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A kind of nickel base superalloy and preparation method thereof

A technology for superalloys and metal products, which is applied in the field of superalloys and can solve the problems of mechanical properties such as fatigue strength, yield strength and ultimate tensile strength.

Active Publication Date: 2018-09-14
CENT SOUTH UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Although nickel-based superalloys have high-temperature structural stability, fatigue resistance, corrosion resistance, and oxidation resistance, the mechanical properties of nickel-based alloys that have been served at high temperatures for a long time will decline significantly in terms of fatigue strength, yield strength, and ultimate tensile strength.

Method used

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  • A kind of nickel base superalloy and preparation method thereof
  • A kind of nickel base superalloy and preparation method thereof
  • A kind of nickel base superalloy and preparation method thereof

Examples

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Embodiment 1

[0090] The present invention has no special limitation on the sources of the raw materials used in the examples, they can be purchased from the market or prepared according to the preparation methods well known to those skilled in the art.

[0091] The present invention has no special restrictions on the preparation method of the high-Co powder metallurgy high-temperature nickel alloy described in the examples and the source of other raw materials, which can be prepared according to the preparation method known to those skilled in the art or purchased on the market.

[0092] The present invention prepares the powder metallurgy high-temperature nickel alloy CSU-A1 according to a certain alloy composition ratio, and compares the composition with the existing typical second-generation powder metallurgy superalloy. For the comparison results, see Table 1, which is the present invention The superalloy obtained in Example 1 is compared with the composition of the second-generation ty...

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Abstract

The invention provides a nickel-based high temperature alloy and a preparing method thereof, and specifically a metallurgical nickel alloy with powder containing much Co and objects manufactured from the metallurgical nickel alloy. The nickel-based high temperature alloy comprises, by mass, 25-27% of Co, 12.5-13.5% of Cr, 3.0-3.4% of Al, 3.5-3.9% of Ti, 3.75-4.25% of W, 3.75-4.25% of Mo, 0.75-1.15% of Nb, 0.17-0.23% Hf, 0.04-0.06% C, 0.003-0.015% of B, 0.03-0.07% of Zr and the balance Ni. The high temperature alloy has better structure stability and high-temperature strength, and temperature capability of the alloy is further improved.

Description

technical field [0001] The invention relates to the technical field of superalloys, in particular to a nickel-based superalloy and a preparation method thereof. Background technique [0002] Generally speaking, superalloys refer to high-temperature metal materials that can work for a long time above 600 °C and under certain stress conditions. performance. With the rapid development of industry, superalloys have shown good application prospects in various fields, and are mainly used to manufacture high-temperature components such as turbine blades, guide vanes, turbine disks, high-pressure compressor disks, and combustion chambers of gas turbine engines. [0003] According to the preparation process, superalloy materials can be divided into deformed superalloys, cast superalloys and powder metallurgy superalloys. Superalloy materials can be divided into iron-based superalloys, nickel-based superalloys and cobalt-based superalloys according to matrix elements. Due to the in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C19/03
Inventor 不公告发明人
Owner CENT SOUTH UNIV
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