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A kind of high-strength high elastic modulus titanium alloy and preparation method thereof

A titanium alloy, high-elasticity technology, applied in the field of titanium alloy materials and their preparation, can solve the problem of not specifying the technical parameters of the titanium alloy preparation process in detail, and achieve the effects of easy realization, strong repeatability and simple operation

Active Publication Date: 2020-02-21
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this invention only outlines the elemental composition of the titanium alloy, and does not detail the preparation process of the titanium alloy and related process parameters

Method used

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  • A kind of high-strength high elastic modulus titanium alloy and preparation method thereof
  • A kind of high-strength high elastic modulus titanium alloy and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0026] First, with Mo, Al, V, Zr and Ti elements as raw materials, prepare 100g of mixed powder, including Mo powder 6wt.%, Al powder 5.5wt.%, V powder 3wt.%, Zr powder 2wt.%, Ti powder 83.5wt.%, that is, weigh 6.0g of Mo powder, 5.5g of Al powder, 3.0g of V powder, 2.0g of Zr powder, and 83.5g of Ti powder; mix the powders, and carry out mechanical high-energy ball milling of the mixed powders under the protection of argon, The mixed powder after ball milling is mixed evenly, the ball-to-material ratio is 5:1, the powder is mixed for 1 hour in the forward and reverse mode before ball milling, and the speed is 200r / min; the speed of ball milling is 350-450r / min, the ball milling time is 24h, and Every 45 minutes of ball milling, stop for 10 minutes; the final powder size is not more than 200nm; the mixed powder obtained after ball milling is compacted into a compact of φ100×30, the compact is a round block, the pressing working pressure is 450-500MPa, and the pressing holding t...

Embodiment 2

[0031] First, Mo, Al, V, Zr and Ti elements are used as raw materials, Mo powder 4.5wt.%, Al powder 5.0wt.%, V powder 3wt.%, Zr powder 2wt.%, Ti powder 83.5wt.%. Weigh 4.5g of Mo powder, 5.0g of Al powder, 3.0g of V powder, 2.0g of Zr powder, and 85.5g of Ti powder to prepare 100g of mixed powder. The mixed powder is subjected to mechanical high-energy ball milling under the protection of argon, so that the mixed powder after ball milling is evenly mixed, the ball-to-material ratio is 5:1, and the powder is mixed in the forward and reverse way for 1 hour before ball milling, and the rotation speed is 200r / min; During ball milling, the rotation speed is 350-450r / min, the ball milling time is 24 hours, and every 45 minutes of ball milling is stopped for 10 minutes; the final powder size is not greater than 200nm. The mixed powder obtained after ball milling is pressed into a briquette of φ100×30, and the briquette is a round block, the pressing pressure is 450-500MPa, and the pr...

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Abstract

The invention provides a titanium alloy with high strength and high elasticity modulus, and a preparation method thereof. The titanium alloy is prepared from the components in percentage by mass: 4.5percent to 6 percent of Mo, 5.0 percent to 5.5.0 percent of Al, 2 percent to 3.5 percent of V, 1.5 percent to 2.5 percent of Zr, and the balance Ti. The preparation method comprises the steps of uniformly mixing raw material powder, mechanically high-energy ball milling, and after compression moulding ball-milled mixed powder, vacuum hot-pressing and sintering; then carrying out homogenization treatment and forging; and finally carrying out solid solution and aging treatment on the forged blank. The titanium-based alloy prepared by the invention is good in compactness, the microstructure uniformity, the strength, the toughness and the elasticity modulus are improved to a certain degree, and the demands on materials with high strength and high elasticity modulus in the aerospace applicationfield are well met.

Description

technical field [0001] The invention belongs to the technical field of materials and material preparation, and provides a titanium alloy material and a preparation method thereof. Background technique [0002] Because titanium alloy has high specific strength, good corrosion resistance, good plasticity and impact toughness and other excellent properties, it is widely used in the manufacture of aero-engines, compressors and other blisks and blades. Under complex working conditions such as high temperature, high pressure, and alternating loads, higher and higher requirements are put forward for the comprehensive performance of aerospace materials. As one of the main components of an aero-engine, the reliability of the engine blade is directly related to the reliability of the entire engine. The blades are subject to the combined effects of centrifugal force and air excitation force for a long time, and are prone to violent vibrations under the service environment and external...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C14/00C22C1/04C22F1/18
CPCC22C1/0458C22C14/00C22F1/183
Inventor 李京周建忠冯爱新冯旭孟宪凯孙云辉孙奇
Owner JIANGSU UNIV