A kind of mechanical alloying preparation method of tial powder

A mechanical alloying and alloying technology, applied in the field of material processing, can solve the problems of small production output, uneven particle size distribution of powder, expensive equipment, etc., to optimize the alloying effect, improve the uniformity of components, and inhibit oxidation. effect of the phenomenon

Inactive Publication Date: 2018-04-13
QINGDAO R & D INST XIAN JIAOTONG UNIV +1
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Problems solved by technology

[0003] At present, the main preparation methods of powder used in 3D printing are atomization method, chemical reduction method and mechanical alloying, etc. Among them, the process involved in atomization method is complicated, the equipment is expensive, and the components prepared by chemical reduction method are uniform, but the production capacity It is small and will produce chemical reagent wastewater at the same time. The main advantages of the mechanical alloying method are that the equipment is cheap and the processing method is simple. large-scale applications

Method used

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Embodiment Construction

[0019] The present invention will be further described below in combination with specific embodiments.

[0020] The mechanical alloying preparation method of TiAl powder comprises the following steps,

[0021] The selected alloy components include Al: 39-40%, Cr: 1.2-1.5-%, Nb: 1.6-1.8%, Si: 0.05-0.11%, Mo: 0.2-0.3%, V: 2.2- 2.8%, B: 0.03-0.04%, La: 0.02-0.04%, and the balance is Ti.

[0022] The element powder corresponding to the above components is selected according to the above atomic percentage. The particle size of the powder is 50-80 microns, and then it is added to the ethylene glycol solvent to obtain a mixture. The quality of the ethylene glycol solvent is 3% of the total mass of the element powder. -5 times, followed by ultrasonic vibration stirring, stirring for 3-5min and then heating and concentrating the above-mentioned solvent under the condition of continuing stirring, and concentrating ethylene glycol to 1-2 times the total mass of the element powder. When...

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Abstract

The preparation method of mechanical alloying includes selecting suitable powder, adding it to ethylene glycol for stirring, adding it to a high-energy planetary ball mill after concentration, using balls of different sizes for ball milling, glucose as an antioxidant, and performing ball milling at variable angles. The present invention suppresses the The oxidation phenomenon in the alloying process improves the composition uniformity of the alloying process.

Description

technical field [0001] The invention belongs to the technical field of material processing, and in particular relates to a mechanical alloying preparation method of TiAl powder. Background technique [0002] Titanium-aluminum intermetallic compounds have low density, high strength, high hardness, high temperature resistance, high corrosion resistance and friction resistance, especially TiAl intermetallic compounds because of their high specific strength, high specific stiffness, corrosion resistance and wear resistance. , high temperature resistance and excellent oxidation resistance, etc., are becoming one of the excellent candidate structural materials in the contemporary aerospace industry, civil industry and other fields, especially in the field of aeroengine blades, which have broad application prospects. 3D printing, or additive manufacturing, is a rapid prototyping process that has emerged in recent years. It adopts layer-by-layer powder coating, laser or electron bea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C14/00B22F9/04B22F1/00C22C1/04
CPCB22F1/0003C22C1/0458C22C14/00B22F9/04B22F2009/041B22F2009/042C22C1/047
Inventor 余钊辉张建勋王茜
Owner QINGDAO R & D INST XIAN JIAOTONG UNIV
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