.

[0049] The preparation method of the titanium-nickel solder of the present invention for brazing TiB+TiC hybrid reinforced titanium-based composite material and nickel-based alloy comprises the following steps:

[0050] S1. Mix powdery metal Ti and Ni with a purity greater than 99.5%, and place them on a roller ball mill for ball milling. The ball milling medium is alcohol, the balls are agate balls, the ball-to-material ratio is 5:1, and the milling speed is 90r / min , the ball milling time is 16h, and the uniformly mixed titanium-nickel metal powder is obtained;

[0051] S2. Put the ball-milled metal powder in S1 into a crucible, dry it in a vacuum oven at 80°C, and pass it through a 100-mesh sieve;

[0052] S3. Weigh 20g of sieved titanium-nickel meta...

Embodiment 3

[0059] A titanium-nickel solder for brazing TiB+TiC hybrid reinforced titanium-based composite material and nickel-based alloy, wherein the titanium-nickel solder is composed of 66 atomic percent Ti and 34 atomic percent Ni.

[0060] The preparation method of the titanium-nickel solder of the present invention for brazing TiB+TiC hybrid reinforced titanium-based composite material and nickel-based alloy comprises the following steps:

[0061] S1. Mix powdery metal Ti and Ni with a purity greater than 99.5%, and place them on a roller ball mill for ball milling. The ball milling medium is alcohol, the balls are agate balls, the ball-to-material ratio is 5:1, and the milling speed is 90r / min , the ball milling time is 12h, and the uniformly mixed titanium-nickel metal powder is obtained;

[0062] S2. Put the ball-milled metal powder in S1 into a crucible, dry it in a vacuum oven at 80°C, and pass it through a 100-mesh sieve;

[0063] S3. Weigh 20g of sieved titanium-nickel meta...

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Abstract

The invention discloses a titanium-nickel solder for brazing TiB+TiC hybrid reinforced titanium-based composite material and nickel-based alloy and a preparation and brazing method. The titanium-nickel solder is mainly composed of Ti and atomic percentage of 64-71%. The percentage is 29-36% Ni; the main steps of titanium-nickel solder preparation and brazing include ball milling of metal powder, pressure forming, induction melting, and brazing TiB+TiC hybrid reinforced titanium base with the obtained titanium-nickel solder Composite materials and nickel-based alloys. The titanium-nickel brazing material used in the invention has low cost and simple manufacturing method, and can obtain TiB+TiC hybrid reinforced titanium-based composite material and nickel-based alloy brazed joint with good performance, and has good popularization value.

Description

technical field [0001] The invention relates to the technical field of brazing, in particular to a titanium-nickel solder for brazing TiB+TiC hybrid reinforced titanium-based composite material and nickel-based alloy, and a preparation and brazing method. Background technique [0002] Ceramic-reinforced titanium-based composites have the dual characteristics of ceramics and metals, have high specific strength, specific stiffness, and good high temperature and corrosion resistance, and have broad application prospects in aerospace and other fields. At present, a lot of research has been carried out on the molding, preparation process, and mechanical properties of ceramic-reinforced titanium-based composite materials, and significant scientific research results have been achieved. Among them, for the reinforcement phase, TiB and TiC have excellent thermodynamic stability and a thermal expansion coefficient very similar to that of the titanium matrix (such as TC4 (Ti6-Al4-V) = ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/32B23K1/008B23K1/20
CPCB23K1/008B23K1/20B23K1/206B23K35/0233B23K35/325
Inventor 刘桂武徐顺建陈枭严智敏简辉华
Owner XINYU UNIV