High damping titan alloy of multicomponent alloy

A multi-element alloy and high damping technology, applied in the field of titanium alloy, can solve the problems of poor corrosion resistance and achieve the effect of easy implementation

Active Publication Date: 2009-01-07
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Typical dislocation damping alloys include Mg, Mg-Si and Mg-Zr alloys, and the damping performance is generally about 40% to 60% of the specific damping coefficient SDC, but the disadvantage of this type of alloy is that the corrosion resistance is relatively poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] In this embodiment, sponge titanium, electrolytic nickel, oxygen-free copper, metal zirconium and a small amount of rare earth yttrium (Y) are used to press into an electrode according to the design composition, and the electrode is smelted into a multi-element alloy high damping titanium with a conventional vacuum induction melting furnace alloy. The composition of the high damping titanium alloy is Ni: 25%, Cu: 25%, Zr: 1%, Y: 0.1%, and the balance is Ti and unavoidable impurities. After the alloy is smelted, a single casting or a combination of single casting and wire cutting is used to obtain the shock absorbing parts of the required size and specification. The damping performance is: tanΦ=0.21; the compressive yield strength at room temperature σ s =2510 MPa.

Embodiment 2

[0013] In this embodiment, sponge titanium, electrolytic nickel, oxygen-free copper, metal zirconium and a small amount of rare earth yttrium are pressed into electrodes according to the design composition, and the electrodes are smelted into a multi-element high-damping titanium alloy by conventional vacuum induction melting furnace. The composition of the high damping titanium alloy is Ni: 25%, Cu: 25%, Zr: 2%, Y: 0.1%, and the balance is Ti and unavoidable impurities. After the alloy is smelted, a single casting or a combination of single casting and wire cutting is used to obtain the shock absorbing parts of the required size and specification. The damping performance is: tanΦ=0.24; the compressive yield strength at room temperature σ s =2810MPa.

Embodiment 3

[0015] In this embodiment, sponge titanium, electrolytic nickel, oxygen-free copper, metal zirconium and a small amount of rare earth yttrium are pressed into electrodes according to the design composition, and the electrodes are smelted into a multi-element high-damping titanium alloy by conventional vacuum induction melting furnace. The composition of the high damping titanium alloy is Ni: 25%, Cu: 25%, Zr: 4%, Y: 0.1%, and the balance is Ti and unavoidable impurities. After the alloy is smelted, a single casting or a combination of single casting and wire cutting is used to obtain the shock absorbing parts of the required size and specification. The damping performance is: tanΦ=0.19; the compressive yield strength at room temperature σ s =2320MPa.

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Abstract

The invention discloses a high damping titanium alloy of a multi-element alloy. The alloy is manufactured into an electrode by adopting sponge titanium, electrolytic nickel, oxygen-free copper, metal zirconium and less rare earth yttrium in a pressing way according to the designed components. The electrode is melted into the high damping titanium alloy of a multi-element alloy by a normal vacuum induction furnace; the components of the high damping titanium alloy include: 25 to 30 percent of Ni; 25 to 30 percent of Cu; 1 to 5 percent of Zr; 0.01 to 0.20 percent of Y; the rest is Ti and unavoidable impurities. The damping performance of the invention is more than 2 times than the optimized performance that can be achieved by the existing damping alloy of a Ti-Ni-Cu-Y system; besides, the mechanical property is equivalent; the production mode thereof is to adopt the normal production mode and is easily carried out.

Description

technical field [0001] The invention relates to a titanium alloy, in particular to a multi-element alloy with high damping titanium alloy. Background technique [0002] At present, high damping alloys can be divided into four types: complex phase type, strong ferromagnetic type, twin (double) crystal type and dislocation type. Representative multiphase alloys include cast iron, Al-Zn and Fe-C-Si alloys, but their disadvantages are low strength and poor corrosion resistance. Representative strong ferromagnetic alloys include pure iron, Co-Ni and Fe-Cr-Al. The damping performance is generally about 20% to 30% of the specific damping coefficient SDC. The disadvantage is that the damping performance is closely related to the strength of the external magnetic field. Twin (double) alloy high damping alloys mainly include Mn-Cu, Ti-Ni and Cu-Al-Ni. The damping performance is generally about 30% to 40% of the specific damping coefficient SDC. Typical dislocation-type damping allo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C14/00C22C30/02
Inventor 吴欢赵永庆侯智敏李倩罗媛媛
Owner NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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