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ODS (oxide dispersion strengthened) high-temperature alloy material for engine turbine and preparation method of ODS high-temperature alloy material

A high-temperature alloy and ODS technology, applied in the field of high-temperature alloys, can solve the problems of easy expansion of fatigue cracks, deterioration of hot working performance, and reduction of low-cycle fatigue performance, and achieve excellent machinability, excellent tensile strength, and good structural stability Effect

Active Publication Date: 2015-07-22
北京金恒博远科技股份有限公司
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AI Technical Summary

Problems solved by technology

As the degree of alloying of the turbine disk continues to increase, severe segregation deteriorates the hot workability, lowers the low cycle fatigue performance, and easily expands fatigue cracks

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A superalloy material for an engine turbine, the composition of the superalloy material includes by weight percentage: C: 0.265%, Mn: 2.18%, Si: 0.54%, Cr: 18.7%, Mo: 9.3%, W: 3.68 %, Al: 0.28%, Cu: 0.21%, Fe: 6.5%, B: 1.05%, Co: 6.81%, Zr: 0.16%, Nb: 1.21%, Y2Ti2O7 nanoparticles: 1.35%, the balance is Ni and not Impurities to be avoided, the manufacturing method of the superalloy material for the engine turbine, comprises the following steps:

[0026] (1) Raw material preparation: by calculation, the alloy components other than the composite oxide Y-Ti-O nanoparticles in the above-mentioned ODS superalloy material added with composite oxide nanoparticles are batched;

[0027](2) Smelting electrode rods, smelting the raw materials to control the vacuum degree of 0.1Pa, keep the melting power unchanged for 37 minutes after all the raw materials are melted; increase the vacuum degree to 0.008Pa, refine at 1635°C for 12 minutes, adjust the composition to meet the requirem...

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Abstract

The invention relates to an ODS (oxide dispersion strengthened) high-temperature alloy material for an engine turbine. The high-temperature alloy material comprises the following components in percentage by weight: 0.22-0.28% of C, 2.1-2.2% of Mn, 0.45-0.61% of Si, 18.3-19.2% of Cr, 8.25-10.4% of Mo, 3.50-3.80% of W, 0.05-0.35% of Al, 0.18-0.27% of Cu, 5.0-9.2% of Fe, 1.0-1.1% of B, 6.7-8.2% of Co, 0.12-0.18% of Zr, 1.12-1.38% of Nb, 1.2-2.8% of composite oxide Y-Ti-O nanoparticles and the balance of Ni and inevitable impurities. The invention further provides a preparation method of the material. A prepared blank has the characteristics of reasonable composition design, reasonable hot-working process, convenience for production organization, strong production operability and strong equipment universality, a produced high-temperature alloy large turbine disk product is high in quality, the structure properties meet standard requirements, the production efficiency is high, and the economic and social benefits are remarkable.

Description

Technical field [0001] The present invention is a high -temperature alloy field. It is specifically a high -temperature alloy and its preparation method. It is mainly suitable for ODS high -temperature alloy materials and preparation methods for engine turbine to add composite oxide nanoparticles. Background technique [0002] High -temperature alloys refer to a type of metal material developed by iron, drilling, and nickel -based to serve at high temperatures above 600 ° C.High -temperature alloy is a single Austeenite tissue, which has high high temperature strength, antioxidant and corrosion resistance, good tissue stability and use of reliability, also known as thermal alloy and heat stability high -temperature alloy. Foreign abroad is often abroad.It is called SuperLOY. [0003] High -temperature alloys can have different classification methods according to different alloy composition, organization and molding process.According to the matrix elements, there are mainly nickel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C19/05C22C30/02C22C1/05C22C1/02C22F1/10C22F1/18
Inventor 邢桂生
Owner 北京金恒博远科技股份有限公司
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