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A kind of co-v-based superalloy containing high temperature ordered γ` strengthening phase and preparation method thereof

A high-temperature alloy and strengthening phase technology, which is applied in the field of Co-V-based superalloy and its preparation, can solve the problems that there are no research reports on high-temperature alloys, and it is not conducive to the stability of γ' strengthening phase, so as to achieve excellent temperature bearing capacity and excellent performance Effect

Active Publication Date: 2017-12-22
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

More metal chromium is added in this patent, which is not conducive to the stability of the γ' strengthening phase
[0008] It should be pointed out that so far, there are no relevant research reports on Co-V-based superalloys.

Method used

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  • A kind of co-v-based superalloy containing high temperature ordered γ` strengthening phase and preparation method thereof
  • A kind of co-v-based superalloy containing high temperature ordered γ` strengthening phase and preparation method thereof
  • A kind of co-v-based superalloy containing high temperature ordered γ` strengthening phase and preparation method thereof

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Experimental program
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Effect test

specific Embodiment 1

[0039] The proportion of Co is 78%, V is 16%, and Ta is 6% alloy 1; the material with good proportion is placed in the arc melting furnace, and the vacuum is evacuated to 6.6×10 -3 Below Pa, after filling the furnace with argon gas to -0.07MPa, the melting current is 450A, and the melting is more than 4 times, so that the raw materials are melted evenly; in the argon atmosphere, the above casting materials are placed at 1100 ℃ for homogenization treatment for 24 hours ; followed by aging at 800 ° C for 48 hours, quenching and cooling in ice water, and obtaining a Co-V-based superalloy containing a high-temperature ordered γ' strengthening phase.

specific Embodiment 2

[0040] The proportion of Co is 78%, V is 16%, Ta is 3%, and Ti is 3% alloy 2; the material with good proportion is placed in the arc melting furnace, and the vacuum is pumped to 6.6×10 -3 Below Pa, after filling the furnace with argon gas to -0.07MPa, the melting current is 450A, and the melting is more than 4 times, so that the raw materials are melted evenly; in the argon atmosphere, the above casting materials are placed at 1100 ℃ for homogenization treatment for 24 hours ; followed by aging at 800 ° C for 48 hours, quenching and cooling in ice water, and obtaining a Co-based superalloy containing a high-temperature ordered γ' strengthening phase.

specific Embodiment 3

[0041] Alloy 3 with a ratio of Co of 78%, V of 16%, Ta of 3%, and Al of 3%; the materials with a good ratio are placed in an electric arc melting furnace, and the vacuum is evacuated to 6.6×10 -3 Below Pa, after filling the furnace with argon gas to -0.07MPa, the melting current is 450A, and the melting is more than 4 times, so that the raw materials are melted evenly; in the argon atmosphere, the above casting materials are placed at 1100 ℃ for homogenization treatment for 24 hours ; followed by aging at 800 ° C for 48 hours, quenching and cooling in ice water, and obtaining a Co-based superalloy containing a high-temperature ordered γ' strengthening phase.

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Abstract

The invention discloses a Co-V-based superalloy containing a high-temperature ordered γ' strengthening phase and a preparation method thereof. The high-temperature alloy is mainly composed of uniformly distributed cubic ordered γ' and matrix γ, and has excellent high-temperature mechanical properties. The composition of the alloy is as follows: Co is 67.8-94%, V is 5-26%, X is 1~6%, X is composed of one or more of Ta, Ti, Nb, Al, Ni, Mo, W, Cr, Re, Ir and Ru, Y is 0~0.2%, Y is C , B and Mg in one or more than two kinds of composition. The invention mainly takes coherent strengthening as the mechanism, has high strength under high temperature conditions, and is expected to be used as a high temperature component in the fields of aviation, aerospace, ships and the like, thus having great development prospects.

Description

technical field [0001] The invention relates to a Co-V-based superalloy with high (Co, V) content, mainly having typical γ + γ' two-phase structure morphology, and excellent high-temperature mechanical properties and a preparation method thereof. Background technique [0002] Superalloys are widely used in the fields of aviation, aerospace, ships and energy power, especially high-temperature parts of engines, such as fuel injectors, combustion chambers and turbine blades. Superalloys can be prepared by various processes such as conventional casting and directional solidification. Some conventional cast materials are processed by rolling, forging and extrusion; some are further heat treated by solution treatment and aging treatment after casting; some superalloys are also attached with environmental protection coatings. Co-based superalloys and Ni-based superalloys are two types of superalloys known at present. Co-based superalloys have excellent thermal corrosion resistanc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C19/07C22F1/10
Inventor 刘兴军阮晶晶王翠萍施展杨水源张锦彬黄艺雄
Owner XIAMEN UNIV