Nickel-aluminum bronze alloy material and preparation method thereof

An alloy material, nickel-aluminum bronze technology, applied in the field of alloy materials, can solve the problems of poor strength, mechanical properties and tribological properties, and achieve the effects of avoiding the generation of complex phases, low price and stable process

Active Publication Date: 2018-03-09
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the above defects or improvement needs of the prior art, the present invention provides a nickel-aluminum bronze alloy material and a preparation method thereof. The nickel-aluminum bronze alloy material has fine grains, excellent mechanical properties and tribological properties, and a simple preparation method It is easy to realize, and the process parameters in the preparation process are easy to control, thereby solving the technical problems of poor strength, mechanical properties and tribological properties of nickel-aluminum-bronze alloy materials in the prior art under long-term and harsh application environments

Method used

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  • Nickel-aluminum bronze alloy material and preparation method thereof
  • Nickel-aluminum bronze alloy material and preparation method thereof
  • Nickel-aluminum bronze alloy material and preparation method thereof

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preparation example Construction

[0037] The preparation method of the nickel aluminum bronze alloy material that the present invention proposes, comprises the steps:

[0038] (1) According to the above-mentioned molar ratio of each element, weigh Cu powder, Al powder, Ni powder, Fe powder, Mn powder and V powder, and mix them to obtain ingredients. The average particle size of the ingredients is 30-50 μm, preferably the average particle size The diameter is 45μm;

[0039] (2) The ingredients are smelted under inert gas protection conditions to obtain a melt; it can be smelted in a high vacuum arc melting system, and the smelting process should reach a vacuum degree of 5×10 before argon protection. -3 Above Pa.

[0040] (3) The melt is gas-atomized, and powders of different particle sizes produced in the gas-atomization process are collected; gas atomization is carried out under inert gas protection conditions, preferably under high-purity argon protection conditions. Atomization: The gas atomization pressur...

Embodiment 1

[0045] like figure 1 Shown, a kind of preparation method of the nickel-aluminum bronze alloy of high strength, high wear resistance, it comprises the steps:

[0046] 1) According to the molar percentage of Cu:Al:Ni:Fe:Mn:V=81.8:9.0:4.0:3.5:0.5:1.2, select Cu powder 14.7g, Al powder 1.6g, Ni powder 0.6g, Fe powder 0.5g , 0.1 gram of Mn powder and 0.2 gram of V powder, the average particle size of the powder is 30-50 μm; Cu powder, Al powder, Ni powder, Fe powder, Mn powder and V powder are mixed to obtain the batching;

[0047] 2) Place the above ingredients in a high vacuum arc melting system for melting, and the vacuum degree will reach 5×10 -3 Pa, filled with argon for protection;

[0048] 3) The melt is introduced into the atomization equipment for atomization. The atomization is carried out with high-purity argon gas. The powder is collected in the powder receiving tank, and the finer powder (particle size<50μm) is collected in the cyclone powder receiving tank.

[004...

Embodiment 2

[0052] 1) According to the molar percentage of Cu:Al:Ni:Fe:Mn:V=81.8:9.0:4.0:3.5:0.5:1.2, select Cu powder 14.7g, Al powder 1.6g, Ni powder 0.6g, Fe powder 0.5g , 0.1 gram of Mn powder and 0.2 gram of V powder, the average particle size of the powder is 30-50 μm; Cu powder, Al powder, Ni powder, Fe powder, Mn powder and V powder are mixed to obtain the batching;

[0053] 2) Place the above ingredients in a high vacuum arc melting system for melting, and the vacuum degree will reach 5×10 -3 Pa, filled with argon for protection;

[0054] 3) The melt is introduced into the atomization equipment for atomization. The atomization is carried out with high-purity argon gas. The powder is collected in the powder receiving tank, and the finer powder (particle size<50μm) is collected in the cyclone powder receiving tank.

[0055] 4) The nickel-aluminum-bronze alloy was obtained by spark plasma sintering the finer powder prepared by the above gas atomization. -2 Pa, the holding time is...

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Abstract

The invention belongs to the field of alloy materials and in particular relates to a nickel-aluminum bronze alloy material and a preparation method thereof. The nickel-aluminum bronze alloy material comprises the following elements by mole percent: 9.0-11.5% of Al, 4.0-4.5% of Ni, 3-3.5% of Fe, 0.3-0.85% of Mn, 1.0-1.5% of V and the balance of copper. The nickel-aluminum bronze alloy material is prepared through the combination of gas atomization and a powder metallurgy method, is fine in crystal granule, comprises nanoparticle precipitated phases of Fe3Al and NiAl, and is excellent in mechanical property and friction property; the preparation method is simple and easy, and process parameters can be easily controlled in the preparation process. The alloy material is very high in yield strength and ultimate compressive strength and good in friction property, has the characteristics of wide raw material source, relatively low price, relatively low equipment cost and easiness in control,and is applicable to large-scale production.

Description

technical field [0001] The invention belongs to the field of alloy materials, and more specifically relates to a nickel-aluminum bronze alloy material and a preparation method thereof. Background technique [0002] Nickel-aluminum bronze materials have excellent comprehensive properties, including high tensile strength, good corrosion fatigue resistance and cavitation corrosion resistance. The propeller made of high-strength nickel-aluminum bronze has a moment of inertia 15%-19% lower than that of a propeller made of brass, and the bearing capacity of the propeller is improved when the power of the marine engine is the same [1] ([1] Song Dejun , Hu Guangyuan, Lu Hai, et al. Application and research status of nickel-aluminum-bronze alloys. Materials Heralds, 2008, 21:450-452.). [0003] Nickel-aluminum bronze is widely used in the manufacture of ship propellers all over the world because of its excellent properties. Since 1942, the British Navy used nickel-aluminum bronze m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/01B22F3/105B22F9/08C22C1/02C22C1/04
CPCB22F3/105B22F9/082B22F2998/10C22C1/02C22C1/0425C22C9/01B22F2009/0848
Inventor 翟文正卢文龙
Owner HUAZHONG UNIV OF SCI & TECH
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