Preparation method for obtaining micro-nano dual-scale Ti2AlNb alloy

A dual-scale, micro-nano technology, applied in the direction of metal processing equipment, improvement of process efficiency, improvement of energy efficiency, etc., can solve problems such as coarse grains, and achieve the effects of fine grains, high strength and plasticity, and excellent performance

Pending Publication Date: 2022-08-05
刘杰
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Problems solved by technology

[0005] The object of the present invention is to provide a method to obtain micro-nano double-scale Ti 2 The preparation method of AlNb alloy is to solve the problem of coarse grains in the process of smelting and casting proposed in the above background technology, and the problem of grain size control, so that the alloy has higher strength and plasticity, and a double-scale with more excellent performance is prepared. Ti 2 AlNb Alloy Problems

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  • Preparation method for obtaining micro-nano dual-scale Ti2AlNb alloy
  • Preparation method for obtaining micro-nano dual-scale Ti2AlNb alloy
  • Preparation method for obtaining micro-nano dual-scale Ti2AlNb alloy

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[0037] The technical solutions in the embodiments of the present invention will be described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0038] see Figure 1-3 , the present invention provides a technical solution: a method for obtaining micro-nano dual-scale Ti 2 The preparation method of AlNb alloy comprises the following steps,

[0039] S1: Raw material selection stage:

[0040] S11: Determine Ti 2 The nominal composition of AlNb-based alloy is Ti-22Al-24Nb, and its chemical composition mass percentage is: Al: 10.6%, Nb: 41.2%, Mo: 0.88%, Fe: 0.047%, Si: 0.07%, Cu: <0.01% , Ni:<0.01, the remainder is Ti;

[0041] S12: According to the determined ...

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Abstract

The invention discloses a preparation method for obtaining a micro-nano dual-scale Ti2AlNb alloy, which comprises the following steps: S1, a cogging and forging stage: S11, connecting a power supply of a forging mechanism with an external power supply, setting various values of cogging and forging through a computer program, and controlling and starting the forging mechanism through the computer program after setting; according to the preparation method for obtaining the micro-nano dual-scale Ti2AlNb alloy, the improved preparation method for the Ti2AlNb alloy adopts a plastic deformation method to introduce relatively large deformation in the deformation process, so that coarse grains of a Ti2AlNb-based alloy blank are refined, a rod-shaped sample with a certain specification is obtained, and the micro-nano dual-scale Ti2AlNb alloy is obtained. Then a proper heat treatment process is adopted to further precisely regulate and control the microscopic structure of the alloy, so that the micro-nano dual-scale Ti2AlNb alloy is prepared, the problem of coarse grains in the smelting and casting process is solved, the problem of grain size control is solved, the alloy has higher strength and plasticity, and the service life of the alloy is prolonged. And the double-scale Ti2AlNb alloy with more excellent performance is prepared.

Description

technical field [0001] The present invention relates to Ti 2 The technical field of AlNb alloy preparation, specifically a method for obtaining micro-nano double-scale Ti 2 Preparation method of AlNb alloy. Background technique [0002] Intermetallic compounds Ti based on ordered orthorhombic O phase 2 AlNb-based alloys are listed as one of the new lightweight high-temperature structural materials preferred for aero-engines due to their excellent comprehensive properties. With the rapid development of the aerospace industry, the 2 The performance of AlNb-based alloys puts forward higher requirements. Ti 2 AlNb-based alloy is a multi-phase composition structure, and its phase transformation process is very complex. By effectively improving and optimizing Ti 2 The preparation process of AlNb-based alloys achieves precise control of its microstructure (phase composition, scale, morphology and distribution), which has been regarded by most researchers as an effective way t...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C14/00C22F1/18B21J5/00
CPCC22C14/00C22F1/183B21J5/002Y02P10/25
Inventor 刘杰王克鲁鲁世强李鑫张开铭高鑫邱仟王俊黄文杰曾权
Owner 刘杰
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