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Nickel-based high-temperature alloy powder suitable for powder metallurgy and preparation method thereof

A technology of nickel-based superalloy and powder metallurgy, applied in the field of powder metallurgy nickel-based superalloy powder and its preparation, to achieve the effects of low inclusions, low production cost, and low sulfur content

Inactive Publication Date: 2021-07-30
HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the above technical problems, the present invention discloses a nickel-based superalloy powder suitable for powder metallurgy and a preparation method thereof, which solves the problems of the oxygen content and nitrogen content of the prepared nickel-based superalloy powder existing in the prior art

Method used

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  • Nickel-based high-temperature alloy powder suitable for powder metallurgy and preparation method thereof
  • Nickel-based high-temperature alloy powder suitable for powder metallurgy and preparation method thereof
  • Nickel-based high-temperature alloy powder suitable for powder metallurgy and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0082] A nickel-based superalloy powder, the composition of which is calculated by mass percentage: Cr: 12.5%, Co: 19%, Mo: 3.1%, Ta: 1.3%, Ti: 2.1%, Al: 2.6%, Nb: 1.5 %, Hf: 0.15%, B: 0.01%, C: 0.022%, and the balance consists of Ni and unavoidable impurities. The nickel-based superalloy powder is prepared by the following steps:

[0083]Step 1, according to the chemical composition of the nickel-based superalloy such as the proportion of alloy elements such as Ni, Cr, W and the amount of burning loss, the ingredients are selected, and Ni-Co, Ni-Cr, Ni-Mo master alloy and other configurations of nickel are selected. Base superalloy raw materials, spare.

[0084] Step 2, charging, the feeding mechanism feeds the material into the melting furnace and clamps it. Vacuumize, vacuumize the vacuum induction furnace and atomization furnace, and the vacuum degree reaches 10 -3 Pa. Fill the smelting chamber and atomizing furnace with high-purity Ar gas as a protective gas to avoid ...

Embodiment 2

[0095] A nickel-based superalloy powder, the composition of which is calculated by mass percentage: Cr: 9.6%, Co: 19.8%, Mo: 3.7%, Ti: 2.2%, Al: 3.4%, W: 5.1%, Hf: 0.1 %, B: 0.003%, C: 0.03%, and the balance consists of Ni and unavoidable impurities. The nickel-based superalloy powder is prepared by the following steps:

[0096] Step 1, according to the chemical composition of the nickel-based superalloy such as the proportion of alloy elements such as Ni, Cr, W and the amount of burning loss, the ingredients are selected, and Ni-Co, Ni-Cr, Ni-Mo master alloy and other configurations of nickel are selected. Base superalloy raw materials, spare.

[0097] Step 2, charging, the feeding mechanism feeds the material into the melting furnace and clamps it. Vacuumize, vacuumize the vacuum induction furnace and atomization furnace, and the vacuum degree reaches 10 -3 Pa. Fill the smelting chamber and atomizing furnace with high-purity Ar gas as a protective gas to avoid oxidation ...

Embodiment 3

[0108] A nickel-based superalloy powder, the composition of which is calculated by mass percentage: Cr: 12.8%, Co: 15.1%, Mo: 5.2%, Ti: 2.1%, Al: 4.7%, W: 5.8%, Hf: 0.4 %, B: 0.008%, C: 0.04%, and the balance consists of Ni and unavoidable impurities. The nickel-based superalloy powder is prepared by the following steps:

[0109] Step 1, according to the chemical composition of the nickel-based superalloy such as the proportion of alloy elements such as Ni, Cr, W and the amount of burning loss, the ingredients are selected, and Ni-Co, Ni-Cr, Ni-Mo master alloy and other configurations of nickel are selected. Base superalloy raw materials, spare.

[0110] Step 2, charging, the feeding mechanism feeds the material into the melting furnace and clamps it. Vacuumize, vacuumize the vacuum induction furnace and atomization furnace, and the vacuum degree reaches 10 -4 Pa~10 -3 Pa. Fill the smelting chamber and atomizing furnace with high-purity Ar gas as a protective gas to avoid...

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Abstract

The invention provides nickel-based high-temperature alloy powder suitable for powder metallurgy and a preparation method thereof. The nickel-based high-temperature alloy powder comprises the following components in percentage by mass: 8.5%-16% of Cr, 14%-20% of Co, 3%-6% of Mo, 0%-2.5% of Ta, 1%-4% of Ti, 2.5%-5% of Al, 0%-6% of W, 0%-3% of Nb, 0.1%-0.5% of Hf, 0.003%-0.03% of B, 0.01%-0.05% of C and the balance of Ni and impurities. According to the technical scheme, the nickel-based high-temperature alloy powder has the comprehensive performance of high strength, high hardness and high toughness. The alloy powder prepared through the preparation method is uniform in chemical component, free of generation of brittle harmful phases, low in oxygen content, low in nitrogen content, low in sulfur content, high in sphericity degree, low in hollow powder rate, low in inclusions, small in particle size and low in production cost.

Description

technical field [0001] The invention belongs to the technical field of powder metallurgy and nickel-based superalloy, and in particular relates to a nickel-based superalloy powder suitable for powder metallurgy and a preparation method thereof. Background technique [0002] Nickel-based superalloy is a high-alloyed austenitic alloy. It has high strength and good oxidation resistance and oxygen corrosion resistance in the range of 650-1000 ° C. It is the most widely used superalloy with high temperature strength. One of the highest alloys, it has the characteristics of uniform performance, fine grain size, strong rigidity, and high fatigue resistance. It is widely used in the manufacture of parts such as advanced aero-engines and gas turbine blades. Today most of the turbine disks, compressor disks and gas turbine blades of civil and military aero-engines are made by powder metallurgy. [0003] The performance of the turbine disk mainly depends on the structure, and the stru...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C19/05B22F1/00B22F9/08C22B9/04C22C1/03
CPCC22C19/057C22C19/056C22C1/023C22C1/03C22B9/04B22F9/082B22F2009/0848B22F2009/0824B22F2009/0896B22F2009/0844B22F2009/086B22F1/065
Inventor 计红军陈闯朱立华李明雨
Owner HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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