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High-strength and high-toughness nickel-base high-temperature alloy foil and preparation method thereof

A nickel-based superalloy, high-strength and high-toughness technology, applied in the field of nickel-based superalloy foil, high-strength and high-toughness nickel-based superalloy foil and its preparation, can solve problems such as inapplicability, achieve low density, improve high-temperature mechanics Performance, the effect of good processability

Active Publication Date: 2020-10-30
BEIJING BEIYE FUNCTIONAL MATERIALS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The purpose of the present invention is to provide a high-strength and high-toughness nickel-based superalloy foil and its preparation method, which solves the problem that the existing traditional nickel-based superalloy is not suitable for manufacturing aero-engines, ground or naval vehicles that serve at temperatures around 980°C and below. Problems with Superalloy Foils for Gas Turbine Honeycomb Seals

Method used

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  • High-strength and high-toughness nickel-base high-temperature alloy foil and preparation method thereof

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Effect test

Embodiment 1

[0048] According to the ingredients shown in alloys 1-2 in Table 1, weigh C, Cr, Al, Fe, Y, Ti, Mn, Ce, Si, B raw materials, the raw material Cr is a block with a purity of 99.99%, and the raw material Fe It is in the form of a block with a purity of 99.8%, and the raw material Ni is in the form of a block with a purity of 99.99%. Put the raw materials C, Cr, Fe and Ni into the crucible of the vacuum induction melting furnace, and then vacuumize it. When the vacuum degree reaches 2Pa, heat it with a low power of 100KW to discharge the gas attached to the charge; when the vacuum degree reaches 0.5Pa, Use 280KW power to melt the material until the furnace material is completely melted; after the furnace material is completely melted, raise the temperature to 1590°C, and after 45 minutes of high-temperature refining, power off the conjunctiva; then use 280KW high power to heat up and break the membrane. Ti, C, B, Ce, and evenly stirred; Alloy secondary refining: continue to heat ...

Embodiment 2

[0050] According to the ingredients shown in the alloys 3 to 4 in Table 1, weigh C, Cr, Al, Fe, Y, Ti, Mn, Ce, Si, B raw materials, the raw material Cr is a block with a purity of 99.992%, and the raw material Fe It is in the form of a block with a purity of 99.85%, and the raw material Ni is in the form of a block with a purity of 99.992%. Put the raw materials C, Cr, Fe and Ni into the crucible of the vacuum induction melting furnace, and then vacuumize it. When the vacuum degree reaches 1Pa, heat with a low power of 80KW to discharge the gas attached to the charge; when the vacuum degree reaches 0.4Pa, Use 285KW power to melt the material until the furnace material is completely melted; after the furnace material is completely melted, raise the temperature to 1600°C, and after 40 minutes of high-temperature refining, power off the conjunctiva; then use 285KW high power to heat up and break the membrane. Ti, C, B, Ce, and evenly stirred; alloy secondary refining: continue to...

Embodiment 3

[0052] According to the ingredients shown in alloys 5-6 in Table 1, weigh C, Cr, Al, Fe, Y, Ti, Mn, Ce, Si, B raw materials, the raw material Cr is a block with a purity of 99.995%, and the raw material Fe It is a block with a purity of 99.9%, and the raw material Ni is a block with a purity of 99.992%. Put the raw materials C, Cr, Fe and Ni into the crucible of the vacuum induction melting furnace, and then vacuumize it. When the vacuum degree reaches 1.5Pa, heat it with a low power of 90KW to discharge the gas attached to the charge; when the vacuum degree reaches 0.3Pa , with a power of 290KW, until the charge is completely melted; after the charge is completely melted, the temperature is raised to 1610°C, and the high-temperature refining is performed for 45 minutes. , Ti, C, B, Ce, and evenly stirred; secondary refining of the alloy: continue to heat up, refining at 1590 °C for 2 minutes; adjust the furnace temperature to 1510 °C, and pour, directly pouring into a size of...

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Abstract

The invention discloses high-strength and high-toughness nickel-based high-temperature alloy foil and a preparation method thereof, and belongs to the technical field of nickel-based high-temperaturealloy materials. The foil comprises the following chemical elements of, by mass, 0.01-0.05% of C, 16-18% of Cr, 4-6% of Al, 3-7% of Fe, 0.001-0.02% of Y, 0.01-0.8% of Ti, 0.05-2% of Mn, 0.001-0.03% ofCe, 0.001-0.8% of Si, 0.001-0.01% of B, less than or equal to 0.20% of W, less than or equal to 0.10% of Co, less than or equal to 0.10% of Mo, less than or equal to 0.03% of Zr, and the balance Ni and inevitable impurities. The nickel-based high-temperature alloy foil for a honeycomb sealing structure can service at 980 DEG C or below with low density, low linear expansion coefficient, high temperature wear resistance, high temperature corrosion resistance, oxidation resistance, high strength, high toughness, easiness in processing and molding and easiness in welding, and the problems of long process flow, low yield and poor surface quality and plate shape of the finished product foil of an existing nickel-based high-temperature alloy foil are solved.

Description

technical field [0001] The invention belongs to the technical field of high-temperature alloy processing and preparation, and in particular relates to a high-strength and high-toughness nickel-based high-temperature alloy foil and a preparation method thereof. In particular, it relates to a nickel-based superalloy foil with low density, low linear expansion coefficient, high temperature wear resistance, high temperature corrosion resistance, oxidation resistance, high strength, high toughness and good welding performance at a service temperature of 980°C. Background technique [0002] Superalloys refer to a class of metal materials that use iron, cobalt, and nickel as the matrix and can work for a long time at high temperatures above 600°C and under a certain force. According to different matrix elements, it can be divided into iron-based, nickel-based and cobalt-based superalloys, and according to different preparation methods, it can be divided into casting, deformation an...

Claims

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Application Information

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IPC IPC(8): C22C19/05C22C1/02C22F1/10C22F1/02
CPCC22C1/023C22C19/056C22F1/02C22F1/10
Inventor 安宁张志伟田建军牛永吉章清泉李振瑞吕晨熠黄建柳海波彭劼
Owner BEIJING BEIYE FUNCTIONAL MATERIALS CORP
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