Nickel-niobium intermediate alloy and preparation method thereof

Abstract

The invention discloses a nickel-niobium intermediate alloy material which comprises the following components in percentage by mass: 60-70% of niobium, 26.5-36.5% of nickel, less than or equal to 1.5% of aluminum, less than or equal to 0.1% of oxygen, less than or equal to 0.05% of nitrogen, less than or equal to 0.3% of silicon, less than or equal to 0.01% of phosphorus, less than or equal to 1% of iron, less than or equal to 0.2% of tantalum, less than or equal to 0.1% of titanium, less than or equal to 0.005% of lead, less than or equal to 0.005% of tin, less than or equal to 0.05% of carbon, less than or equal to 0.01% of sulfur and the balance being impurities. The invention further discloses a preparation method of the nickel-niobium intermediate alloy material. By utilizing the nickel-niobium intermediate alloy, the temperature of smelting of a niobium-nickel base containing alloy is greatly decreased; as strict raw material control is adopted during the preparation of the nickel-niobium intermediate alloy, the prepared product has high purity, low impurity content, good controllability; the prepared alloy using the nickel-niobium intermediate alloy has low alloy nitrogen oxygen content and is purer; and the production efficiency is high.

Description

technical field [0001] The invention relates to the field of metal materials, in particular to a nickel-niobium master alloy and a preparation method thereof. Background technique [0002] The melting point of pure niobium bars in the prior art is 2467°C, which is too high to be conducive to industrial production. In addition, the current production of alloy materials does not strictly control the raw materials and reaction environment, resulting in low purity of the product, and the reaction process produces The residue and the alloy ingot are not easy to separate, so that the nitrogen and oxygen content in the alloy is high, resulting in low purity. [0003] With the development of science and technology, more and more niobium elements are added to improve the performance of special alloy materials. For example, nickel-based superalloys are the most widely used and highest high-temperature strength alloys among superalloys. It not only has good high temperature oxidation ...

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Problems solved by technology

[0002] The melting point of pure niobium bars in the prior art is 2467°C, which is too high to be conducive to industrial production. In addition, the current production of alloy materials does not strictly control the raw materials and reaction environment, resulting in low purity of the product, and the reaction process produces The residue and the alloy ingot are not easy to separate, so that the nitrogen and oxygen content in the alloy is high, resulting in low purity

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