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Zr alloying Ti-8Si alloy and preparing method thereof

An alloying and alloying technology, applied in the field of materials, can solve the problem that the overall performance of the titanium-silicon alloy cannot meet the requirements of use, and achieve the effects of easy realization, excellent economy, oxidation resistance and friction and wear performance improvement.

Active Publication Date: 2016-12-21
JIANGSU UNIV
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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the overall performance of the existing titanium-silicon alloy cannot meet the requirements of use, and to invent a titanium-silicon alloy preparation method of "high-energy ball milling-molding molding-vacuum pressureless sintering", and by adding the metal element Zr, Preparation of a titanium alloy material with good comprehensive performance and high content of titanium silicon compound

Method used

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  • Zr alloying Ti-8Si alloy and preparing method thereof
  • Zr alloying Ti-8Si alloy and preparing method thereof
  • Zr alloying Ti-8Si alloy and preparing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Such as figure 1 , 2 , 5, and 6.

[0035] A Zr alloyed Ti-8Si alloy Ti-8Si-0.7Zr, which is prepared by the following steps:

[0036] First, prepare 30g of Ti, Si, Zr elemental mixed powder, wherein Ti powder 91.3wt.% (27.39g), Si powder 8wt.% (2.4g), Zr powder 0.7wt.% (0.21g), the mixed powder Place in a beaker and stir well;

[0037] Secondly, first weigh 240g of agate balls and place them in a 500ml nylon ball mill jar according to the ball-to-material ratio of 8:1, then place the weighed and evenly mixed mixed powder in a nylon ball mill jar, and seal it with a cover;

[0038] Then, install the ball milling jar on the planetary ball mill, start ball milling, the ball milling parameter is set to 300r / min, stop 15min every 1h of ball milling, after ball milling for 48h, take out the powder in the ball milling jar;

[0039] Further, pass the mixed powder taken out through a 300-mesh sieve to obtain a powder with uniform particle size, and place it in a vacuum drying...

Embodiment 2

[0045] Such as figure 1, 3 , 5, and 7.

[0046] A Zr alloyed Ti-8Si alloy Ti-8Si-1.4Zr, its preparation method is basically the same as that of Example 1, except that the mass fraction of Zr powder is increased to 1.4wt from 0.7wt.% (0.21g) .% (0.42g), correspondingly, the mass fraction of Ti powder decreased from 91.3wt.% (27.39g) to 90.6wt.% (27.18g).

[0047] The mechanical alloying phenomenon of Ti-8Si-0.7Zr mixed powder prepared by the above steps is obvious, image 3 It is the XRD diffraction pattern of the Ti-8Si-1.4Zr powder obtained after high-energy ball milling in this example. After analysis, except for the detection of Ti 5 Si 4 , TiSi and TiSi 2 The formation of three titanium silicon compounds, and Ti 2 Zr, and Zr 3 Si 2 and other compounds; Figure 7 It is the XRD diffraction pattern of the Ti-8Si-1.4Zr alloy obtained after vacuum pressureless sintering. 5 Si 4 、TiSi 2 、Ti 2 Zr or Zr 3 Si 2 In addition to the phase of matter, there is also a new ...

Embodiment 3

[0049] Such as figure 1 , 4 , 5, and 8.

[0050] A kind of Zr alloyed Ti-8Si alloy Ti-8Si-2.8Zr, its preparation method is basically the same as embodiment one, the difference is that the mass fraction of Zr powder is increased to 2.8wt by 0.7wt.% (0.21g) .% (0.84g), correspondingly, the mass fraction of Ti powder decreased from 91.3wt.% (27.39g) to 89.2wt.% (26.76g).

[0051] The mechanical alloying phenomenon of Ti-8Si-2.8Zr mixed powder prepared by the above steps is obvious, Figure 4 It is the XRD diffraction pattern of the Ti-8Si-1.4Zr powder obtained after high-energy ball milling in this example. After analysis, except for the detection of Ti 5 Si 4 , TiSi and TiSi 2 The formation of three titanium silicon compounds, and Ti 2 Zr, and Zr 3 Si 2 and other compounds; Figure 8 It is the XRD diffraction pattern of the Ti-8Si-1.4Zr alloy obtained after vacuum pressureless sintering. 5 Si 4 、TiSi 2 、Ti 2 Zr or Zr 3 Si 2 In addition to the phase of matter, ther...

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Abstract

The invention relates to a Zr alloying Ti-8Si alloy and a preparing method thereof. The Zr alloying Ti-8Si alloy is characterized in that preparation raw materials comprise Ti powder, Si powder and Zr powder. The preparing method includes the steps that firstly, the Ti powder, the Si powder and the Zr powder are evenly mixed to be subject to high energy ball milling, and partial alloying is carried out on the raw materials; secondly, powder obtained after ball milling is screened and dried; thirdly, the dried powder is prepared into press cakes through compression molding forming; and finally, vacuum pressureless sintering is carried out so that sufficient alloying can be achieved. According to the Zr alloying Ti-8Si alloy and the preparing method, the Ti-8Si-xZr alloy face is uniform in component, the compactness, the inoxidizability, the abrasive resistance and the like are improved to a certain degree, and the Zr alloying Ti-8Si alloy and the preparing method have a wide application prospect in the fields of aerospace, traffic and weaponry.

Description

technical field [0001] The present invention relates to a kind of material technology, especially a kind of Zr alloyed Ti-8Si alloy, specifically, a kind of Zr alloyed Ti-8Si alloy which can improve compactness, oxidation resistance and friction and wear performance and its Preparation. Background technique [0002] Because titanium alloys have beneficial properties such as high specific strength, high specific stiffness, and corrosion resistance, in the next few decades, my country's large aircraft engineering, ships and future marine development, high-performance engines, new fighters, manned spaceflight projects, There is an increasing demand for titanium alloys in fields such as lunar exploration projects, aviation, supersonic cruise missiles, sea exploration projects, a new generation of armed helicopters, national economic industries, and medical devices that improve people's quality of life. Aerospace is one of the fields with the largest consumption of titanium alloy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C14/00C22C1/04B22F9/04
CPCB22F9/04B22F2009/041B22F2998/10B22F2999/00C22C1/0458C22C14/00B22F3/02B22F3/1017B22F2201/20
Inventor 许晓静吴刘军刘庆辉仲奕颖陈婷卓韩天戈晓岚
Owner JIANGSU UNIV
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