Ti-Nb-Mo-O series high-damp alloy and preparation method thereof

Abstract

The invention discloses a Ti-Nb-Mo-O series high-damp alloy. The alloy comprises the following chemical components in percentage by atom: 73.5% of Ti, 15.0%-23.0% of Nb, 2.0%-10.0% of Mo and 1.5% of O. In the high-damp alloy disclosed by the invention, two elements with stable beta phases namely Nb and Mo, and O atoms are added, thus the Ti-Nb-Mo-O series alloy belongs to a beta-phase titanium alloy. In the preparation method of the Ti-Nb-Mo-O series high-damp alloy, smelting is repeatedly carried out at least five times by adopting a vacuum arc process, and heat treatment is carried out after preparing an alloy ingot; the O atoms are solved in the beta phase in a solid mode; the stability of a beta-phase substrate (body-centered cubic structure) in the alloy is enhanced through adding Nb and Mo elements; and the alloy has high damp value, good mechanical property and the like. The high-damp alloy of the invention can be used at the temperature ranging from 200 DEG C-300 DEG C and has the characteristics of high damp value, wider effective damp temperature interval, good mechanical property and the like.

Description

technical field [0001] The invention relates to a high damping alloy applied in the mechanical field. The high-damping titanium alloy relies on the diffusion process of oxygen atoms in the β-phase structure to obtain good damping characteristics, and relies on the addition of alloying elements to ensure its mechanical properties. The alloy can be used in higher temperature environments and equipment with strict requirements on vibration and noise control, such as precision instruments, aircraft structural parts, fasteners, etc. Background technique [0002] With the rapid development of modern industry, various mechanical equipment requires higher precision and longer service life, while vibration and noise will seriously affect the service life and precision of equipment. For example, as a super-high-speed flying aircraft, a fighter jet will generate huge vibration energy when its engine runs at high speed, which will accelerate the deterioration of the performance of the ...

AI Technical Summary

Problems solved by technology

For example, as a super-high-speed flying aircraft, a fighter jet will generate huge vibration energy when its engine runs at high speed, which will accelerate the deterioration of the performance of the engine and even lead to the deterioration of the performance of other parts; the fuselage of a fighter jet has a huge vibration energy, which could cause the fuselage material to fracture, causing the fighter to disintegrate

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