Nickel-aluminum bronze alloy and preparation method thereof

A nickel-aluminum bronze and alloy technology, applied in the field of nickel-aluminum bronze alloy materials and its preparation, can solve problems such as lack of data support performance, improve hardness and wear resistance, improve hardness and wear resistance, and have wide application prospects Effect

Active Publication Date: 2015-08-26
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, other conventional nickel-aluminum-bronze alloys are also introduced, but they

Method used

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

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Embodiment 1

[0027] Electrolytic copper, pure aluminum, pure nickel, pure iron and pure manganese are respectively used as raw materials, and the mass ratio of raw materials is 74:10:4:4:8. Fill the raw materials into the crucible at one time and heat it, first preheat it and then heat it quickly, stir after the copper block starts to melt, so that the high melting point metal iron, nickel and manganese can be melted faster. After all the metals are completely melted, continue to stir to achieve the effect of uniform composition and degassing. After standing for a period of time, the molten metal is cooled into ingots.

[0028] Heat the above ingot from room temperature at a rate of 8-10°C / min to 950°C for 2 hours, take out the sample and immediately put it in water for quenching. Then heat it up to 450°C at a speed of 10°C / min, keep it warm for 2 hours, put it in the air to cool, and you get it.

[0029] The chemical elements and mass percentages contained in the nickel-aluminum-bronze a...

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Abstract

The invention discloses a nickel-aluminum bronze alloy. The nickel-aluminum bronze alloy comprises the following chemical elements in percentage by mass: 9.5-11.5% of Al, 3.0-4.5% of Fe, 3.5-4.5% of Ni, 3-4% of Mn and the balance of Cu. The invention further provides a preparation process of the nickel-aluminum bronze alloy. The preparation process comprises the following steps: according to the mass percent of all chemical elements and by taking burning loss quantity into consideration, preparing raw materials; putting the raw materials into a furnace for melting and cooling molten raw materials into an ingot; heating the ingot to 950-980 DEG C from room temperature at the speed of 8-10 DEG C/min; keeping heat for 2 h above; taking out a sample and putting the sample into water for quenching; heating to 300-450 DEG C at the speed of 8-10 DEG C/min; keeping heat for 1-3 h; and putting the sample in air for cooling, so as to obtain the nickel-aluminum bronze alloy. The nickel-aluminum bronze alloy provided by the invention is high in hardness and wear resistance, the dry friction coefficient of the nickel-aluminum bronze alloy is about 0.25, microhardness can reach 460 HV and the nickel-aluminum bronze alloy has a wide application prospect in the fields of marine propellers, large-sized pump blades, fasteners, seawater pipe fittings, welding, explosion-proof equipment and sea water desalination.

Description

technical field [0001] The invention relates to the field of manufacturing metal alloy materials, in particular to a nickel-aluminum bronze alloy material and a preparation method thereof. Background technique [0002] Nickel-aluminum-bronze alloy has good comprehensive mechanical properties and excellent resistance to stress corrosion cracking, corrosion fatigue, cavitation corrosion, erosion resistance and marine biofouling resistance. Nickel-aluminum-bronze alloy is far superior to stainless steel and brass in seawater corrosion fatigue resistance, better than manganese bronze; nickel-aluminum bronze alloy is also much higher in erosion resistance than brass, similar to B30 alloy, and resistant to cavitation corrosion The performance is exceptionally good. Nickel-aluminum-bronze alloys have been widely used in marine propellers, large pump blades, fasteners, seawater pipe fittings and other components. With the development of industry, nickel-aluminum-bronze alloys also ...

Claims

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Application Information

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IPC IPC(8): C22C9/01C22F1/08
Inventor 宋振纶李振亚杨丽景胡方勤
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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