High-oxidation-resistance lanthanide nickel base superalloy and preparation method and application thereof

A technology of nickel-based superalloy and superalloy, which is applied in the field of lanthanide nickel-based superalloy with high oxidation resistance and its preparation, can solve the problem of affecting the high-temperature oxidation resistance of the alloy, the mechanical properties of the nickel-based alloy are not sufficiently strengthened, and the high temperature The problem of poor oxidation resistance, etc., to achieve excellent high temperature oxidation resistance, excellent high temperature oxidation resistance and mechanical strength, the effect of strengthening mechanical properties

Inactive Publication Date: 2018-07-27
SICHUAN JIANGYOU LIUHE STEAM TURBINE MATERIAL
View PDF4 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the amount of lanthanides added in the existing nickel-based superalloys is less, only less than 1%, so that the mechanical properties of the nickel-based alloys have not been sufficiently strengthened, because too much lanthanides are added to the existing nickel-based superalloys. Some alloys will affect the high-temperature oxidation resistance of the alloy. The basis of lanthanide elements to strengthen the alloy is still under continuous research. How to increase the amount of

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0030] Example 1

[0031] A lanthanide nickel-based superalloy material, in terms of weight percentage, its elemental composition includes: C 0.08%, Cr9.55%, Mo 3.95%, Co 6.10%, La 2.21%, Al 1.65%, Nb 0.6%, Fe 4.5%, Mn 1.12%, and the balance is Ni and unavoidable impurities.

[0032] The preparation method of the above-mentioned superalloy material is as follows:

[0033] (1) Weigh the smelting raw materials containing the above elements according to the ratio of each element, add the raw materials to the smelting furnace, and perform primary smelting in a 68Pa vacuum atmosphere. The primary smelting temperature is 1380°C, and the primary smelting melting rate is 1.8kg / min. Get molten steel

[0034] (2) When the raw material in step (1) is melted by more than 60%, increase the temperature of the melting furnace to 1540°C, and reduce the pressure to 4Pa vacuum atmosphere for secondary smelting. The time for secondary smelting is 46 minutes, and then The molten steel is poured into a ...

Example Embodiment

[0040] Example 2

[0041] A lanthanide nickel-based superalloy material, in terms of weight percentage, its element composition includes: C 0.12%, Cr 14.35%, Mo 5.15%, Co 7.20%, Ce 3.33%, Al 1.85%, Nb 1.4%, Fe 7.3%, Mn 1.35%, and the balance is Ni and unavoidable impurities.

[0042] The preparation method of the above-mentioned superalloy material is as follows:

[0043] (1) Weigh the smelting raw materials containing the above elements according to the ratio of each element, add the raw materials to the smelting furnace, and perform primary smelting in a vacuum atmosphere of 72 Pa. The primary smelting temperature is 1420°C, and the primary smelting speed is 2.5 kg / min. Get molten steel

[0044] (2) When the raw materials in step (1) are melted by more than 60%, increase the temperature of the melting furnace to 1560°C, and reduce the pressure to 7Pa vacuum atmosphere for secondary smelting. The secondary smelting time is 68 minutes, and then The molten steel is poured into a cons...

Example Embodiment

[0050] Example 3

[0051] A lanthanide nickel-based superalloy material, in terms of weight percentage, its element composition includes: C 0.09%, Cr 12.45%, Mo 4.25%, Co 6.58%, lanthanide 2.86%, Al 1.75%, Nb 1.20% , Fe 6.1%, Mn 1.24%, and the balance is Ni and unavoidable impurities.

[0052] The preparation method of the above-mentioned superalloy material is as follows:

[0053] (1) Weigh the smelting raw materials containing the above elements according to the ratio of each element, add the raw materials to the smelting furnace, and perform primary smelting in a vacuum atmosphere of 70 Pa. The primary smelting temperature is 1398°C, and the primary smelting speed is 2.1 kg / min. Get molten steel

[0054] (2) When the raw material in step (1) is melted by more than 60%, increase the temperature of the melting furnace to 1552°C, and perform secondary smelting in a vacuum atmosphere of 5Pa. The secondary smelting time is 55 minutes, and then the molten steel Poured into a consumable...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Oxidative weight gainaaaaaaaaaa
Tensile strengthaaaaaaaaaa
Yield strengthaaaaaaaaaa
Login to view more

Abstract

The invention provides a high-oxidation-resistance lanthanide nickel base superalloy and a preparation method and application thereof. The superalloy comprises, by weight, 0.08-0.12% of C, 9.55-14.35%of Cr, 3.95-5.15% of Mo, 6.10-7.20% of Co, 2.21-3.33% of lanthanide elements, 1.65-1.85% of Al, 0.6-1.4% of Nb, 4.5-7.3% of Fe, 1.12-1.35% of Mn, and the balance Ni and inevitable impurities. The high-oxidation-resistance lanthanide nickel base superalloy has good high-temperature mechanical properties and low impurity content, and has good high temperature oxidation resistance at the same time,and can be used as the material of a blade steel of an engine of a turbine.

Description

technical field [0001] The invention relates to a nickel-based superalloy material, in particular to a lanthanide nickel-based superalloy with high oxidation resistance and a preparation method and application thereof. Background technique [0002] High-temperature alloy materials refer to high-temperature metal materials that work for a long time above 760-1500°C and under certain stress conditions. According to different temperature conditions, high-temperature alloy materials can be divided into three categories: 760°C high-temperature materials, 1200°C high-temperature materials and 1500°C ℃ high temperature materials, its tensile strength can usually reach 800MPa. Due to its excellent comprehensive mechanical properties, oxidation resistance and corrosion resistance, superalloy materials have become indispensable materials for key components in petrochemical, nuclear energy, aviation and other industrial fields that withstand high temperatures, corrosion, loads and othe...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C22C19/05C22C1/02C22C1/03C22F1/10
CPCC22C19/056C22C1/023C22C1/03C22F1/10
Inventor 李建雷德江张华国粟硕周江波韦家向付洋
Owner SICHUAN JIANGYOU LIUHE STEAM TURBINE MATERIAL
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products