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Nickel-based alloy and preparation method thereof

A technology of nickel-based alloys and alloys, applied in metal processing equipment, manufacturing tools, casting and molding equipment, etc., can solve the problems of small grain size, corrosion resistance and poor casting performance, achieve fine grain size, avoid Dendritic segregation, the effect of eliminating water vapor

Active Publication Date: 2015-03-04
HEFEI UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] One of the purposes of the present invention is to overcome the deficiencies of the above-mentioned prior art and provide a nickel-based alloy with smaller grain size and stronger corrosion resistance than traditional cast nickel-based alloys, which can effectively avoid Under non-vacuum conditions, nickel-based alloys have problems such as casting cracking, corrosion resistance and poor casting performance caused by conditions such as gas absorption, oxidation and dendrite segregation; at the same time, the invention also discloses the production method of the above alloy, so as to be able to Complete its alloy production process through simple operations

Method used

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  • Nickel-based alloy and preparation method thereof

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Embodiment 1

[0029] According to the mass percentage, respectively weigh Cu: 28%, Mn: 0.5%, Al: 2.5%, Ti: 0.5%, Ce: 0.025%, the balance is Ni and unavoidable impurity elements, and the sum of the mass percentages of each component is 100%. Melting is carried out in a medium frequency induction furnace under non-vacuum conditions (that is, normal atmospheric conditions) according to the above-mentioned composition ratios. The order of alloy addition is: Ni plate + Cu block + solvent (that is, glass) → add sponge Ti + Mn plate + Al wire after melting, thereby initially forming alloy liquid → add Ni-18Mg master alloy to the above alloy liquid → measure temperature out of the oven. The whole alloy melting time is controlled at 60min. When the ingredients are completely melted, by adding Ni-18Mg master alloy, the magnesium in it reacts with the oxygen in the alloy liquid to form solid-phase magnesium oxide slag, and the above alloy liquid is precipitated to control the oxygen content of the a...

Embodiment 2

[0031] According to the mass percentage, weigh Cu: 30%, Mn: 1.0%, Fe: 1.5%, Al: 2.8%, Ti: 0.75%, Ce: 0.045%, the balance is Ni and unavoidable impurity elements, each component The sum of the mass percentages is 100%. Melting is carried out in a medium frequency induction furnace under non-vacuum conditions (that is, normal atmospheric conditions) according to the above-mentioned composition ratios. The order of alloy addition is: Ni plate + Cu block + solvent (that is, glass) → adding sponge Ti + Mn plate + Al wire after melting, initially forming alloy liquid → adding Ni-18Mg master alloy → temperature measurement and release. The smelting time of the whole alloy is controlled at 75 minutes; when the ingredients are completely melted, add Ni-18Mg master alloy to make the magnesium in it react with the oxygen in the alloy liquid to form solid-phase magnesium oxide slag, and precipitate the above alloy liquid to control the oxygen content of the alloy liquid. If the content i...

Embodiment 3

[0033]According to the mass percentage, respectively weigh Cu: 35%, Mn: 1.5%, Fe: 2.5%, Al: 3.5%, Ti: 0.9%, Ce: 0.065%, the balance is Ni and unavoidable impurity elements, components The sum of the mass percentages is 100%. According to the above composition ratio, smelting is carried out in an intermediate frequency induction furnace under non-vacuum conditions (that is, normal atmospheric state), and the order of adding the alloy is: Ni plate + Cu block + solvent (that is, glass) → adding sponge Ti after melting + Mn plate + Al wire, alloy liquid is initially formed → Ni-18Mg master alloy is added to the alloy liquid → temperature measurement is released; the melting time of the whole alloy is controlled at 90min; when the ingredients are completely melted, Ni-18Mg master alloy is added, and finally magnesium and Oxygen reacts to generate solid-phase magnesium oxide slag, and the alloy liquid is discharged, thereby controlling the oxygen content of the alloy liquid to be be...

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Abstract

The invention belongs to the technical field of material preparation and in particular relates to a nickel-based alloy and a preparation method thereof. The nickel-based alloy comprises the following components in percentage by weight: 25-35% of Cu, 0.5-1.5% of Mn, 0-2.5% of Fe, 2.5-3.5% of Al, 0.5-0.9% of Ti, 0.025-0.065% of rare earth Ce and the balance of Ni and inevitable impurity elements, wherein the sum of the percents by weight of the components is 100%. The preparation method of the nickel-based alloy comprises the following steps: smelting the components, carrying out oxygen content treatment on an alloy liquid, carrying out modification treatment on the alloy liquid, and finally casting and cooling. The nickel-based alloy can have smaller grain size, corrosion resistance is stronger compared with that of the traditional casting nickel-based alloy, and the nickel-based alloy is also extremely simple and easy to prepare.

Description

technical field [0001] The invention belongs to the technical field of material preparation, and in particular relates to a nickel-based alloy and a preparation method thereof. Background technique [0002] Nickel-based alloys mainly composed of nickel and supplemented by copper have good corrosion resistance and high temperature resistance; it is one of the most widely used corrosion-resistant alloys, and is widely used in the manufacture of heat-resistant and corrosion-resistant media. It is often used in the manufacture of aviation, marine, chemical pump valves and other parts. Since the main components of this type of alloy are nickel and copper, the melting point of nickel is 1453°C, and the melting point of copper is 1083°C. The following problems often occur: 1), the fluidity of the alloy liquid is poor, and when the alloy solidifies, a large number of pores will be formed or a large number of inclusions will be formed on the grain boundary; 2), the casting shrinks g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C19/03C22C1/02C22C1/06B22C9/02B22C9/12B22D30/00
Inventor 吴进钱宫恩祥李强柴立平何玉杰
Owner HEFEI UNIV OF TECH
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