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Nanoparticle reinforced ZTC4 titanium alloy and preparation method thereof

A technology of ZTC4 and nano-particles, applied in the field of titanium alloys, has achieved great national economic significance and the effect of simple and easy methods

Active Publication Date: 2021-02-09
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention strengthens the TC4 titanium alloy by adding a small amount of nano particles. This method has not been reported yet, and it is a new type of very innovative titanium alloy strengthening method.

Method used

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  • Nanoparticle reinforced ZTC4 titanium alloy and preparation method thereof
  • Nanoparticle reinforced ZTC4 titanium alloy and preparation method thereof
  • Nanoparticle reinforced ZTC4 titanium alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] This embodiment provides a kind of ZTC4 titanium alloy, and its preparation method comprises the following steps:

[0032] S1, carbon nanotubes and titanium powder with a particle size of 300 mesh are mixed according to a molar ratio of 1:1 to obtain a mixture; then, the mixture and a particle diameter of 500 mesh aluminum powder are placed in a mass ratio of 30:70 Mix in a ball mill at a speed of 50 rpm for 24 hours to obtain alloy powder.

[0033] S2. Put the above alloy powder in aluminum foil, press it into a cylindrical compact with a diameter of 25mm and a height of 35mm, then put the compact into a graphite mold, and place the graphite mold in a vacuum heating furnace at 30°C / min The heating rate is heated to 900°C for combustion synthesis, and after 10 minutes of heat preservation, it is cooled to room temperature with the furnace to obtain an aluminum-based master alloy containing nano-TiC particles, wherein the particle size of the nano-TiC particles is 60-120...

Embodiment 2

[0040] This embodiment provides a kind of ZTC4 titanium alloy, and its preparation method comprises the following steps:

[0041]S1, carbon nanotubes and titanium powder with a particle size of 300 mesh are mixed according to a molar ratio of 1:1 to obtain a mixture; then, the mixture and a particle diameter of 500 mesh aluminum powder are placed in a mass ratio of 30:70 Mix in a ball mill at a speed of 50 rpm for 24 hours to obtain alloy powder.

[0042] S2. Put the above alloy powder in aluminum foil, press it into a cylindrical compact with a diameter of 25mm and a height of 35mm, then put the compact into a graphite mold, and place the graphite mold in a vacuum heating furnace at 30°C / min The heating rate is heated to 900°C for combustion synthesis, and after 10 minutes of heat preservation, it is cooled to room temperature with the furnace to obtain an aluminum-based master alloy containing nano-TiC particles, wherein the particle size of the nano-TiC particles is 60-120n...

Embodiment 3

[0049] This embodiment provides a kind of ZTC4 titanium alloy, and its preparation method comprises the following steps:

[0050] S1, carbon nanotubes and titanium powder with a particle size of 300 mesh are mixed according to a molar ratio of 1:1 to obtain a mixture; then, the mixture and a particle diameter of 500 mesh aluminum powder are placed in a mass ratio of 30:70 Mix in a ball mill at a speed of 50 rpm for 24 hours to obtain alloy powder.

[0051] S2. Put the above alloy powder in aluminum foil, press it into a cylindrical compact with a diameter of 25mm and a height of 35mm, then put the compact into a graphite mold, and place the graphite mold in a vacuum heating furnace at 30°C / min The heating rate is heated to 900°C for combustion synthesis, and after 10 minutes of heat preservation, it is cooled to room temperature with the furnace to obtain an aluminum-based master alloy containing nano-TiC particles, wherein the particle size of the nano-TiC particles is 60-120...

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Abstract

The invention is applicable to the technical field of titanium alloys, and provides a nanoparticle reinforced ZTC4 titanium alloy and a preparation method thereof. The reinforcing nano particles are nano TiC particles and can be used for improving the strength of the ZTC4 titanium alloy. Specifically, the ZTC4 titanium alloy comprises the following components in percentage by mass: 5.5%-6.8% of Al, 3.5%-4.5% of V, 88.4%-90.99% of Ti, 0.01%-0.3% of nano TiC particles and the balance of impurity elements, wherein the sum of the mass percentages of the components is 100%. The nano TiC particles are added into the ZTC4 titanium alloy, so that the strength of the ZTC4 titanium alloy is remarkably improved unexpectedly, it can be guaranteed that the elongation of the ZTC4 titanium alloy is not greatly changed, and great significance in application of the ZTC4 titanium alloy in a high-strength environment is achieved.

Description

technical field [0001] The invention belongs to the technical field of titanium alloys, and in particular relates to a nanoparticle-reinforced ZTC4 titanium alloy and a preparation method thereof. Background technique [0002] In recent years, titanium and titanium alloys have attracted widespread attention. At present, the most widely used and most developed commercial titanium alloy is ZTC4 (Ti-6Al-4V). Commercial TC4 is widely used in the offshore marine industry due to its high specific strength and good corrosion resistance. The casting method to prepare ZTC4 titanium alloy components occupies an important position in the offshore marine field. The casting method can manufacture titanium alloy components with complex shapes and high dimensional accuracy. However, the strength of ZTC4 titanium alloy is low, which cannot meet the strength requirements of some working conditions. Some wrought TC4 titanium alloys with higher strength cannot manufacture components with c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C14/00C22C1/03C22C1/10C22F1/18C21D1/18C22C21/00
CPCC22C14/00C22C32/0052C22C1/03C22C1/1036C22C1/1094C22F1/183C21D1/18C22C21/00C22C1/1047
Inventor 姜启川赵庆龙邱丰朱云龙
Owner JILIN UNIV
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